# Pi vs Muse Code (slim)

> Pi scores 68.4 (B) to Muse Code's 61.3 (C) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/earendil-pi-vs-muse-code.md (~2,650 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/earendil-pi-vs-muse-code.json · canonical https://www.anchorterminal.com/compare/earendil-pi-vs-muse-code
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-12

Pi scores 68.4 (B) on agent readiness against Muse Code's 61.3 (C), and leads in 4 of 7 scored categories. Muse Code leads on security & auth. Both do agent harnesses.

- Pi: B 68.4, rank #219 of 993 · https://www.anchorterminal.com/tools/earendil-pi.min.md
- Muse Code: C 61.3, rank #487 of 993 · https://www.anchorterminal.com/tools/muse-code.min.md
- Pi, good for Developers and pipelines that want a small, scriptable coding agent they can extend in TypeScript and drive over JSONL or RPC, inside their own container. Ahead on Reliability, 75 against 45; Payments & pricing, 60 against 20; Maintenance & community, 87 against 75; Transparency & trust, 64 against 57. Also No key needed to call it; Free to start without a card; Open source.
- Muse Code, good for Developers who want Meta's Muse models, Muse Wonder Full included, in a terminal or CI agent with the sandbox and approvals on from the first run. Ahead on Security & auth, 67 against 61. Also No incidents deducted, where Pi loses 4 points for them.

| Category | Pi | Muse Code |
| --- | --- | --- |
| Reliability (16%) | 75 | 45 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 84 | 84 |
| Agent ergonomics (13%) | 76 | 79 |
| Security & auth (14%) | 61 | 67 |
| Payments & pricing (10%) | 60 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 87 | 75 |
| Transparency & trust (7%) | 64 | 57 |

| Fact (where they differ) | Pi | Muse Code |
| --- | --- | --- |
| Vendor | Earendil | Meta |
| Auth | None | OAuth or key |
| Pricing | Free | Paid |
| Licence | MIT | Proprietary binary, used under the Meta Model API Terms of Service, which cover Meta's coding harness. Subscriptions are also under the Meta Subscription Terms of Service. The TypeScript and Python SDKs in the linked repository are MIT. |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| Last release | 2026-10-07 | 2026-10-11 |
| Terms last updated | no document linked |  |
| Privacy policy last updated | no document linked | couldn't be read |
| Popularity | 113k stars, 5.2M npm/wk | 63k npm/wk |