GPT-6 Astra vs GPT-6 Sol
GPT-6 Astra (OpenAI) and GPT-6 Sol (OpenAI) compared on price, context window, speed and independent benchmarks. GPT-6 Astra scores higher on the Artificial Analysis Intelligence Index (52.7 vs 47.5), while GPT-6 Sol is 5.0× cheaper on a blended basis. Pick GPT-6 Astra for the hardest tasks and GPT-6 Sol when cost dominates.
| GPT-6 Astra | GPT-6 Sol | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input $/1M | $10.0 | $2.00 |
| Output $/1M | $50.0 | $10.0 |
| Blended $/1M (3:1) | $20.0 | $4.00 |
| Cached input $/1M | $1.00 | $0.20 |
| Context window | 1.1M | 1.1M |
| Knowledge cutoff | 2026-04 | 2026-04 |
| License | proprietary | proprietary |
| Speed (tok/s) | 58 | 107 |
| Artificial Analysis Intelligence Index | 52.7 | 47.5 |
| LMArena Elo | 1444 | — |
| GPQA Diamond | 96.1% | — |
| Humanity's Last Exam | 54.7% | 47.9% |