AI diagram agent
Turn text, images and PDFs into editable diagrams, then refine them through chat.
About AI diagram agent
AI diagram agent is a chat-based diagram generator that turns a written description, an image or a PDF into an editable diagram, then keeps the conversation open beside the result so you can ask for changes while you review it. You might describe a three-step publishing process and get a flowchart, then ask in a follow-up message to add an approval decision and a revision loop, and the same diagram is revised rather than redrawn from scratch. It covers the diagrams people most often need to explain work: flowcharts, swimlanes, org charts, process maps, timelines, Gantt charts, architecture diagrams, data flow diagrams, ER diagrams and sequence diagrams. The problem it addresses is the gap between knowing how a process or system works and getting it into a clear picture: drawing boxes and arrows by hand in a diagram editor is slow, and a one-shot text-to-diagram prompt rarely gets the structure right the first time, which is why the conversation and the version history matter here.
What sets it apart from a plain text-to-diagram converter is that the workspace remembers. Projects group related conversations, files and diagrams, saved brand palettes keep colors consistent, and an optional memory carries preferences into later work, with every remembered item open to review, correction or deletion. Each AI revision is saved as a new version you can compare and return to, and supported elements can be edited directly without spending AI credits. You can try one diagram as a guest without signing up, and a free account receives a one-time gift of 100 signup credits. The service is operated by Terence XU, an individual based in China, according to its about page and terms, and it states that it is an independent service and not an official OpenAI product. Its privacy policy says requests are sent through APIMart, an AI gateway, to configured OpenAI models, that generated drafts may be sent back as images for automated layout review, and that the operator does not train its own general-purpose models on private conversations or files.
You start by describing what you want to diagram in the chat box on the homepage: a process, a system, a team or an idea. Guests can try one diagram from text or a single image without an account or a credit card, though guest work is temporary until you sign in to keep it. Signed-in users can also attach source material: a screenshot or photo to recreate as an editable diagram, a PDF with a selected page range describing a process or system, or an editable Mermaid, draw.io or Excalidraw source file, which carries more structure than a screenshot.
The agent organises the information into a diagram, asks for missing details when it needs them, and can produce several views from one brief, for example a system overview, a login sequence and a data flow in a single request. You then keep talking: ask it to add a decision, change a layout, rename a step or apply a brand palette, and each AI revision becomes a new saved version. For smaller fixes you select a supported element and change its text, color or position directly, which uses no credits.
When the diagram is right, registered users can export PNG, SVG, PDF and HTML, or create a read-only sharing link that can be revoked later. Saved work is private by default and nothing is published automatically. Viewing saved results, manual edits, exports and sharing use no AI credits; AI chat, generation and revisions use credits according to the task, so a diagram is not a fixed-price unit. The site recommends checking important labels, arrow directions and relationships before relying on a result, and notes that redrawing a screenshot interprets its structure rather than matching it pixel for pixel.
- •Chat-based generation and refinement - Describe a process or system in plain language and get an editable diagram, then refine it in the same conversation. Follow-up requests revise the existing diagram, so you can build up a flowchart step by step, add branches and loops, or ask for revisions that affect several related diagrams at once.
- •Ten diagram types - Flowcharts for decisions, swimlanes for responsibility and handoffs, org charts for reporting lines, process maps from inputs to deliverables, timelines and Gantt charts for schedules, architecture diagrams for system boundaries and dependencies, data flow diagrams for information movement, ER diagrams for entities, attributes and cardinality, and sequence diagrams for ordered messages and alternate responses.
- •Image, PDF and source-file inputs - Image to diagram recreates a screenshot or photo as an editable diagram with its labels and order preserved where readable. PDF to diagram turns a selected process or system description in a document into one or more diagrams. Mermaid, draw.io and Excalidraw files can be imported as source material, though the site notes that import support does not imply export support for the same format.
- •Version history and direct edits - Every AI revision is kept as a new version, so you can compare versions and continue from the one that fits. Supported labels, colors and positions can be changed by hand without using AI credits.
- •Projects, brand colors and memory - Personal Projects keep related conversations, files and diagrams together. Brand colors store named palettes with a default, so diagrams match a visual identity on request. Account and project memory remember drawing preferences, and you can review, correct or exclude what is remembered.
- •Export and sharing - Export to PNG, SVG, PDF or HTML on any registered account, including the free plan, or share a selected version through a read-only link you can revoke. PowerPoint, draw.io and Mermaid source exports are not included.
AI diagram agent is aimed at people who need to explain work visually but do not want to draw it box by box. Product teams can map how a feature moves from intake to a launch decision, or pair an approval flow with a milestone timeline. Software engineers and architects can produce a system overview, trace one request in a sequence diagram, follow information in a data flow diagram and model storage relationships in an ER diagram, then review every connection against the real design.
Operations teams can map a process such as purchasing across requester, manager and finance in swimlanes, with a clear owner for every return path, or turn a reporting structure into an org chart. Anyone who receives a process as a PDF, a screenshot or a photo can turn it into an editable diagram instead of redrawing it by hand. Teams that already keep diagrams as Mermaid, draw.io or Excalidraw files can bring them in as a starting point for revision.
The guest diagram and the 100 signup credits are enough to judge whether the output fits your work, and a one-time credit pack is available without a subscription for occasional use. Regular users who generate and revise diagrams often are the audience for the monthly Starter and PRO plans, which add monthly credits, more storage, larger files and more document pages per message.
It is less suited to anyone who needs exports to PowerPoint, draw.io or Mermaid source, or pixel-exact copies of an existing image. As the site itself warns, AI can misread a source or omit a relationship, so results for important work need a human review.
Pricing
$19.90 - $39.90/mo
- Starter$19.90/mo
- PRO$39.90/mo
- Credit pack$14.90 once
From the vendor pricing page, 2026-10-15
