Model comparison
GPT-5.1 vs o3
Capability radar, value bars, and side-by-side posture.
GPT-5.1
Not scored
value score
o3
93
value score
GPT-5.1 ctx
—
o3 ctx
200K
Capability radar
Value · context · multimodal · openness · speed posture
Value head-to-head
- o393
Attribute tape
| Field | GPT-5.1 | o3 |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Context | — | 200K |
| Modalities | Text, Code | |
| Openness | — | Proprietary Model |
| Speed | — | — |
| Price | — | $10/1M in · $40/1M out |
| Value score | — | 93 |
| Summary | GPT-5.1 is OpenAI's latest flagship large language model family, available via ChatGPT and the API in Instant (fast, conversational) and Thinking (deeper reasoning) variants. It is designed for chat, coding, agentic workflows, and structured analysis, with adaptive reasoning that adjusts compute based on task complexity. | OpenAI reasoning model focused on hard problems. |