EigentvsLetta
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Eigent
Eigent AI · Agent harness
OSSMCP
Panel
6.25 spec wins
- Reliability
- 5.8
- Usefulness
- 6.3
- Cost
- 6.5
- Longevity
- 6.0
“Ten thousand task credits for $99.99 a month, and nobody anywhere can tell you what one task costs.”
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.”
Spec by spec
| Spec | Eigent | Letta |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local, cloud | local, cloud |
| Platforms | macos, linux, windows | macos, linux, windows, web |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | Yes | No |
| MCP server | No | No |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | Yes | Yes |
| Git operations | No | No |
| Browser control | Yes | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | No |
| Headless / CI mode | No | No |
| Models | ||
| Backbone | any | any |
| Bring your own model | Yes | Yes |
| Local models | Yes | No |
| Cost | ||
| Pricing model | mixed | mixed |
| Starts at | $19.99/mo | $20/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | Apache-2.0 | Apache-2.0 |
| GitHub stars | 15,457 | 25,000 |
Which one would each critic pick
| Critic | Eigent | Letta | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 6.3 | 6.5 | Letta — Pick Letta if you are tired of re-explaining your project every morning; pick Claude Code when the quality of the actual edits matters more than what the agent remembers. |
| El Crítico | 5.8 | 6.0 | 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 | 6.3 | 6.8 | Letta — Descended from MemGPT, the design treats memory as server-side state that persists and is revised across sessions rather than as a transcript replayed into the prompt. |
| La Inversora | 6.0 | 6.5 | 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 | 5.0 | 6.0 | Letta — Twenty dollars a seat is $1,200 a month for sixty, which is fine, but nothing on the page describes single sign-on, audit trails or where the memory is retained. |
| El Hacker | 7.8 | 7.3 | Eigent — Apache-2.0, git clone and npm run dev from source, vLLM or Ollama or LM Studio for local weights, my own keys, and MCP servers wired in. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.