# Atticus vs Leon (slim)

> Atticus scores 42.9 (E) to Leon's 41 (E) for assistants that remember you. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/atticus-vs-leon.md (~3,250 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/compare/atticus-vs-leon.json · canonical https://www.anchorterminal.com/compare/atticus-vs-leon
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-15
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Atticus scores 42.9 (E) on agent readiness against Leon's 41 (E), and leads in 3 of 7 scored categories. Leon leads on schema & documentation and agent ergonomics. Both do assistants that remember you.

- Atticus: E 42.9, rank #974 of 1094 · https://www.anchorterminal.com/tools/atticus.min.md
- Leon: E 41, rank #995 of 1094 · https://www.anchorterminal.com/tools/leon.min.md
- Atticus, good for A person on macOS 26 with a Claude Pro or Max plan who wants voice control of apps, windows, files and the browser. Ahead on Reliability, 68 against 32; Security & auth, 49 against 34; Maintenance & community, 51 against 15.
- Leon, good for A developer who wants a self-hosted assistant with memory, computer use and a local model, and who will read the source. Ahead on Schema & documentation, 33 against 15; Agent ergonomics, 57 against 9.

| Category | Atticus | Leon |
| --- | --- | --- |
| Reliability (16%) | 68 | 32 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 15 | 33 |
| Agent ergonomics (13%) | 9 | 57 |
| Security & auth (14%) | 49 | 34 |
| Payments & pricing (10%) | 60 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 51 | 15 |
| Transparency & trust (7%) | 56 | 60 |

| Fact (where they differ) | Atticus | Leon |
| --- | --- | --- |
| Kind | Platform | Agent harness |
| Vendor | SaarthurR (Saarth Ranka) | Louis Grenard (Leon AI) |
| Pricing | Your plan | Free |
| Last release | 2026-10-14 | 2023-05-01 |
| Popularity | 163 stars | 18k stars |