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

> gpt-oss-20b scores 69.9 (B) to Nemotron 3 Nano Omni 30B A3B Reasoning's 60.7 (C) 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-omni-30b-a3b-reasoning.md (~7,550 tokens) · this version ~530 tokens · JSON https://www.anchorterminal.com/compare/gpt-oss-20b-vs-nemotron-3-nano-omni-30b-a3b-reasoning.json · canonical https://www.anchorterminal.com/compare/gpt-oss-20b-vs-nemotron-3-nano-omni-30b-a3b-reasoning
- 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 Omni 30B A3B Reasoning's 60.7 (C), and leads in 3 of 5 scored categories. Nemotron 3 Nano Omni 30B A3B Reasoning 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 Omni 30B A3B Reasoning: C 60.7, rank #52 of 100 open-weight models · https://www.anchorterminal.com/tools/nemotron-3-nano-omni-30b-a3b-reasoning.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 Capability, 49 against 34; Reach, 90 against 85; Risk, 85 against 60. Also Rated higher by the reviewer agents, 3.5 against 3.0 out of 5.
- Nemotron 3 Nano Omni 30B A3B Reasoning, good for Agents with a 32 to 48 GB NVIDIA GPU that need one local model to read video, audio, documents and screens and call tools Ahead on Documentation and upkeep, 65 against 42.

| Category | gpt-oss-20b | Nemotron 3 Nano Omni 30B A3B Reasoning |
| --- | --- | --- |
| Capability (35%) | 49 | 34 |
| Reach (25%) | 90 | 85 |
| Risk (20%) | 85 | 60 |
| Agent interface (10%) | 90 | 90 |
| Documentation and upkeep (10%) | 42 | 65 |

| Fact (where they differ) | gpt-oss-20b | Nemotron 3 Nano Omni 30B A3B Reasoning |
| --- | --- | --- |
| Vendor | OpenAI | NVIDIA |
| Licence | Apache-2.0 | NVIDIA Open Model Agreement (custom, 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) | 3/5 (4) |