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 GPT-5OpenAI |  DeepSeek-R1DeepSeek | o3 OpenAI | DeepSeek-V3.1 DeepSeek | |
|---|---|---|---|---|
| Vendor | OpenAI | DeepSeek | OpenAI | DeepSeek |
| Family | GPT | DeepSeek | o-series | DeepSeek |
| Release date | 2025-08-07 | 2025-01-20 | 2025-04-16 | 2025-08-21 |
| Context window | 400,000 tokens | 128,000 tokens | 200,000 tokens | 128,000 tokens |
| Parameters | — | 671B | — | 671B |
| Modality | text, vision, audio | text | text, vision | text |
| License | proprietary | MIT | proprietary | MIT |
| Source | proprietary | open weights | proprietary | open weights |
| Description | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | Reasoning-focused open-weight model. | Reasoning-focused model in the o-series. | Large MoE open-weight model. Predecessor to DeepSeek-V4. |
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Gemini 2.5 Flashmax
Claude 4.6 SonnetmaxGPT-5.5maxDeepSeek-V4-Flashmax
Qwen3.6-27BmaxGemini 3 PromaxDeepSeek-V4-PromaxClaude 4.7 OpusmaxClaude 4.5 HaikumaxDeepSeek-V3.1✓GPT-5✓
Grok 4maxQwen3 235Bmaxo3✓GPT-4.1max
Llama 4 ScoutmaxLlama 4 MaverickmaxGemini 2.5 PromaxDeepSeek-R1✓
Mistral Large 2maxMax 4 models. Remove one to add another.