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 DeepSeek-V4-FlashDeepSeek |  o3OpenAI | GPT-5.5 OpenAI |  Gemini 2.5 Pro | |
|---|---|---|---|---|
| Vendor | DeepSeek | OpenAI | OpenAI | |
| Family | DeepSeek | o-series | GPT | Gemini |
| Release date | 2026-04-22 | 2025-04-16 | 2026-04-23 | 2025-03-25 |
| Context window | 1,000,000 tokens | 200,000 tokens | 400,000 tokens | 2,000,000 tokens |
| Parameters | 284B (13B active) | — | — | — |
| Modality | text | text, vision | text, vision, audio | text, vision, audio, video |
| License | MIT | proprietary | proprietary | proprietary |
| Source | open weights | proprietary | proprietary | proprietary |
| Description | Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE. | Reasoning-focused model in the o-series. | OpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning. | Predecessor to Gemini 3 Pro. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | — | — | 87.6% | 84.1% |
| GPQA-D | — | 87.7% | 89.4% | 84.0% |
| HumanEval | — | — | 96.8% | — |
| Aider | — | — | 89.7% | — |
| AIME-25 | — | 88.9% | 94.2% | — |
| LiveCB | — | — | 78.9% | — |
| MMMU | — | — | 78.4% | 72.4% |
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Qwen3.7-MaxmaxGemini 3.5maxGemini OmnimaxGPT-5.5✓Qwen3.6-27BmaxDeepSeek-V4-Flash✓DeepSeek-V4-PromaxGemini 3 PromaxClaude 4.7 OpusmaxClaude 4.6 SonnetmaxClaude 4.5 HaikumaxDeepSeek-V3.1maxGPT-5max
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