Best software · AI tools
10 Best AI Diagram Generators of 2026
This list is for software engineers, architects and product teams who want to describe a system, a process or a user flow in plain text and get back a diagram they can edit, share and keep up to date. It covers engineering-first diagram tools, collaborative whiteboards with AI generation, text-to-diagram code editors and visual tools for documents. We compared documented features and published prices; scores weigh features at 40 percent and ease of use and value at 30 percent each.
By the Mojolin research desk · Updated November 12, 2026 · 10 tools compared · Prices checked on vendor pages, latest November 12, 2026
Questions or corrections: editorial@mojolin.com
Mojolin is self-funded How we score
Eraser is our top pick for engineering teams: it generates cloud architecture, sequence and database diagrams from a prompt or pasted code, keeps every result editable as diagram-as-code, and its paid plans connect to Git repos and live data sources. Miro is the better choice when product managers, designers and engineers plan together on one board, since its AI can turn sticky notes already on the canvas into a flowchart or ER diagram. Whimsical is the fastest way to draft user flows and wireframes, and Mermaid Chart suits developers who want diagrams that live as Mermaid code in GitHub, VS Code and Confluence.
Top picks
Comparison table
| # | Tool | Pricing | Score | |
|---|---|---|---|---|
| 1 |  Eraser | Engineering teams documenting system architecture | Free plan with 3 files and 3 AI credits; Business $45 per member per month billed annually or $60 monthly; Business Plus $42 per member per month with a 10-seat minimum | 8.8 |
| 2 |  Miro | Cross-functional product teams planning on one board | Free plan with 3 editable boards; Starter $8 per member per month billed yearly with 25 AI credits; Business $20 per member per month billed yearly with 50 AI credits | 8.7 |
| 3 |  Whimsical | Product designers and PMs drafting user flows | Free plan with 50 board objects per month; Pro $10 per editor per month billed annually; Business $20 per editor per month; extra AI credits $0.10 each | 8.6 |
| 4 |  Mermaid Chart | Developers who keep diagrams as Mermaid code | Basic plan free with 3 diagrams and 15 AI credits; Plus $10 per user per month billed annually with 300 AI credits per year; Premium $20 per user per month billed annually; annual billing only | 8.5 |
| 5 |  Lucidchart | Enterprises standardizing process and IT documentation | Free plan available; Individual, Team and Enterprise paid plans (see vendor pricing, USD check pending) | 8.4 |
| 6 |  Excalidraw+ | Developers who like hand-drawn style sketches | Free editor with 10 AI requests a day; Plus $6 per user per month billed annually or $7 monthly, with a 14-day free trial | 8.3 |
| 7 |  draw.io | Teams that want free diagrams generated by their AI assistant | Free forever with no sign-up; no paid plan | 8.2 |
| 8 |  Napkin AI | Product and marketing teams illustrating docs and decks | Free plan with 500 AI credits per week; Plus $9 per person per month billed yearly or $12 monthly; Pro $22 per person per month billed yearly | 8.0 |
| 9 |  Gliffy | Teams that document everything in Confluence | Gliffy Diagrams for Confluence free for up to 10 users; $3.80 per user per month billed annually for 11 to 100 users | 7.9 |
| 10 |  Creately | Operations teams mapping processes and org structures | Free plan with up to 45 shapes per diagram; Pro, Business and Enterprise paid plans (see vendor pricing, USD check pending) | 7.7 |
Scoring weights
Every tool gets three editorial scores out of 10, from vendor documentation, product pages and the published price. The overall score is the weighted average below, the same method on every list. Full method
The full ranking
Rank 1 · Best overall
Eraser
A technical design tool that generates architecture, sequence and database diagrams plus design docs from prompts or code.
eraser.io8.8
out of 10
Best for: Engineering teams documenting system architecture
Eraser is built for the planning phase of software work. You describe a system or paste code and Eraser AI creates a cloud architecture diagram, database diagram or sequence diagram on an infinite canvas next to a notes editor for the design doc. What sets it apart for engineers is the editing model: every generated diagram can be changed with another prompt, through the underlying diagram-as-code, or by hand, so a wrong arrow takes seconds to fix.
