Model comparison
gpt-oss-120b vs Claude 4 Opus
Capability radar, value bars, and side-by-side posture.
gpt-oss-120b
Not scored
value score
Claude 4 Opus
95
value score
gpt-oss-120b ctx
—
Claude 4 Opus ctx
200K
Capability radar
Value · context · multimodal · openness · speed posture
Value head-to-head
- Claude 4 Opus95
Attribute tape
| Field | gpt-oss-120b | Claude 4 Opus |
|---|---|---|
| Developer | Scrappy-Doo | Anthropic |
| Context | — | 200K |
| Modalities | Text, Code, Image | |
| Openness | — | Proprietary Model |
| Speed | — | — |
| Price | — | $15/1M in · $75/1M out |
| Value score | — | 95 |
| Summary | gpt-oss-120b is an open-weight, Apache 2.0-licensed large language model from OpenAI optimized for reasoning, tool use, function calling, and agentic workflows. It is designed to run on a single H100-class (80 GB) GPU and achieves near-parity with o4-mini on core reasoning benchmarks. | Anthropic frontier Opus-class model. |