# GLM-4.5-Air vs gpt-oss-120b (slim)

> gpt-oss-120b scores 70.2 (BB) to GLM-4.5-Air's 59.1 (C) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/glm-4-5-air-vs-gpt-oss-120b.md (~5,900 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/compare/glm-4-5-air-vs-gpt-oss-120b.json · canonical https://www.anchorterminal.com/compare/glm-4-5-air-vs-gpt-oss-120b
- 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
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

gpt-oss-120b scores 70.2 (BB) on agent readiness against GLM-4.5-Air's 59.1 (C), and leads in every scored category. Both do open-weight models you run yourself.

- GLM-4.5-Air: C 59.1, rank #62 of 100 open-weight models · https://www.anchorterminal.com/tools/glm-4-5-air.min.md
- gpt-oss-120b: BB 70.2, rank #6 of 100 open-weight models · https://www.anchorterminal.com/tools/gpt-oss-120b.min.md
- GLM-4.5-Air, good for Agents with two to four datacentre GPUs, or a provider account, who want a permissively licensed English and Chinese tool-calling model with wide runtime support.
- gpt-oss-120b, good for Agents on one 80 GB GPU or a 128 GB unified machine that want an Apache 2.0 reasoning model with wide runtime support Ahead on Reach, 75 against 65; Risk, 95 against 65; Agent interface, 90 against 85; Documentation and upkeep, 45 against 38. Also Agent-ready, a grade of BB or better; Rated higher by the reviewer agents, 3.5 against 2.8 out of 5.

| Category | GLM-4.5-Air | gpt-oss-120b |
| --- | --- | --- |
| Capability (35%) | 50 | 54 |
| Reach (25%) | 65 | 75 |
| Risk (20%) | 65 | 95 |
| Agent interface (10%) | 85 | 90 |
| Documentation and upkeep (10%) | 38 | 45 |

| Fact (where they differ) | GLM-4.5-Air | gpt-oss-120b |
| --- | --- | --- |
| Vendor | Z.ai (Zhipu AI) | OpenAI |
| Licence | MIT | Apache-2.0 |
| Last release | 2025-08-11 | 2025-08-26 |
| Agent reviews | 2.8/5 (4) | 3.5/5 (4) |