Paid plans go further than one-off prompts. Business adds 100 AI credits per member each month, unlimited files, private files and one Git repo plus one data source, and Eraserbot keeps codebase diagrams current as the code changes. Integrations cover Confluence, Notion, VS Code and GitHub, and an MCP server lets Claude or Cursor drive it. The catch is cost: $45 per member per month billed annually is the highest entry price here, and the free plan's 3 AI credits only allow a quick trial.
Standout feature
Eraser is the best choice for engineers because each AI diagram can be edited by prompt, by diagram-as-code or on the canvas.
Use cases
Platform engineers
Paste Terraform or service code and generate a cloud architecture diagram
Outcome: An editable diagram with tech icons for the design doc
Tech leads
Draft a sequence diagram for a new API flow
Outcome: A diagram the team reviews and edits as code
Engineering managers
Keep onboarding docs current with Eraserbot codebase diagrams
Outcome: Diagrams that update as the codebase changes
Key features
- AI diagrams from a prompt or pasted code, edited by prompt, diagram-as-code or the canvas
- 3,000+ tech icons for cloud architecture diagrams
- Git repos and data sources on paid plans: 1 each on Business, 3 each on Business Plus
- Eraserbot codebase diagrams that update themselves
- Integrations with Confluence, Notion, VS Code and GitHub, plus an MCP server and diagramming API
Pros
- Every AI diagram stays editable as diagram-as-code, so fixes are quick and reviewable
- Unlimited free guests on every plan
- Eraser states it never uses user data to train models
Cons
- Free plan is capped at 3 files and 3 AI credits
- Business costs $45 per member per month even on annual billing
- SAML SSO starts on Business Plus, which needs at least 10 seats
Rank 2 · Runner-up
Miro
A collaborative canvas whose AI turns prompts or existing board content into flowcharts, ER diagrams and UML diagrams.
miro.com8.7
out of 10
Best for: Cross-functional product teams planning on one board
Miro is the strongest pick when a diagram is one step in a larger team conversation. You select Diagram in Miro AI, pick a mind map, flowchart, ER diagram, UML class diagram or UML sequence diagram, and describe it; the result appears on a shared board where engineers, designers and product managers can comment and iterate together. Its most useful trick is Create with AI, which treats sticky notes, requirements and reference material already on the board as the prompt, so a messy workshop can become a structured flow.
Starter costs $8 per member per month billed yearly and includes 25 AI credits per member each month, which Miro estimates at about 5 diagrams. Business at $20 doubles that to 50 credits and raises MCP calls to 2,000 per day, so Claude or Cursor can read and write boards. Engineers who want diagrams as code will find Miro less precise than Eraser or Mermaid Chart, but for shared planning it is hard to beat.
Standout feature
Miro is the best choice for mixed teams because Create with AI turns existing board content into a structured diagram.
Use cases
Product managers
Turn workshop sticky notes into a process flowchart
Outcome: A structured flow the whole team can edit
Backend engineers
Generate an ER diagram from a text description of the data model
Outcome: A schema sketch for stakeholder review
Design leads
Map a signup flow and its system steps on one board
Outcome: Shared context before implementation starts
Key features
- AI diagram generation for mind maps, flowcharts, ER diagrams and UML class and sequence diagrams
- Create with AI uses sticky notes and content already on the board as the prompt
- 25 AI credits per member per month on Starter and 50 on Business
- MCP server for Claude, Cursor and Copilot: 500 calls per day on Starter, 2,000 on Business
- 250+ integrations and 7,000+ templates
Pros
- Generated diagrams land on a shared board for comments and live editing
- Starter is $8 per member per month billed yearly
- Free plan includes AI diagram generation
Cons
- Free plan keeps only the 3 most recent boards editable
- Starter's 25 credits equal about 5 diagrams a month by Miro's own estimate
- Diagram-as-code editing is limited compared with engineering-first tools
Rank 3 · Also great
Whimsical
A visual workspace for flowcharts, wireframes, mind maps and docs, with an AI agent that drafts them from a prompt.
whimsical.com8.6
out of 10
Best for: Product designers and PMs drafting user flows
Whimsical is the quickest tool here for drafting product flows. You describe a process and Whimsical Agent, which the company says is powered by Claude, draws the steps, decisions and connectors as a normal Whimsical flowchart. The same agent builds mind maps and wireframes, so a PM can go from a feature idea to a user flow and rough screens in one workspace. Its MCP server also lets ChatGPT, Claude or Cursor create flowcharts directly in your Whimsical workspace.
