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 DeepSeek-V3.1DeepSeek | DeepSeek-V4-Flash DeepSeek |  GPT-4.1OpenAI | GPT-5 OpenAI | |
|---|---|---|---|---|
| Vendor | DeepSeek | DeepSeek | OpenAI | OpenAI |
| Family | DeepSeek | DeepSeek | GPT | GPT |
| Release date | 2025-08-21 | 2026-04-22 | 2025-04-14 | 2025-08-07 |
| Context window | 128,000 tokens | 1,000,000 tokens | 1,000,000 tokens | 400,000 tokens |
| Parameters | 671B | 284B (13B active) | — | — |
| Modality | text | text | text, vision | text, vision, audio |
| License | MIT | MIT | proprietary | proprietary |
| Source | open weights | open weights | proprietary | proprietary |
| Description | Large MoE open-weight model. Predecessor to DeepSeek-V4. | Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE. | — | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
| 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% |
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Mistral Large 2maxMax 4 models. Remove one to add another.