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API Platform
Pricing

Pricing (API)

Usage-based pricing for building on the Letta API

Pricing on the Letta API Platform is usage-based, and LLM usage is charged based on the underlying token costs of the model used.

For personal use pricing (quota-based and designed for Letta Code and chat.letta.com), see our Personal Plans.

API Plan

For teams building on the Letta API.

$20 /month
  • Unlimited agents
  • $0.10 / active agent / mo
  • $0.00015 / sec tool execution
  • API key authentication
  • Pay-as-you-go LLM usage
Get started ↗

Enterprise

For organizations with higher volume needs.

Custom
  • Volume-based pricing
  • Increased quotas
  • Role-based access control
  • SAML/OIDC SSO
  • Dedicated support
Contact us ↗

Frequently asked questions

Section titled “Frequently asked questions”
Can I use the API Plan with Letta Code?

Yes, you can use the API Plan with Letta Code. Letta Code will draw down credits according to the model usage from your balance.

We recommend most users use Personal Plans when using Letta Code. Personal Plans can enable auto top-up and configure additional usage when quota is exceeded.

What are credits?

Credits are a standard cost unit for resources in Letta, such as LLM inference and CPU cycles. Model requests consume credits at a rate depending on the model API pricing. For current model pricing, see app.letta.com/models.

How is tool execution charged?

Server-side tools on the Letta API incur a credit cost for CPU time. On the API Plan, tool execution is billed at $0.00015/sec. Remote MCP tools are executed by the MCP provider, so do not have a credit cost. Letta built-in tools are free, with the exception of web search/fetch tools. Client-side tools (e.g. bash tools in Letta Code) run on your machine, so they don’t incur any credit cost.

What happens when I reach my limit?

On the API Plan, all usage is pay-as-you-go. You’ll be notified by email when approaching your spending limit.

Can I use my own API keys?

Yes. All plans support bringing your own API keys (BYOK). When you use your own keys, usage goes directly through your provider account instead of consuming Letta credits.

Where can I ask more questions?

Reach out to support@letta.com, or join our community on Discord.