Pricing is simple: Pro is $10 per editor per month billed annually with unlimited board objects and 90-day version history, and viewers and guests are always free. The weak spot is AI allowance. Every account gets 10 one-time AI credits and further credits cost $0.10 each, so teams that generate many diagrams should budget for top-ups. Whimsical also has no diagram-as-code editor or architecture icon set, which makes it a better fit for user flows than for cloud diagrams.
Standout feature
Whimsical is the best choice for product flows because its agent drafts flowcharts, wireframes and mind maps from one prompt.
Use cases
Product managers
Describe a signup flow and generate the flowchart
Outcome: An editable user flow in under a minute
UX designers
Turn a feature brief into wireframes and a wireflow
Outcome: Rough screens linked to the flow for review
Engineers using Cursor
Ask the assistant to map a sequence through the MCP server
Outcome: A diagram saved straight to the team workspace
Key features
- Whimsical Agent, powered by Claude, drafts flowcharts, user flows, process diagrams and sequence diagrams
- AI mind maps and AI wireframes from a text prompt
- MCP server lets ChatGPT, Claude, Cursor and other tools create flowcharts in your workspace
- Unlimited board objects, 90-day version history and no export watermark on Pro
- Slack and GitHub integrations and a desktop app for macOS and Windows
Pros
- Viewers and guests are free and unlimited on every plan
- Pro is $10 per editor per month on annual billing
- AI output is a regular Whimsical flowchart you can restyle or ask the agent to change
Cons
- Every account gets only 10 one-time AI credits; more cost $0.10 each
- Free plan caps creation at 50 board objects per month and watermarks exports
- SAML SSO and SCIM require the $20 Business plan
Rank 4
Mermaid Chart
The commercial editor from the makers of Mermaid, combining Mermaid syntax, a visual canvas and Mermaid AI.
mermaidchart.com8.5
out of 10
Best for: Developers who keep diagrams as Mermaid code
Mermaid Chart is the natural pick if your team already writes Mermaid in Markdown files, READMEs or wiki pages. Mermaid AI turns a description, an uploaded document or a meeting transcript into a diagram and keeps context across the conversation, so you can refine it with follow-up prompts. Because the result is plain Mermaid code, it renders anywhere Mermaid does, and the editor links each node on the canvas to its line of code.
The tool fits engineering workflows: an MCP server lets Claude, VS Code and Cursor generate, validate and render diagrams, and it also works inside GitHub Copilot and Confluence. Plus costs $10 per user per month and Premium $20, both billed annually with no monthly option. The main limit is AI volume, since Plus includes 300 AI credits per year and the free Basic plan only 15, plus a cap of 3 diagrams. For diagrams that live next to code, it is the most portable option on this list.
Standout feature
Mermaid Chart is the best choice for code-first teams because Mermaid AI writes standard Mermaid syntax you can commit.
Use cases
Backend developers
Generate a sequence diagram and commit the Mermaid code to the repo
Outcome: A diagram that renders in GitHub and stays versioned
Tech writers
Upload a design doc and generate a flowchart for Confluence
Outcome: A diagram embedded in the wiki page
Engineers in VS Code
Ask an assistant to draw an ER diagram through the MCP server
Outcome: A validated diagram without hand-writing syntax
Key features
- Mermaid AI builds diagrams from a description, an uploaded doc or a pasted transcript
- Code panel and canvas stay linked: click a node to jump to its Mermaid code
- MCP server to generate, validate and render diagrams from Claude, VS Code and Cursor
- Works inside GitHub Copilot and Confluence, with a VS Code integration
- Flowchart, sequence, ER, class, state, Gantt, block and Git graph diagram types
Pros
- Output is standard Mermaid syntax that renders in many docs and code tools
- Plus is $10 per user per month billed annually
- Free trials of Plus and Premium are offered
Cons
- Annual billing only; no monthly plans
- Plus includes 300 AI credits per year, not per month
- Basic is limited to 3 diagrams with a size limit of 60
Rank 5
Lucidchart
An established diagramming app whose Lucid AI generates diagrams, process maps and documentation from prompts and screen recordings.
