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.
This comparison is generated from the sourced Claude and Letta profiles. Open either profile to review its evidence and last-reviewed date.