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 Gemini 2.5 Flash |  GPT-5OpenAI |  DeepSeek-V4-ProDeepSeek | o3 OpenAI | |
|---|---|---|---|---|
| Vendor | OpenAI | DeepSeek | OpenAI | |
| Family | Gemini | GPT | DeepSeek | o-series |
| Release date | — | 2025-08-07 | 2026-04-22 | 2025-04-16 |
| Context window | 1,000,000 tokens | 400,000 tokens | 1,000,000 tokens | 200,000 tokens |
| Parameters | — | — | 1.6T (49B active) | — |
| Modality | text, vision, audio | text, vision, audio | text | text, vision |
| License | proprietary | proprietary | MIT | proprietary |
| Source | proprietary | proprietary | open weights | proprietary |
| Description | — | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | 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✓
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Mistral Large 2maxMax 4 models. Remove one to add another.