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 GPT-5OpenAI | o3 OpenAI | GPT-5.6 Sol OpenAI | |
|---|---|---|---|
| Vendor | OpenAI | OpenAI | OpenAI |
| Family | GPT | o-series | GPT |
| Release date | 2025-08-07 | 2025-04-16 | 2026-06-26 |
| Context window | 400,000 tokens | 200,000 tokens | — |
| Parameters | — | — | — |
| Modality | text, vision, audio | text, vision | text, vision, audio |
| License | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary |
| Description | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | Reasoning-focused model in the o-series. | 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% | 87.7% | — |
| HumanEval | 95.2% | — | — |
| Aider | 85.4% | — | — |
| AIME-25 | 91.0% | 88.9% | — |
| LiveCB | 74.5% | — | — |
| MMMU | 74.1% | — | — |
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GPT-5.6 Sol✓
Claude 4.8 Opus+
Qwen3.7-Max+
Gemini 3.5 Flash+Gemini 3.5+Gemini Omni+GPT-5.5+
DeepSeek-V4-Flash+Gemini 3 Pro+DeepSeek-V4-Pro+Qwen3.6-27B+Claude 4.7 Opus+Claude 4.6 Sonnet+Claude 4.5 Haiku+DeepSeek-V3.1+GPT-5 Pro+GPT-5✓
Grok 4+Gemini 2.5 Flash+Qwen3 235B+o3✓GPT-4.1+
Llama 4 Scout+Llama 4 Maverick+Gemini 2.5 Pro+DeepSeek-R1+
Mistral Large 2+