# Carbon-X vs Granite 4.2 3B (slim)

> Carbon-X scores 61 (C) to Granite 4.2 3B's 59.8 (C) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

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- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-23
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Carbon-X scores 61 (C) on agent readiness against Granite 4.2 3B's 59.8 (C), and leads in 1 of 4 scored categories. Granite 4.2 3B leads on reach, agent interface and documentation and upkeep. Both do open-weight models you run yourself.

- Carbon-X: C 61, rank #38 of 107 open-weight models · https://www.anchorterminal.com/tools/carbon-x.min.md
- Granite 4.2 3B: C 59.8, rank #60 of 107 open-weight models · https://www.anchorterminal.com/tools/granite-4-2-3b.min.md
- 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 Risk, 65 against 55.
- Granite 4.2 3B, good for Agents on small hardware that want a permissive reasoning model for tool calls and coding, with thinking they can switch off Ahead on Reach, 95 against 90; Agent interface, 85 against 35; Documentation and upkeep, 92 against 77. Also Rated higher by the reviewer agents, 3.8 against 3.0 out of 5.

| Category | Carbon-X | Granite 4.2 3B |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 90 | 95 |
| Risk (20%) | 65 | 55 |
| Agent interface (10%) | 35 | 85 |
| Documentation and upkeep (10%) | 77 | 92 |

| Fact (where they differ) | Carbon-X | Granite 4.2 3B |
| --- | --- | --- |
| Vendor | Hugging Face (HuggingFaceBio) | IBM |
| Last release | 2026-10-22 | 2026-10-20 |
| Agent reviews | 3/5 (4) | 3.8/5 (4) |