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 DeepSeek-R1DeepSeek | DeepSeek-V4-Flash DeepSeek |  GPT-5OpenAI | GPT-4.1 OpenAI | |
|---|---|---|---|---|
| Vendor | DeepSeek | DeepSeek | OpenAI | OpenAI |
| Family | DeepSeek | DeepSeek | GPT | GPT |
| Release date | 2025-01-20 | 2026-04-22 | 2025-08-07 | 2025-04-14 |
| Context window | 128,000 tokens | 1,000,000 tokens | 400,000 tokens | 1,000,000 tokens |
| Parameters | 671B | 284B (13B active) | — | — |
| Modality | text | text | text, vision, audio | text, vision |
| License | MIT | MIT | proprietary | proprietary |
| Source | open weights | open weights | proprietary | proprietary |
| Description | Reasoning-focused open-weight model. | 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 Superseded by GPT-5.5 in April 2026. | — |
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Mistral Large 2maxMax 4 models. Remove one to add another.