o1-pro
OpenAI o1-pro: max-compute variant of o1, uses more compute to think harder for consistently better answers. Responses API only, no streaming, deprecated.
Model Overview
Capabilities, design details, and architectural traits
o1 pro - Maximum Compute for Consistently Better Answers
o1 pro is OpenAI's maximum-compute variant of o1, built around a single documented principle: using more compute to think harder and deliver consistently better answers. It is the o1-generation equivalent of the pro-tier pattern - same underlying model as o1, differentiated entirely by how much compute it applies per request.
| Trait | Detail |
|---|---|
| Compute posture | Uses more compute than standard o1 to think harder; rated Slowest speed in the o1 family |
| API availability | Responses API only - not available via Chat Completions; enables multi-turn model interactions before responding |
| Streaming | Not supported |
| Fine-tuning | Not supported |
The o1-Generation Pro Tier
O1 pro established the pro-tier pattern in OpenAI's o-series: the same base model as o1, with increased compute allocated to produce more reliable outputs on hard problems. This pattern was later carried forward with o3-pro. O1 pro is now deprecated per official model listings.
Benchmark Performance
Independent evaluations · Artificial Analysis
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| Model Details | |||
|---|---|---|---|
| General Info | |||
| Provider | OpenAI | Anthropic | Anthropic |
| Release Date | March 19, 2025 | September 22, 2026 | September 28, 2026 |
| Knowledge Cutoff | Oct 2023 | - | Jun 2026 |
| Context & Limits | |||
| Context Window | 200K | 1M Best Context Window | 1M Best Context Window |
| Pricing (per 1M tokens) | |||
| Input Pricing | $150 | $4 | $2 Best Input Pricing |
| Output Pricing | $600 | $20 | $10 Best Output Pricing |
| Modalities | |||
| Inputs | textimagefile | textimagefile | textimagefile |
| Outputs | text | text | text |
| Benchmarks (0-100) | |||
| Intelligence Index | 12.4 | 57.6 Best Intelligence Index | 56.0 |
| Coding Index | - | - | - |
| Agentic Index | - | - | - |
Humanity's Last Exam
Extremely difficult logical reasoning and knowledge.
Long Context Reasoning
Logical reasoning over long context windows.
SciCode Benchmark
Scientific coding and mathematical modeling.
Independent evaluation data provided by Artificial Analysis. To view the latest benchmarks and full details, visit their official site.
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