lucid.co8.4
out of 10
Best for: Enterprises standardizing process and IT documentation
Lucidchart brings AI to a diagramming tool that many large companies already standardize on. Lucid AI generates diagrams from text prompts and lets you iterate on them, but its most distinctive feature is Process Capture: you record your screen while doing a task and the Process Agent produces an editable process diagram and a written SOP. The Process Agent can also interview you about triggers, owners and steps to fill gaps.
For engineering teams, the Lucid MCP server lets AI tools find, create and edit diagrams, and the separate Cloud Accelerator add-on targets cloud infrastructure planning. Lucid uses Azure OpenAI Service and AWS Bedrock models and says customer data is not used to train third-party models, and Team and Enterprise admins can switch AI on or off. Lucid says AI is available to all users today but may become a paid feature, and its pricing page did not show US prices from our location, so confirm the cost before rolling it out.
Standout feature
Lucidchart is the best choice for process documentation because Process Capture turns a screen recording into a diagram and SOP.
Use cases
IT operations teams
Record a provisioning task with Process Capture
Outcome: An editable process diagram and written SOP
Solutions architects
Generate a first diagram from a prompt, then refine it on the canvas
Outcome: A diagram in the company's standard tool
AI engineers
Compare prompts and models with AI Prompt Flow
Outcome: A visual record of LLM experiments
Key features
- Lucid AI generates diagrams from text prompts and iterates on them on the canvas
- Process Capture records your screen and the Process Agent builds an editable process diagram and SOP
- Lucid MCP server to find, create, edit and share diagrams from AI tools
- AI Prompt Flow for testing LLM prompts and models visually on the canvas
- AI-backed integrations with ChatGPT, Microsoft Copilot, Microsoft Graph Connector and Slack
Pros
- Lucid says its AI capabilities are currently available to all users
- Admins on Team and Enterprise can control who has AI access
- Lucid states customer data is not used to train third-party AI models
Cons
- Lucid notes AI may move to a paid subscription model in the future
- Cloud Accelerator for infrastructure diagrams is a separate add-on
- US prices did not load from our location, so the starting price is unconfirmed
Rank 6
Excalidraw+
The hosted, team version of the open-source Excalidraw whiteboard, with text-to-diagram AI, an MCP server and an API.
excalidraw.com8.3
out of 10
Best for: Developers who like hand-drawn style sketches
Excalidraw+ is the paid, cloud-saved version of the open-source Excalidraw whiteboard, and its AI features are aimed squarely at developers. Text to diagram turns a description into native shapes, wireframe to code turns a sketch into a working page, and pasting Mermaid code converts it to editable shapes without using AI at all. The MCP server and REST API, both in public beta, let Claude, Codex, Cursor or OpenCode draw on the canvas from your working context, such as a repository.
Plus costs $6 per user per month billed annually or $7 monthly and lifts AI to 100 requests a day, or admins can plug in their own OpenAI, Anthropic, Gemini, Grok or OpenRouter key and drop the Excalidraw limit. The free editor stays useful for quick sketches with 10 AI requests a day. The hand-drawn look is great for whiteboard sessions and explainers but less suited to formal architecture records.
Standout feature
Excalidraw+ is the best choice for budget-minded developers because Plus includes 100 AI requests a day for $6 per user per month.
