Vendor and product family
Letta
Letta Inc., founded by Charles Packer and Sarah Wooders, publishes Letta Agent and developer tooling. Its careers page identifies an in-person office in San Francisco’s Jackson Square.
1 source-reviewed catalog entry. Reviews check official published information and do not establish hands-on testing.
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App or product
Letta Agent
Work with persistent agents that remember context, use tools, and run coding or research tasks locally or in the cloud.
Official source reviewed 2026-10-20
Web account or Letta Code CLI; CLI docs require Node.js 22.19+. Free personal plan supports 3 stateful agents with limited model usage and external keys or coding plans. Pro is $20/month with quotas and paid overage. API plan is separate: $20/month plus agent, tool-execution and model usage. External providers can charge separately.
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