GPT-5 vs GPT-6.1 Sol
Both have similar output pricing, while GPT-6.1 Sol offers a larger context window. Choose GPT-5 or GPT-6.1 Sol based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5 | GPT-6.1 Sol |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / 1M tokens | $1.25 | $2.00 |
| Output / 1M tokens | $10.00 | $10.00 |
| Context window | 400K | 1.1M |
| Parameters | — | — |
| Open weights | No | — |
| Released | Aug 2025 | — |
| SWE-bench Verified score | 75.6 | — |
| Aider Polyglot score | 88.0 | — |
| LMArena (Chatbot Arena) Elo score | 1406 | 1448 |
| LMArena WebDev Elo score | 1417 | 1760 |
| LMArena Vision Elo score | 1208 | 1288 |
| GPQA Diamond score | 86.2 | 95.4 |
| FrontierMath score | 32.4 | — |
| Epoch Capabilities Index score | 150 | 166 |
FAQ
Is GPT-5 or GPT-6.1 Sol cheaper?
GPT-5 and GPT-6.1 Sol have comparable output pricing.
Which has the larger context window, GPT-5 or GPT-6.1 Sol?
GPT-6.1 Sol has the larger context window (1.1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.