Compare models
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 GPT-4.1OpenAI |  DeepSeek-V4-FlashDeepSeek | GPT-5 OpenAI | |
|---|---|---|---|
| Vendor | OpenAI | DeepSeek | OpenAI |
| Family | GPT | DeepSeek | GPT |
| Release date | 2025-04-14 | 2026-04-22 | 2025-08-07 |
| Context window | 1,000,000 tokens | 1,000,000 tokens | 400,000 tokens |
| Parameters | — | 284B (13B active) | — |
| Modality | text, vision | text | text, vision, audio |
| License | proprietary | MIT | proprietary |
| Source | proprietary | open weights | proprietary |
| Description | — | 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 Superseded by GPT-5.5 in April 2026.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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