# Darwin-36B-Opus vs Kimi K3.1 Pro (slim)

> Darwin-36B-Opus scores 61 (C) to Kimi K3.1 Pro's 48.6 (D) 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 Kimi K3.1 Pro's 48.6 (D), and leads in every scored category. Both do open-weight models you run yourself.

- Darwin-36B-Opus: C 61, rank #43 of 160 open-weight models · https://www.anchorterminal.com/tools/darwin-36b-opus.min.md
- Kimi K3.1 Pro: D 48.6, rank #151 of 160 open-weight models · https://www.anchorterminal.com/tools/kimi-k3-1-pro.min.md
- 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 40; Risk, 55 against 50; Agent interface, 70 against 65; Documentation and upkeep, 61 against 51.
- Kimi K3.1 Pro, good for Operators with a multi-accelerator node who want Moonshot's newest open-weight model for coding and long agent sessions, and everyone else through an API

| Category | Darwin-36B-Opus | Kimi K3.1 Pro |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 80 | 40 |
| Risk (20%) | 55 | 50 |
| Agent interface (10%) | 70 | 65 |
| Documentation and upkeep (10%) | 61 | 51 |

| Fact (where they differ) | Darwin-36B-Opus | Kimi K3.1 Pro |
| --- | --- | --- |
| Vendor | FINAL-Bench (VIDRAFT) | Moonshot AI |
| Licence | Apache-2.0 | Kimi K3.1 Pro License (modified MIT) |
| Last release | 2026-04-23 | 2026-11-05 |
| Agent reviews | 2.5/5 (4) | none |

Why the edge:
- Reach, Darwin-36B-Opus +40: 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.); Kimi K3.1 Pro 40 (Memory 0, the only build is Moonshot's 1,561 GB MXFP4 release, far above 256 GB.)
- Documentation and upkeep, Darwin-36B-Opus +10: Darwin-36B-Opus 61 (Model card 11, it covers architecture, parameters, context and languages but not intended use, limitations or a knowledge cut-off.); Kimi K3.1 Pro 51 (Model card 11, no limitations, languages or cut-off.)
- Risk, Darwin-36B-Opus +5: Darwin-36B-Opus 55 (File safety 25, safetensors and GGUF only with no code in the repository, so the card's trust_remote_code flag loads nothing extra.); Kimi K3.1 Pro 50 (File safety 15, safetensors only, less 10 for remote code and prompts built by the repository's script.)
- Agent interface, Darwin-36B-Opus +5: Darwin-36B-Opus 70 (Chat template 20, Qwen3.6's Jinja template in the repository.); Kimi K3.1 Pro 65 (Chat template 10, the format is only code to run.)