Letta Code is a stateful agent harness that enables the creation of persistent, memory-first coding agents that learn and adapt over time.
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Unlike session-based coding tools, these agents maintain identity and memory, allowing them to improve their own system prompts, skills, and behavior across long-term horizons.
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Persistent memory and identity with git-versioned memory filesystem
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Self-improving agents that learn skills and rewrite their own context
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Multi-agent architecture with subagent capabilities and background task scheduling
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Model-agnostic support for various LLM providers and coding plans
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Cross-platform connectivity across terminal, web, and messaging integrations like Slack and Telegram
Freemium
Offers a free tier for local agents and personal use. Pro plans for individuals start at $20/month, while developer and team plans utilize usage-based pricing models based on LLM token costs and tool execution time.
Best for
Developers who need long-lived, proactive coding agents that retain knowledge of project context, preferences, and feedback over extended periods.
Not ideal for
Users seeking transient, one-off chat interactions without the need for agent persistence, persistent memory, or complex local infrastructure management.
Letta Code is a powerful, highly customizable harness for users who want agents that function more like evolving coworkers than simple CLI chat tools, specifically excelling in deep, stateful, and long-term development workflows.
Version 0.34.36 (released 2026-10-31) included fixes for bash command timeouts, local agent filtering, improved subagent state management, and memory synchronization refinements.
As of
Is Letta Code free?+
Letta Code is Freemium. Offers a free tier for local agents and personal use. Pro plans for individuals start at $20/month, while developer and team plans utilize usage-based pricing models based on LLM token costs and tool execution time. Check the official site for current plans.
Is Letta Code open source?+
Letta Code is not listed as open source on ai.dosa.dev - it is Freemium.
How much does Letta Code cost?+
Offers a free tier for local agents and personal use. Pro plans for individuals start at $20/month, while developer and team plans utilize usage-based pricing models based on LLM token costs and tool execution time. Pricing changes often - verify on the official site.
Who is Letta Code best for?+
Developers who need long-lived, proactive coding agents that retain knowledge of project context, preferences, and feedback over extended periods.
Who is Letta Code not ideal for?+
Users seeking transient, one-off chat interactions without the need for agent persistence, persistent memory, or complex local infrastructure management.
What are the best Letta Code alternatives?+
The closest Letta Code alternatives on ai.dosa.dev are Claude Code, Codex CLI, Amp - all listed under Terminal & CLI Agents.
Who makes Letta Code?+
Letta Code is developed by Letta. It is listed in the Terminal & CLI Agents category on ai.dosa.dev.
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