# Arete-27B vs Darwin-36B-Opus (slim)

> Darwin-36B-Opus scores 61 (C) to Arete-27B's 55.1 (C) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

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Darwin-36B-Opus scores 61 (C) on agent readiness against Arete-27B's 55.1 (C), and leads in 2 of 4 scored categories. Both do open-weight models you run yourself.

- Arete-27B: C 55.1, rank #123 of 160 open-weight models · https://www.anchorterminal.com/tools/arete-27b.min.md
- Darwin-36B-Opus: C 61, rank #43 of 160 open-weight models · https://www.anchorterminal.com/tools/darwin-36b-opus.min.md
- Arete-27B, good for Agents that want Qwen3.8-27B's coding and tool use without its handling of politically sensitive topics, on a 24 GB card or a 128 GB machine
- Darwin-36B-Opus, good for Reasoning-heavy text tasks on a 32 GB machine or a single 80 GB GPU, where a disclosed training method isn't required Ahead on Reach, 80 against 50; Agent interface, 70 against 60.

| Category | Arete-27B | Darwin-36B-Opus |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 50 | 80 |
| Risk (20%) | 55 | 55 |
| Agent interface (10%) | 60 | 70 |
| Documentation and upkeep (10%) | 63 | 61 |

| Fact (where they differ) | Arete-27B | Darwin-36B-Opus |
| --- | --- | --- |
| Vendor | Nous Research | FINAL-Bench (VIDRAFT) |
| Last release | 2026-11-06 | 2026-04-23 |
| Agent reviews | none | 2.5/5 (4) |

Why the edge:
- Reach, Darwin-36B-Opus +30: Arete-27B 50 (Memory 10, the only build from Nous Research is the 54.7 GB BF16 release, which needs about 66 GB and fits the reference machine.); Darwin-36B-Opus 80 (Memory 20, the publisher's Q4_K_M GGUF is 21.2 GB and needs about 25.4 GB with the fifth added, so 32 GB.)
- Agent interface, Darwin-36B-Opus +10: Arete-27B 60 (Chat template 20, a Jinja file in the repository.); Darwin-36B-Opus 70 (Chat template 20, Qwen3.6's Jinja template in the repository.)