Model comparison
GPT-5.2 Pro vs GPT-6.1 Sol
GPT-5.2 Pro has enough public results to be ranked (#34); GPT-6.1 Sol does not yet, so treat this comparison as directional.
Last verified . 0 shared benchmarks.
Summary
- GPT-6.1 Sol is cheaper at $2 / $10 per million input/output tokens, against $21 / $168 for GPT-5.2 Pro.
- GPT-6.1 Sol accepts more context: 1.05M tokens versus 400K.
Side by side
| GPT-5.2 Pro | GPT-6.1 Sol | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 52.2 | 42.1 |
| Released | 2025-12-11 | 2026-09-29 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | 1.05M |
| Max output | 128K | 128K |
| Input $ / M tokens | $21 | $2 |
| Output $ / M tokens | $168 | $10 |
| Results tracked | 8 | 2 |
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Category by category
Coding Not comparable
GPT-5.2 Pro: —, GPT-6.1 Sol: 51.4
| Benchmark | GPT-5.2 Pro | GPT-6.1 Sol |
|---|---|---|
| DeepSWE | — | 75.2% |
Agentic & Tool Use Not comparable
GPT-5.2 Pro: —, GPT-6.1 Sol: 34.3
| Benchmark | GPT-5.2 Pro | GPT-6.1 Sol |
|---|---|---|
| GDP.pdf | — | 32% |
Reasoning Not comparable
GPT-5.2 Pro: 51.8 (#31), GPT-6.1 Sol: —
| Benchmark | GPT-5.2 Pro | GPT-6.1 Sol |
|---|---|---|
| ARC-AGI-2 | 54.2% | — |
| SimpleBench | 57.4% | — |
| NYT Connections (extended) | 79.3% | — |
| ARC-AGI-1 | 90.5% | — |
| Epoch Capabilities Index | 155.41 | — |
Math Not comparable
GPT-5.2 Pro: 64.8 (#23), GPT-6.1 Sol: —
| Benchmark | GPT-5.2 Pro | GPT-6.1 Sol |
|---|---|---|
| FrontierMath (Tiers 1-3) | 74% | — |
| FrontierMath Tier 4 | 46% | — |
| FrontierMath Tier 4 (v1) | 31.3% | — |
Frequently asked questions
Is GPT-5.2 Pro better than GPT-6.1 Sol?
GPT-5.2 Pro has enough public results to be ranked (#34); GPT-6.1 Sol does not yet, so treat this comparison as directional.
Which is cheaper, GPT-5.2 Pro or GPT-6.1 Sol?
GPT-6.1 Sol is cheaper. It lists at $2 per million input tokens and $10 per million output tokens; GPT-5.2 Pro lists at $21 and $168.
Which has the bigger context window?
GPT-6.1 Sol does, with 1.05M tokens against 400K.
How many benchmarks do GPT-5.2 Pro and GPT-6.1 Sol share?
0 benchmarks have published results for both models. GPT-5.2 Pro has 8 scored results on Noometry and GPT-6.1 Sol has 2.