Compare models
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 DeepSeek-V4-FlashDeepSeek | DeepSeek-R1 DeepSeek |  GPT-5OpenAI | |
|---|---|---|---|
| Vendor | DeepSeek | DeepSeek | OpenAI |
| Family | DeepSeek | DeepSeek | GPT |
| Release date | 2026-04-22 | 2025-01-20 | 2025-08-07 |
| Context window | 1,000,000 tokens | 128,000 tokens | 400,000 tokens |
| Parameters | 284B (13B active) | 671B | — |
| Modality | text | text | text, vision, audio |
| License | MIT | MIT | proprietary |
| Source | open weights | open weights | proprietary |
| Description | Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE. | Reasoning-focused open-weight model. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
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