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 GPT-4.1OpenAI |  DeepSeek-R1DeepSeek | GPT-5.5 OpenAI | |
|---|---|---|---|
| Vendor | OpenAI | DeepSeek | OpenAI |
| Family | GPT | DeepSeek | GPT |
| Release date | 2025-04-14 | 2025-01-20 | 2026-04-23 |
| Context window | 1,000,000 tokens | 128,000 tokens | 400,000 tokens |
| Parameters | — | 671B | — |
| Modality | text, vision | text | text, vision, audio |
| License | proprietary | MIT | proprietary |
| Source | proprietary | open weights | proprietary |
| Description | — | Reasoning-focused open-weight model. | 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. |
| Links | |||
| Benchmarks | |||
| MMLU-Pro | — | — | 87.6% |
| GPQA-D | — | — | 89.4% |
| HumanEval | — | — | 96.8% |
| Aider | — | — | 89.7% |
| AIME-25 | — | 79.8% | 94.2% |
| LiveCB | — | — | 78.9% |
| MMMU | — | — | 78.4% |
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Claude 4.8 Opus+
Qwen3.7-Max+
Gemini 3.5+Gemini Omni+GPT-5.5✓Qwen3.6-27B+DeepSeek-V4-Flash+DeepSeek-V4-Pro+Gemini 3 Pro+Claude 4.7 Opus+Claude 4.6 Sonnet+Claude 4.5 Haiku+DeepSeek-V3.1+GPT-5+
Grok 4+Gemini 2.5 Flash+Qwen3 235B+o3+GPT-4.1✓
Llama 4 Scout+Llama 4 Maverick+Gemini 2.5 Pro+DeepSeek-R1✓
Mistral Large 2+