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 Gemini 3.5 |  Grok 4xAI |  GPT-5.6 SolOpenAI | o3 OpenAI | |
|---|---|---|---|---|
| Vendor | xAI | OpenAI | OpenAI | |
| Family | Gemini | Grok | GPT | o-series |
| Release date | 2026-05-20 | 2025-07-09 | 2026-06-26 | 2025-04-16 |
| Context window | 2,000,000 tokens | 256,000 tokens | — | 200,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision, audio, video | text | text, vision, audio | text, vision |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 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. | Reasoning-focused model in the o-series. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | 88.9% | 82.8% | — | — |
| GPQA-D | 91.2% | 87.5% | — | 87.7% |
| Aider | — | 72.5% | — | — |
| AIME-25 | 96.1% | 86.1% | — | 88.9% |
| LiveCB | — | 65.3% | — | — |
| MMMU | 86.0% | — | — | — |
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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.