Pricing

Letta Code is free to use with your own API keys, for example from OpenAI, Anthropic, or OpenRouter. You can also connect Letta Code to coding plans such as the ChatGPT (Codex) coding plan and zAI coding plans.

To connect your existing plans, simply use /connect in the CLI/TUI, or click “Connect model providers” in the bottom-left menu in the desktop app. See our LLM providers guide for more information.

Cloud features

Letta Code is fully open source and can run without a login / account, including with local models. Using Constellation features such as chat.letta.com, remote environments, managed state, and Letta Auto inference require signing in with /login (or via the desktop app).

Creating an account on Constellation is free. Free accounts support up to three agents with managed state.

LLM gateway

Agents connected to Constellation can use the built-in LLM gateway to access a variety of model providers at passthrough (non-markup) API pricing. Simply navigate to your usage page and enable pay-as-you-go credit purchasing.

Agents managed through Constellation can also use BYOK for supported providers and coding plans through the LLM gateway, but cannot use local inference (e.g. Ollama / LM Studio).

Personal plans

You can also upgrade to a paid personal plan for included LLM usage through Letta Auto. Personal plans also allow additional pay-as-you-go LLM usage across all available providers, so you can use providers like OpenAI and Anthropic at standard API pricing but with centralized billing.

Personal Plans

Free

Get started at no cost.

$0 /month

• Limited agents
• Limited usage of Letta Auto
• Bring your own API keys and external coding plans

View quickstart ↗

Pro

For personal use.

$20 /month

• Letta Auto weekly + monthly quota
• Pay-as-you-go overage
• Up to 20 stateful agents

Get Pro ↗

Teams / Enterprise

If you would like to configure managed per-seat pricing for Letta Code for your business, please contact us.

What is Letta Auto?

Letta Auto selects frontier models that balance general intelligence, coding knowledge, and speed. To use Letta Auto, select Auto in the model selector, or choose one of the more specialized routes for specific applications: Auto Chat for non-coding workloads, or Auto Fast for a model that’s optimized for additional speed over intelligence.

How much usage do I need?

Your ideal plan will vary depending on how you use your agents. Workloads that involve heavy tool use and token generation (e.g. coding or computer use tasks) will drain quota faster.

• Chat users: Often stay within the Pro tier limits
• Limited coding users: May fit within Pro depending on workloads
• Casual coding users (a few hours per day): Typically ~$100/mo+ usage
• Power users (long sessions, many parallel agents): Often approach or exceed $200+/mo in total usage

For agent power users (many hours of coding per day, or heavy automated use), we highly recommend combining Letta Code with an external coding plan, such as the zAI coding plan, or ChatGPT coding plan (ChatGPT Plus/Pro).

What happens when I reach my Letta Auto limit?

When you exceed your included weekly or monthly usage, you can continue at pay-as-you-go API rates, available through purchasing credits. You can upgrade your plan, add credits, and configure auto-top up in your account’s usage dashboard.

Team Plans

Teams and organizations can purchase seats for individuals using “Team Plans”. Our personal plans are for personal use only and cannot be shared between individuals. Contact us for more information.

Personal Plans vs API Plan

Personal Plan quotas are intended for non-automated, personal/individual usage through chat.letta.com or Letta Code (desktop app, interactive CLI, and remote environments mode). The schedules and channels features native to Letta Code are supported exceptions to our automated use policy.

For automated (scripted) usage and external applications that build on the Letta API, see our API plan.

All plans support BYOK (bring your own API keys).

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Frequently asked questions

Can I use my own API keys?

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

What’s the difference between Personal Plans and the API Plan?

Personal Plans are for individual, hands-on use via Letta Code or the chat interface. They provide usage quotas that reset monthly. Personal Plan quotas require OAuth authentication (signing in via the Letta chat app or Letta Code).

The API Plan is for developers and teams building applications on top of the Letta API with automated workloads. It uses API key authentication with purely usage-based credit pricing.

What are the usage limits for my plan?

The free tier includes a limited number of total agents and LLM requests with rotating free models. Personal Plans include monthly usage quotas that scale with each tier.

Paid plan users can view current usage in the account dashboard.

What happens when I reach my limit?

On Personal Plans, you can continue using Letta with pay-as-you-go pricing for additional models or overage. You’ll be notified by email when approaching your limit.

Where can I ask more questions?

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