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 o3OpenAI |  DeepSeek-V4-ProDeepSeek | GPT-4.1 OpenAI |  Qwen3 235BAlibaba | |
|---|---|---|---|---|
| Vendor | OpenAI | DeepSeek | OpenAI | Alibaba |
| Family | o-series | DeepSeek | GPT | Qwen |
| Release date | 2025-04-16 | 2026-04-22 | 2025-04-14 | 2025-04-29 |
| Context window | 200,000 tokens | 1,000,000 tokens | 1,000,000 tokens | 128,000 tokens |
| Parameters | — | 1.6T (49B active) | — | 235B |
| Modality | text, vision | text | text, vision | text |
| License | proprietary | MIT | proprietary | Apache-2.0 |
| Source | proprietary | open weights | proprietary | open weights |
| Description | Reasoning-focused model in the o-series. | DeepSeek's flagship open-weight MoE. 1.6T parameters with 49B activated, 1M-token context, and a hybrid attention scheme (CSA + HCA) that delivers long-context inference at ~27% of V3.2's FLOPs. | — | Predecessor to the Qwen3.6 family. |
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