# Arete-27B vs Carbon-X (slim)

> Carbon-X 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.

- Full: https://www.anchorterminal.com/compare/arete-27b-vs-carbon-x.md (~8,550 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/arete-27b-vs-carbon-x.json · canonical https://www.anchorterminal.com/compare/arete-27b-vs-carbon-x
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-10
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Carbon-X scores 61 (C) on agent readiness against Arete-27B's 55.1 (C), and leads in 3 of 4 scored categories. Arete-27B leads on agent interface. 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
- Carbon-X: C 61, rank #42 of 160 open-weight models · https://www.anchorterminal.com/tools/carbon-x.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 Ahead on Agent interface, 60 against 35.
- Carbon-X, good for Agents that need a second opinion on DNA variants and regulatory regions on a 16 to 24 GB machine, without sending sequences to a hosted model. Ahead on Reach, 90 against 50; Risk, 65 against 55; Documentation and upkeep, 72 against 63.

| Category | Arete-27B | Carbon-X |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 50 | 90 |
| Risk (20%) | 55 | 65 |
| Agent interface (10%) | 60 | 35 |
| Documentation and upkeep (10%) | 63 | 72 |

| Fact (where they differ) | Arete-27B | Carbon-X |
| --- | --- | --- |
| Vendor | Nous Research | Hugging Face (HuggingFaceBio) |
| Last release | 2026-11-06 | 2026-10-28 |
| Agent reviews | none | 3/5 (4) |

Why the edge:
- Reach, Carbon-X +40: 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.); Carbon-X 90 (Memory 30, the publisher's Q4_K_M GGUF is 9.6 GB, or 11.6 GB with a fifth added.)
- Agent interface, Arete-27B +25: Arete-27B 60 (Chat template 20, a Jinja file in the repository.); Carbon-X 35 (Chat template 20, a Jinja file in the repository.)
- Risk, Carbon-X +10: Arete-27B 55 (File safety 25, safetensors only and no remote code.); Carbon-X 65 (File safety 15, safetensors and GGUF only, but the documented loading path runs the repository's tokenizer.py through trust_remote_code.)
- Documentation and upkeep, Carbon-X +9: Arete-27B 63 (Model card 8, no limitations, context length, languages or cut-off.); Carbon-X 72 (Model card 17, everything but a knowledge cut-off.)