Use cases
Developers
Ask a coding agent to draw a repo's architecture through the MCP server
Outcome: A whiteboard diagram to explain the codebase
Tech leads
Paste an existing Mermaid diagram and restyle it for a talk
Outcome: Editable hand-drawn shapes for slides
Frontend engineers
Sketch a screen and use wireframe to code
Outcome: A starting page to build from
Key features
- Text to diagram and wireframe to code with 10 AI requests a day free and 100 on Plus
- Bring your own key from OpenAI, Anthropic, Gemini, Grok or OpenRouter with no Excalidraw limit
- MCP server and REST API in public beta for Claude, Codex, Cursor and OpenCode
- Mermaid to Excalidraw conversion with no AI and no request limit
- PDF and PPTX export of frames and live presentations on Plus
Pros
- Free editor is open source and stores scenes end-to-end encrypted in the browser
- Plus is $6 per user per month billed annually
- Admins choose the AI model and whether personal keys are allowed
Cons
- Free editor holds 1 scene and caps AI at 10 requests a day
- MCP and REST API are still in public beta
- Hand-drawn style may not suit formal architecture documentation
Rank 7
draw.io
A free, open-source diagram editor that AI assistants such as Claude, ChatGPT, Copilot and Cursor can drive through its MCP server.
drawio.com8.2
out of 10
Best for: Teams that want free diagrams generated by their AI assistant
draw.io takes a different route to AI diagrams: instead of its own prompt box, it gives your existing assistant a way to draw. Connect the hosted MCP App Server at mcp.draw.io to Claude, ChatGPT, GitHub Copilot in VS Code or Cursor, describe the diagram, and it appears in the chat with an Open in draw.io button for editing. For terminal workflows, plugins for Claude Code, Codex and Copilot CLI write .drawio files into your project and can export PNG, SVG or PDF when draw.io Desktop is installed.
The editor itself is free forever, needs no sign-up, and its source is Apache 2.0 licensed. It integrates with Google Drive, SharePoint, OneDrive, Teams, Confluence, Jira, GitHub, VS Code and Notion, and you choose where files are stored. The trade-off is that the AI quality depends on the assistant you bring, and there is no vendor-managed AI allowance. For teams already paying for an AI assistant, it is the cheapest way to get editable architecture diagrams.
Standout feature
draw.io is the best choice for teams on no budget because the editor is free forever and works with Claude, ChatGPT, Copilot and Cursor.
Use cases
Engineers using Claude Code
Generate a .drawio architecture file inside the repo
Outcome: A versioned diagram exported to SVG
Confluence teams
Ask ChatGPT for a flowchart and open it in draw.io
Outcome: An editable diagram at no extra cost
Security-conscious teams
Keep diagrams in their own Google Drive or SharePoint
Outcome: No diagram data stored by the vendor
Key features
- Hosted MCP App Server at mcp.draw.io for Claude, ChatGPT, GitHub Copilot and Cursor, with no sign-in
- Plugins for Claude Code, Codex and Copilot CLI that create .drawio files in your project
- Export to PNG, SVG or PDF from the plugin when draw.io Desktop is installed
- Native integrations with Google Drive, Microsoft SharePoint, OneDrive, Teams, Confluence, Jira, GitHub, VS Code and Notion
- Apache 2.0 licensed source code and real-time collaboration
Pros
- Completely free with no paywalls and no account required
- Diagrams are stored where you choose; draw.io says it cannot access your data
- Generated diagrams open in the full draw.io editor for manual changes
Cons
- AI generation runs through an outside assistant, so you need Claude, ChatGPT, Copilot or Cursor
- Exporting from the coding-agent plugin requires draw.io Desktop
- No built-in AI credit allowance or vendor support plan
Rank 8
Napkin AI
A text-to-visual tool that turns documents, notes or a one-line prompt into flowcharts, mind maps, charts and slides.
napkin.ai8.0
out of 10
Best for: Product and marketing teams illustrating docs and decks
Napkin AI is the easiest tool here for turning existing writing into a clean visual. You paste steps, a process document or a single sentence, Napkin finds the order in your content and builds a connected flowchart, and you can switch between horizontal and vertical layouts or restyle it to your brand. It also produces mind maps, timelines, data charts and, in beta, full slide decks, and it imports PPT, DOC, PDF, HTML and Markdown files.
Credits are generous: the free plan refreshes 500 AI credits every week, and Plus at $9 per person per month billed yearly adds 10,000 credits a month, PPT and SVG export and removes Napkin branding. Napkin is SOC 2 Type II compliant and ISO 27001 certified. The limit for engineers is scope, since Napkin is designed for business visuals rather than cloud architecture, ER or UML diagrams, so pair it with a technical tool for system design.
