LettavsNextClaw
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Letta
Letta · Agent harness
OSS
Panel
6.51 spec wins
- Reliability
- 6.0
- Usefulness
- 6.7
- Cost
- 7.0
- Longevity
- 6.3
“It used to be called MemGPT, and it remembers that.”
NextClaw
Peiiii · Agent harness
OSSMCP
Panel
6.56 spec wins
- Reliability
- 6.0
- Usefulness
- 6.7
- Cost
- 7.5
- Longevity
- 5.7
“It has an AI inbox, so the messages you were ignoring now arrive pre-sorted by something that never ignores anything.”
Spec by spec
| Spec | Letta | NextClaw |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local, cloud | local, cloud |
| Platforms | macos, linux, windows, web | macos, linux, windows, web |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | No | Yes |
| MCP server | No | No |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | Yes | Yes |
| Git operations | No | No |
| Browser control | No | Yes |
| Sandboxed execution | No | No |
| Multi-agent orchestration | No | YesDedicated Agents each hold their own role, memory, skills, runtime and workspace, and background agents run scheduled and long-running work. |
| Headless / CI mode | No | YesMany core operations are available from the nextclaw CLI in a terminal, script or CI job, with machine-readable output where supported. |
| Models | ||
| Backbone | any | OpenRouter, OpenAI, Anthropic, Gemini, DeepSeek, MiniMax, Moonshot, DashScope, Zhipu, vLLM |
| Bring your own model | Yes | Yes |
| Local models | No | YesvLLM and custom OpenAI-compatible endpoints are listed among the supported model providers. |
| Cost | ||
| Pricing model | mixed | byok |
| Starts at | $20/mo | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | Apache-2.0 | MIT |
| GitHub stars | 25,000 | 260 |
Which one would each critic pick
| Critic | Letta | NextClaw | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 6.5 | 6.8 | NextClaw — Pick NextClaw if you already have two or three agent CLIs installed and want one place to run them; pick whichever one you use most if the answer is one. |
| El Crítico | 6.0 | 5.8 | Letta — The repository this project is known by is now a landing page, and the actual source moved to letta-code, so the stars and the code no longer live in the same place. |
| El Profesor | 6.8 | 7.0 | NextClaw — The unit of persistence is the task rather than the chat: one object holds the conversation, its source files, the documents produced and the follow-up work that came out of it. |
| La Inversora | 6.5 | 5.3 | Letta — The free plan caps you at three stateful agents, which is a well-drawn funnel: the limit bites exactly when the product has started to be worth paying for. |
| La Jefa | 6.0 | 6.0 | no preference |
| El Hacker | 7.3 | 8.0 | NextClaw — MIT, MCP servers attach, and a self-hosted vLLM or any OpenAI-compatible endpoint is on the documented provider list, so the whole workspace runs against my own inference. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.