Casturi
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Start free. Grow when you're ready.

Every account starts on Free. During the invited preview, upgrades are granted by Team Casturi with no payment step.

  • Free

    10

    messages a day

    Try Casturi Chat with every feature switched on.

    Request an invite

  • Pro

    100

    messages a day

    For people who rely on Casturi every working day.

    Ask for Pro

  • Unlimited

    No cap

    on daily messages

    For heavy daily use across research, writing and code.

    Ask for Unlimited

  • API and enterprise

    Custom

    tokens and deployment

    For teams building on Casturi or bringing it into their organization.

    Talk to Team Casturi

Every Chat plan includes

Plans differ only in how many messages you can send each day. Every feature is on for everyone.

  • Casturi models, with settings you can tune per conversation
  • Web search with sources behind every answer
  • Chat with your files, with citations to the passage
  • Code interpreter and live artifacts
  • Agent builder and the agent marketplace
  • Memory, prompt library and bookmarks
  • Temporary chats and shared links
  • Sign in with email or Google
  • During the invited beta, conversations may train the model — see our Privacy Policy

API, startups and enterprise.

Build Casturi into your product, or bring it to your whole organization. Tell us what you need and Team Casturi will shape the right setup with you.

Talk to Team Casturi
  • Casturi API keys. OpenAI-compatible endpoints with streaming and tool calling.
  • Zero data retention. Request content isn't stored after the response is delivered.
  • Startup program. 100M free tokens for eligible startups, with direct engineering support.
  • Dedicated deployments. Capacity set aside for your workloads.
  • Domain models first. Early access to fintech, enterprise, industry policy and pharma models as they're released.

Plan questions.

Do I need a card to start?

No. There's no payment step during the preview. Every account starts on Free.

How do upgrades work?

Request Pro or Unlimited through the access form. Team Casturi reviews the request and upgrades your account, and your new daily limit applies right away.

Who qualifies for the startup program?

Startups building a product on Casturi. Choose "Startup program" in the access form and tell us what you're building. Team Casturi reviews every application.

When will Casturi be available to everyone?

Soon. Casturi is in invited preview while we scale, and general availability is coming soon.