Standout feature
Napkin AI is the best choice for document visuals because its free plan refreshes 500 AI credits every week.
Use cases
Product marketers
Paste a feature explainer and generate a process flowchart
Outcome: A branded visual ready for a blog post or deck
Operations leads
Import an onboarding PDF and map the steps
Outcome: A clear flowchart exported to PowerPoint
Product managers
Turn a PRD summary into a decision flow
Outcome: A visual for stakeholder updates
Key features
- Flowcharts from pasted steps, a process document or a one-line prompt
- File import from PPT, DOC, PDF, HTML and Markdown
- Export as PPT, PDF, PNG or SVG, with PPT and SVG on paid plans
- 10,000 AI credits per month on Plus and 30,000 on Pro, at about 1 credit per word
- Brand Studio for colors and fonts, plus an API for generating visuals at scale
Pros
- Free plan refreshes 500 AI credits every week
- SOC 2 Type II compliant and ISO 27001 certified
- Plus is $9 per person per month on yearly billing
Cons
- Built for document visuals, not for technical architecture or UML diagrams
- Free exports carry Napkin branding
- Self-serve data may be used to improve the AI unless you opt out
Rank 9
Gliffy
A diagramming app for Atlassian Confluence that generates diagrams from prompts in its editor or through a Rovo agent.
gliffy.com7.9
out of 10
Best for: Teams that document everything in Confluence
Gliffy is the simplest way to add AI diagrams to an existing Confluence wiki. In the Gliffy editor you click the AI icon, describe what you want, such as a class diagram for an e-commerce system, and click Create diagram. Gliffy also ships a Gliffy Diagram agent for Atlassian Rovo: ask Rovo to turn a page into a sequence diagram, confirm the proposed structure, and a native Gliffy diagram is attached to the page.
Editing is flexible. You can adjust the generated diagram in Gliffy's Mermaid editor with a live preview, or convert it into a classic Gliffy diagram and drag shapes freely. Pricing is low: the Confluence app is free for up to 10 users and $3.80 per user per month billed annually for 11 to 100 users. The limitation is reach, since Gliffy is built for Confluence and the Rovo route needs Atlassian's AI, so teams outside Atlassian should look elsewhere.
Standout feature
Gliffy is the best choice for Confluence teams because it is free for up to 10 users and attaches AI diagrams to wiki pages.
Use cases
Engineering teams on Confluence
Ask Rovo to turn a design page into a sequence diagram
Outcome: A native diagram attached to the page
IT teams
Generate a class or network diagram in the Gliffy editor
Outcome: Documentation updated without leaving Confluence
Small startups
Use Gliffy on a Confluence site with under 10 users
Outcome: AI diagramming at no cost
Key features
- AI diagram generation in the Gliffy editor, available to all Gliffy for Confluence Cloud users
- Gliffy Diagram agent in Atlassian Rovo turns a Confluence page into a diagram
- Generated diagrams are editable in a Mermaid editor with live preview
- Convert an AI diagram to a classic Gliffy diagram to move shapes freely
- Gliffy Zero Egress option for compliance-focused teams
Pros
- Free for Confluence sites with up to 10 users
- Diagrams attach directly to Confluence pages
- $3.80 per user per month is the lowest paid price on this list
Cons
- Built around Confluence; little reason to use it outside Atlassian
- Rovo generation depends on having Atlassian Rovo
- No published AI credit allowance on the pricing page
Rank 10
Creately
A visual workspace with diagram, process, org chart and cloud mapping products, each with built-in AI tools.
creately.com7.7
out of 10
Best for: Operations teams mapping processes and org structures
Creately has grown from a general diagram tool into a set of visual products, and AI tools are included in all of them on every plan. For process work, Creately Process maps BPMN 2.0 and simple flowcharts with swimlanes, keeps processes in a searchable inventory and uses AI to extract procedures from PDF and Word documents. Creately Atlas builds org charts and can map CSV columns with AI, and Blueprint is announced to scan AWS read-only or import Terraform and CloudFormation for live cloud maps.
