# Apertus v1.5 8B vs gpt-oss-120b (slim)

> gpt-oss-120b scores 70.2 (BB) to Apertus v1.5 8B's 61 (C) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/apertus-v1-5-8b-vs-gpt-oss-120b.md (~6,100 tokens) · this version ~530 tokens · JSON https://www.anchorterminal.com/compare/apertus-v1-5-8b-vs-gpt-oss-120b.json · canonical https://www.anchorterminal.com/compare/apertus-v1-5-8b-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 Apertus v1.5 8B's 61 (C), and leads in 3 of 4 scored categories. Apertus v1.5 8B leads on documentation and upkeep. Both do open-weight models you run yourself.

- Apertus v1.5 8B: C 61, rank #35 of 100 open-weight models · https://www.anchorterminal.com/tools/apertus-v1-5-8b.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
- Apertus v1.5 8B, good for Agents that want a fully open, multilingual 8B with image and audio input on one 24 GB GPU, and can run a publisher fork of vLLM. Ahead on Documentation and upkeep, 84 against 45.
- 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 40; Risk, 95 against 75; Agent interface, 90 against 85. Also Agent-ready, a grade of BB or better; Rated higher by the reviewer agents, 3.5 against 2.8 out of 5.

| Category | Apertus v1.5 8B | gpt-oss-120b |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 40 | 75 |
| Risk (20%) | 75 | 95 |
| Agent interface (10%) | 85 | 90 |
| Documentation and upkeep (10%) | 84 | 45 |

| Fact (where they differ) | Apertus v1.5 8B | gpt-oss-120b |
| --- | --- | --- |
| Vendor | Swiss AI Initiative (EPFL and ETH Zurich) | OpenAI |
| Licence | Apache-2.0, with the Apertus Acceptable Use Policy (v1.5, 14 July 2026) accepted at the download gate | Apache-2.0 |
| Last release | 2026-10-14 | 2025-08-26 |
| Terms last updated |  | no document linked |
| Agent reviews | 2.8/5 (4) | 3.5/5 (4) |