Model comparison
GPT-5.2 Pro vs o1-pro
GPT-5.2 Pro is the stronger model overall, scoring 52.2 to 31.2 on the Noometry Index.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. GPT-5.2 Pro scores higher in 1 category and o1-pro in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.2 Pro leads 51.8 to 20.2.
- The biggest single-benchmark swing is ARC-AGI-1: 90.5% for GPT-5.2 Pro and 23.3% for o1-pro.
- GPT-5.2 Pro is cheaper at $21 / $168 per million input/output tokens, against $150 / $600 for o1-pro.
- GPT-5.2 Pro accepts more context: 400K tokens versus 200K.
Side by side
| GPT-5.2 Pro | o1-pro | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 52.2 | 31.2 |
| Released | 2025-12-11 | 2025-03-19 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | 200K |
| Max output | 128K | 100K |
| Input $ / M tokens | $21 | $150 |
| Output $ / M tokens | $168 | $600 |
| Results tracked | 8 | 3 |
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Category by category
Reasoning GPT-5.2 Pro leads
GPT-5.2 Pro: 51.8 (#31), o1-pro: 20.2 (#223)
| Benchmark | GPT-5.2 Pro | o1-pro |
|---|---|---|
| ARC-AGI-1 | 90.5% | 23.3% |
| ARC-AGI-2 | 54.2% | — |
| SimpleBench | 57.4% | — |
| NYT Connections (extended) | 79.3% | — |
| EnigmaEval | — | 6.1% |
| Epoch Capabilities Index | 155.41 | — |
Math Not comparable
GPT-5.2 Pro: 64.8 (#23), o1-pro: —
| Benchmark | GPT-5.2 Pro | o1-pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 74% | — |
| FrontierMath Tier 4 | 46% | — |
| FrontierMath Tier 4 (v1) | 31.3% | — |
Knowledge Not comparable
GPT-5.2 Pro: —, o1-pro: 29.3 (#227)
| Benchmark | GPT-5.2 Pro | o1-pro |
|---|---|---|
| Humanity's Last Exam | — | 8.1% |
Frequently asked questions
Is GPT-5.2 Pro better than o1-pro?
GPT-5.2 Pro is the stronger model overall, scoring 52.2 to 31.2 on the Noometry Index.
Which is cheaper, GPT-5.2 Pro or o1-pro?
GPT-5.2 Pro is cheaper. It lists at $21 per million input tokens and $168 per million output tokens; o1-pro lists at $150 and $600.
Which has the bigger context window?
GPT-5.2 Pro does, with 400K tokens against 200K.
How many benchmarks do GPT-5.2 Pro and o1-pro share?
1 benchmark has published results for both models. GPT-5.2 Pro has 8 scored results on Noometry and o1-pro has 3.