The free plan includes an infinite canvas with all diagram types but caps each diagram at 45 shapes. Pro removes that cap and adds PDF, SVG, PNG and JPEG export and one connected data source, while Business adds unlimited data sources, admin roles and an audit log. Its pricing page did not show US prices from our location, and the cloud mapping product was still marked as coming, so engineers focused on architecture should check its status first.
Standout feature
Creately is the best choice for process mapping because its AI extracts procedures from PDF and Word files into BPMN maps.
Use cases
Operations managers
Upload a Word SOP and extract the procedure as a process map
Outcome: A BPMN diagram stored in a searchable inventory
HR teams
Import a CSV and build an org chart with AI column mapping
Outcome: A current org chart with span-of-control views
Business analysts
Draw swimlane flowcharts for a process review
Outcome: Shared diagrams with detailed sharing controls on Pro
Key features
- AI tools included in all Creately products on every plan
- Creately Process maps BPMN 2.0 and flowcharts and extracts procedures from PDF and Word files with AI
- Creately Blueprint, announced as coming, scans AWS read-only or imports Terraform and CloudFormation
- Pro adds unlimited shapes, PDF, SVG, PNG and JPEG export and one connected data source
- Enterprise adds SAML SSO, SCIM, SLAs and data residency
Pros
- Free plan includes AI tools and an infinite canvas with all diagram types
- Process documents in PDF or Word can be turned into maps with AI
- Business plan includes unlimited connected data sources and an audit log
Cons
- Free plan caps diagrams at 45 shapes
- Cloud mapping in Blueprint was still marked as coming
- US prices did not load from our location, so the starting price is unconfirmed
Frequently asked questions
+What is the best AI diagram generator in 2026?
Eraser is the best AI diagram generator for engineers in 2026. It turns a prompt or pasted code into architecture, sequence and database diagrams that stay editable as diagram-as-code, and Business costs $45 per member per month billed annually. Miro is the best alternative for mixed product teams, from $8 per member per month billed yearly.
+Is there a free AI diagram generator?
Yes, draw.io is free forever with no sign-up and works with Claude, ChatGPT, Copilot and Cursor through its MCP server. Excalidraw's free editor allows 10 AI requests a day, and Napkin AI's free plan refreshes 500 AI credits every week.
+Which AI tool can create architecture diagrams from code?
Eraser is the strongest option for generating architecture diagrams from code. You can paste code to create a diagram, paid plans connect Git repos, and Eraserbot keeps codebase diagrams updated as the code changes. Excalidraw+ and draw.io can also draw a repository's structure when driven by a coding agent over MCP.
+Can ChatGPT or Claude make diagrams?
Yes, through MCP servers published by diagram vendors. draw.io's hosted server at mcp.draw.io needs no sign-in, Whimsical's server lets ChatGPT and Claude create flowcharts in your workspace, and Mermaid Chart, Eraser, Excalidraw+, Miro and Lucidchart also offer MCP access.
+What is the cheapest paid AI diagram tool?
Gliffy is the cheapest paid option at $3.80 per user per month billed annually for 11 to 100 Confluence users, and it is free for up to 10 users. Outside Confluence, Excalidraw+ Plus costs $6 per user per month billed annually and Miro Starter $8 per member per month billed yearly.
+Which AI diagram tool works with Mermaid code?
Mermaid Chart is built on Mermaid, and its Mermaid AI outputs standard Mermaid syntax from a prompt, document or transcript. Excalidraw+ converts pasted Mermaid code into editable shapes without AI limits, and Gliffy lets you edit its AI diagrams in a Mermaid editor.
+How many diagrams can I generate per month?
It depends on each tool's AI credits. Eraser Business includes 100 AI credits per member per month, Miro Starter 25 credits per member per month (about 5 diagrams by Miro's estimate), and Excalidraw+ Plus 100 AI requests a day. Mermaid Chart Plus counts credits per year, at 300.
About this list
Updated November 12, 2026 by the Mojolin research desk. Mojolin is self-funded
Questions or corrections: editorial@mojolin.com
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