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 DeepSeek-V3.1DeepSeek |  Qwen3.6-27BAlibaba |  GPT-5OpenAI | o3 OpenAI | |
|---|---|---|---|---|
| Vendor | DeepSeek | Alibaba | OpenAI | OpenAI |
| Family | DeepSeek | Qwen | GPT | o-series |
| Release date | 2025-08-21 | 2026-04-22 | 2025-08-07 | 2025-04-16 |
| Context window | 128,000 tokens | 262,144 tokens | 400,000 tokens | 200,000 tokens |
| Parameters | 671B | 27B (dense) | — | — |
| Modality | text | text, vision, video | text, vision, audio | text, vision |
| License | MIT | Apache-2.0 | proprietary | proprietary |
| Source | open weights | open weights | proprietary | proprietary |
| Description | Large MoE open-weight model. Predecessor to DeepSeek-V4. | Alibaba's first dense open-weight in the 3.6 family. Strong agentic-coding scores (77.2 SWE-bench Verified, matching Claude 4.5 Opus on Terminal-Bench 2.0). Supports 201 languages and multimodal text/image/video input. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | Reasoning-focused model in the o-series. |
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Mistral Large 2maxMax 4 models. Remove one to add another.