Claude vs Letta
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose Claude if you want anthropic's ai assistant: chat, artifacts, projects, research, and agentic cowork (Copilot, freemium); choose Letta if you want open-source framework for stateful ai agents with long-term memory (Supervised agent, freemium).
| Claude | Letta | |
|---|---|---|
| What it is | Anthropic's AI assistant: chat, Artifacts, Projects, Research, and agentic Cowork | Open-source framework for stateful AI agents with long-term memory |
| Type | product-with-agents | framework |
| Autonomy | Copilot | Supervised agent |
| Pricing | freemium · Free; Pro $20/mo ($17/mo billed annually) | freemium · Free (open source); Cloud Pro $20/mo + usage |
| Best for | consumers, developers, enterprise, mid-market | developers |
| Deployment | saas, api | self-hosted, saas, api |
| Modalities | text, voice, image, code, api | text, code, api |
| Models | claude, proprietary | model-agnostic, gpt, claude, open-source |
| Protocols | mcp, function-calling, rest-api | mcp, rest-api |
| Integrations | Gmail, Google Workspace, Slack, Jira, Zapier, Microsoft 365 | MCP servers, OpenAI, Anthropic, Ollama, custom tools |
| Capabilities | 5 documented | 4 documented |
Claude
- +Strong writing, reasoning, and coding plus interactive Artifacts in one assistant
- +Open MCP Connectors wire it into Gmail, Workspace, Slack, Jira, and Zapier
- +Generous free tier across web, desktop, and mobile; Research and Cowork add real agentic work
- -Most of the product is assistant/copilot grade; the agentic modes are newer and narrower
- -Cowork ships as a research preview and (for now) on the desktop app
Letta
- +Genuinely differentiated memory architecture (self-editing memory blocks from MemGPT research, not a RAG wrapper)
- +Open source under Apache-2.0, self-hostable, and model-agnostic, which avoids lock-in
- +Strong developer ergonomics: REST API, Python and TypeScript SDKs, and the ADE GUI with deep state visibility
- -Positioning has become muddy across research lab, stateful-agents platform, and a Letta Code coding agent
- -Real usage costs climb well beyond the $20 Pro tier once LLM token pass-through is counted
Which should you choose?
Claude is anthropic's ai assistant: chat, artifacts, projects, research, and agentic cowork, best for consumers, developers, enterprise, mid-market. Letta is open-source framework for stateful ai agents with long-term memory, best for developers. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.