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 Gemini 2.5 Flash | Gemini 2.5 Pro |  DeepSeek-V4-ProDeepSeek |  o3OpenAI | |
|---|---|---|---|---|
| Vendor | DeepSeek | OpenAI | ||
| Family | Gemini | Gemini | DeepSeek | o-series |
| Release date | — | 2025-03-25 | 2026-04-22 | 2025-04-16 |
| Context window | 1,000,000 tokens | 2,000,000 tokens | 1,000,000 tokens | 200,000 tokens |
| Parameters | — | — | 1.6T (49B active) | — |
| Modality | text, vision, audio | text, vision, audio, video | text | text, vision |
| License | proprietary | proprietary | MIT | proprietary |
| Source | proprietary | proprietary | open weights | proprietary |
| Description | — | Predecessor to Gemini 3 Pro. | 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. | Reasoning-focused model in the o-series. |
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Gemini 2.5 Flash✓
Claude 4.6 SonnetmaxGPT-5.5maxDeepSeek-V4-Flashmax
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Mistral Large 2maxMax 4 models. Remove one to add another.