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Chat interface that turns a description into a Mermaid diagram, sold as credits where one credit is one diagram.
ChartAI describes itself as a chat window for charts and diagrams: you describe what you want in conversation and it renders a Mermaid diagram, which you can then download. The interface is a chat client localised into more than twenty languages, with a public gallery of generated diagrams. Billing is unusually simple - one credit equals one AI-generated diagram - and both subscription and one-time credit purchases are offered. Starter is $5 a month for 25 diagrams, Pro $24 for 125, Team $99 for 500, and Enterprise $900 for 3,750. Paid tiers add image generation, Discord and email support, white paper generation, and early access. The operator is Neural Canvas Inc.
Starter $5/month buys 25 diagrams, Pro $24 buys 125, Team $99 buys 500, Enterprise $900 buys 3,750. One credit equals one diagram, and one-time credit purchases are offered alongside subscriptions. The app shows a starting credit balance before purchase.
Use tool ↗The pricing is the clearest thing about it - one credit, one diagram, no conversion maths - and $5 for 25 diagrams is cheap for occasional use. Mermaid output means the diagrams are text you can keep and edit elsewhere. Against that, the app is a lightly reskinned chat client with ad-network tags on the page, and the vendor's country and support arrangements are barely documented.
Watch out: Support and billing are handled under a different brand name than the site itself, so keep the support address from the billing page.
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