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 o3OpenAI | GPT-5.6 Sol OpenAI |  DeepSeek-V3.1DeepSeek |  Gemini Omni | |
|---|---|---|---|---|
| Vendor | OpenAI | OpenAI | DeepSeek | |
| Family | o-series | GPT | DeepSeek | Gemini |
| Release date | 2025-04-16 | 2026-06-26 | 2025-08-21 | 2026-05-20 |
| Context window | 200,000 tokens | — | 128,000 tokens | 1,000,000 tokens |
| Parameters | — | — | 671B | — |
| Modality | text, vision | text, vision, audio | text | text, vision, audio, video |
| License | proprietary | proprietary | MIT | proprietary |
| Source | proprietary | proprietary | open weights | proprietary |
| Description | 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. | Large MoE open-weight model. Predecessor to DeepSeek-V4. | Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model. |
| Links | ||||
| Benchmarks | ||||
| GPQA-D | 87.7% | — | — | — |
| AIME-25 | 88.9% | — | — | — |
| MMMU | — | — | — | 82.5% |
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GPT-5.6 Sol✓
Claude 4.8 Opusmax
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Mistral Large 2maxMax 4 models. Remove one to add another.