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 Gemini 3.5 |  GPT-5OpenAI |  DeepSeek-R1DeepSeek | DeepSeek-V3.1 DeepSeek | |
|---|---|---|---|---|
| Vendor | OpenAI | DeepSeek | DeepSeek | |
| Family | Gemini | GPT | DeepSeek | DeepSeek |
| Release date | 2026-05-20 | 2025-08-07 | 2025-01-20 | 2025-08-21 |
| Context window | 2,000,000 tokens | 400,000 tokens | 128,000 tokens | 128,000 tokens |
| Parameters | — | — | 671B | 671B |
| Modality | text, vision, audio, video | text, vision, audio | text | text |
| License | proprietary | proprietary | MIT | MIT |
| Source | proprietary | proprietary | open weights | open weights |
| Description | Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | Reasoning-focused open-weight model. | Large MoE open-weight model. Predecessor to DeepSeek-V4. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | 88.9% | 85.1% | — | — |
| GPQA-D | 91.2% | 87.3% | — | — |
| HumanEval | — | 95.2% | — | — |
| Aider | — | 85.4% | — | — |
| AIME-25 | 96.1% | 91.0% | 79.8% | — |
| LiveCB | — | 74.5% | — | — |
| MMMU | 86.0% | 74.1% | — | — |
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