Lucid Train compared with Miro.
Miro is a meeting tool that can hold a diagram. This is a diagram tool that generates from your code.
Lucid Train generates technical architecture diagrams by reading your codebase and computing the layout, and runs locally so source code stays on your machine. Miro is a collaborative whiteboard built for workshops and planning, where architecture diagrams are drawn by hand from someone's understanding of the system. Lucid Train is the better tool when the diagram must match a real codebase; Miro is the better tool when the point is the conversation.
Generated from code, not drawn from memory
An architecture diagram on a Miro board is as accurate as the understanding of whoever drew it and as current as the last time someone opened the board. Lucid Train reads the repository, so the diagram reflects what is actually deployed, and regenerating after a change costs a command rather than an afternoon. That is a different relationship between the picture and the system.
Precision the free-form canvas cannot enforce
Tier bands, typed components, solved orthogonal routing, real service icons and failure marking are all structural. On an infinite canvas nothing enforces alignment or consistency, and the tidying is manual forever. The constraint is what makes the output legible without anyone maintaining it.
Your code stays on your machine
Lucid Train is a desktop application that runs against local models with no telemetry. Miro is a hosted collaborative product by design. For diagramming a codebase under any confidentiality constraint, that is the deciding difference.
What Miro is good at
Everything involving other people in a room: workshops, retrospectives, planning, sticky notes, voting, an infinite canvas several people navigate at once. Its template library is enormous and the collaboration is genuinely good. Nothing here replaces that.
Side by side
| Lucid Train | Miro | |
|---|---|---|
| Generates from a repository | Yes | No |
| Layout | Computed | Manual, free-form |
| Technical diagram structure | Tiers, typed nodes, failure marking | Free-form shapes |
| Diagram to code as a specification | Yes | No |
| Runs fully offline | Yes, with local models | Limited |
| Code stays local | Yes | No, hosted |
| Export | SVG, 2x PNG, Markdown, .excalidraw | PDF, image, board formats |
| Real-time collaboration | No | Yes |
| Workshop facilities | No | Extensive |
| Price | CLI free and open source; desktop $3/month, 7-day trial, no card | Free tier, then per seat |
Questions
Can Lucid Train diagrams go into Miro?
As exported images, yes. There is no live sync, so the copy on the board is a snapshot.
Is Miro good for architecture diagrams?
It is capable and not specialised. Diagrams there drift from the system because keeping them accurate is manual work nobody is assigned.
Which for a design review?
Generate the diagram with Lucid Train so it reflects the code, then present it wherever the review happens. The generated artifact is the part worth automating.
Affiliation
Lucid Train is an independent product and is not affiliated with, endorsed by, or connected to the product described on this page. All names and trademarks belong to their respective owners. Pricing and features were checked on 19 August 2026 and change without notice; check the vendor's own site before deciding.
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