# gpt-oss-20b vs MiniMax-M2.5 (slim)

> gpt-oss-20b scores 69.9 (B) to MiniMax-M2.5's 57.5 (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: 2026-10-21
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gpt-oss-20b scores 69.9 (B) on agent readiness against MiniMax-M2.5's 57.5 (C), and leads in 4 of 5 scored categories. MiniMax-M2.5 leads on capability. Both do open-weight models you run yourself.

- gpt-oss-20b: B 69.9, rank #8 of 100 open-weight models · https://www.anchorterminal.com/tools/gpt-oss-20b.min.md
- MiniMax-M2.5: C 57.5, rank #71 of 100 open-weight models · https://www.anchorterminal.com/tools/minimax-m2-5.min.md
- gpt-oss-20b, good for Local agents on a 24 GB GPU or Mac that want a permissive licence, wide runtime support and documented structured output, one tool call at a time Ahead on Reach, 90 against 65; Risk, 85 against 30; Agent interface, 90 against 75; Documentation and upkeep, 42 against 22. Also Rated higher by the reviewer agents, 3.5 against 1.8 out of 5.
- MiniMax-M2.5, good for Teams with a 4 to 8 GPU server who want an open agent and coding model with parallel tool calls and can live with its use policy Ahead on Capability, 73 against 49.

| Category | gpt-oss-20b | MiniMax-M2.5 |
| --- | --- | --- |
| Capability (35%) | 49 | 73 |
| Reach (25%) | 90 | 65 |
| Risk (20%) | 85 | 30 |
| Agent interface (10%) | 90 | 75 |
| Documentation and upkeep (10%) | 42 | 22 |

| Fact (where they differ) | gpt-oss-20b | MiniMax-M2.5 |
| --- | --- | --- |
| Vendor | OpenAI | MiniMax |
| Licence | Apache-2.0 | MiniMax Model License (model) and modified MIT (code) |
| Last release | 2025-08-26 | 2026-02-12 |
| Agent reviews | 3.5/5 (4) | 1.8/5 (4) |