GPT-5 vs GPT-5.6 Sol
Direct spec comparison of GPT-5 (from OpenAI) and GPT-5.6 Sol (from OpenAI). Want a 3- or 4-way comparison? Open the multi-model tool →
 GPT-5OpenAI | GPT-5.6 Sol OpenAI | |
|---|---|---|
| Vendor | OpenAI | OpenAI |
| Family | GPT | GPT |
| Release date | 2025-08-07 | 2026-06-26 |
| Context window | 400,000 tokens | — |
| Parameters | — | — |
| Modality | text, vision, audio | text, vision, audio |
| License | proprietary | proprietary |
| Source | proprietary | proprietary |
| Description | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | Flagship of OpenAI's GPT-5.6 three-model suite (Sol / Terra / Luna), released as a limited preview. Strong gains in coding, cybersecurity, biology, and long-horizon agentic work. Pricing: $5 / $30 per million input/output tokens. |
| Links | ||
| Benchmarks | ||
| MMLU-Pro | 85.1% | — |
| GPQA-D | 87.3% | — |
| HumanEval | 95.2% | — |
| Aider | 85.4% | — |
| AIME-25 | 91.0% | — |
| LiveCB | 74.5% | — |
| MMMU | 74.1% | — |
More like this
Looking for a different head-to-head? Build your own comparison on the multi-model tool.
Or see all GPT-5 details / GPT-5.6 Sol details.