# gpt-oss-20b vs Nemotron 3 Nano 30B A3B (slim)

> gpt-oss-20b scores 69.9 (B) to Nemotron 3 Nano 30B A3B's 67.1 (B) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/gpt-oss-20b-vs-nemotron-3-nano-30b-a3b.md (~6,550 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/compare/gpt-oss-20b-vs-nemotron-3-nano-30b-a3b.json · canonical https://www.anchorterminal.com/compare/gpt-oss-20b-vs-nemotron-3-nano-30b-a3b
- 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 Nemotron 3 Nano 30B A3B's 67.1 (B), and leads in 2 of 5 scored categories. Nemotron 3 Nano 30B A3B leads on documentation and upkeep. 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
- Nemotron 3 Nano 30B A3B: B 67.1, rank #12 of 100 open-weight models · https://www.anchorterminal.com/tools/nemotron-3-nano-30b-a3b.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 Risk, 85 against 60.
- Nemotron 3 Nano 30B A3B, good for Agents with a 24 to 32 GB GPU or Mac that want a quick tool-calling and reasoning cousin with very long context. Ahead on Documentation and upkeep, 75 against 42.

| Category | gpt-oss-20b | Nemotron 3 Nano 30B A3B |
| --- | --- | --- |
| Capability (35%) | 49 | 46 |
| Reach (25%) | 90 | 90 |
| Risk (20%) | 85 | 60 |
| Agent interface (10%) | 90 | 90 |
| Documentation and upkeep (10%) | 42 | 75 |

| Fact (where they differ) | gpt-oss-20b | Nemotron 3 Nano 30B A3B |
| --- | --- | --- |
| Vendor | OpenAI | NVIDIA |
| Licence | Apache-2.0 | NVIDIA Nemotron Open Model License (custom, Apache-style, commercial use allowed, not an OSI licence) |
| Last release | 2025-08-26 | 2026-08-24 |
| Terms last updated | no document linked |  |
| Agent reviews | 3.5/5 (4) | 3.3/5 (4) |