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Thesys Pricing 2026

Plans, hidden costs, and cheaper alternatives compared

Is Thesys worth the price?

75/10

Thesys offers a fair pricing structure, especially with its generous Free tier providing 5K API calls and $10 in LLM credits.

The Build tier at $49/month for 25K calls is competitive for small teams, though the per-call overage of $0.002 can add up. The Grow tier at $499/month for 500K calls offers better value for scaling teams with a lower overage cost.

This pricing is best for developers and startups looking to integrate interactive UI into their LLM applications, with clear paths for growth.

Pricing Plans

Free

$0/month

  • Free credits for developers exploring Generative UI
  • 5K C1 API calls / month
  • Upgrade for additional usage
  • LLM credits worth $10 free
  • Style customizations
  • Supports all popular LLMs
  • Discord Community support

Build

$49/month

  • Usage-based plan for teams ready to ship with GenUI.
  • 25K C1 API calls / month
  • $0.002 per call after that
  • Everything in Free
  • Higher request priority
  • Higher rate limits
  • Email Support

Grow

$499/month

  • Usage-based plan for teams ready to ship with GenUI.
  • 500K C1 API calls / month
  • $0.001 per call after that
  • Everything in Build
  • Highest request priority
  • Highest rate limits
  • Priority Slack Support
  • Dedicated Solutions engineer (Add-on)
  • SSO SAML (Coming Soon)

Scale

Contact sales

  • Secure deployments for large orgs with scaled needs.
  • Everything in Grow
  • Self-hosting or VPC deployment options
  • Custom rate limits and usage controls
  • SOC2, HIPAA, and compliance support
  • Enterprise-grade SLAs & uptime guarantees
  • Bring your own LLM key (On Request)
  • Support SLAs

Hidden Costs & Gotchas

Overage fees for C1 API calls

Dedicated Solutions engineer is an add-on

SSO SAML is 'Coming Soon'

Bring your own LLM key is 'On Request'

Which Plan Do You Need?

Developers exploring Generative UI

Startups shipping GenUI applications

Teams needing scalable interactive LLMs

How Thesys Compares to Competitors

Compared to platforms like Vercel or Netlify for UI deployment, Thesys focuses specifically on interactive UI for LLMs. While direct pricing comparisons are difficult due to different service offerings, Thesys's $49/month Build tier for 25K API calls seems reasonable for its specialized service, whereas general cloud providers might offer broader compute at similar price points but without the GenUI focus. For enterprise needs, the 'Contact Sales' model for Scale is standard, similar to many enterprise SaaS solutions.

Thesys Pricing FAQ

How much does Thesys cost?

Thesys starts at $49/month on the Build plan. It offers 2 paid tiers ranging from $49/month up to $499/month. A free plan is also available with limited features.

Does Thesys have a free plan?

Yes. Thesys offers a free plan called "Free". It includes: Free credits for developers exploring Generative UI, 5K C1 API calls / month, Upgrade for additional usage.

What is the cheapest Thesys paid plan?

The cheapest paid plan for Thesys is "Build" at $49/month. Key features include: Usage-based plan for teams ready to ship with GenUI., 25K C1 API calls / month, $0.002 per call after that.