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 o3OpenAI |  Gemini 2.5 Pro |  Claude 4.6 SonnetAnthropic | Gemini 3 Pro | |
|---|---|---|---|---|
| Vendor | OpenAI | Anthropic | ||
| Family | o-series | Gemini | Claude | Gemini |
| Release date | 2025-04-16 | 2025-03-25 | — | 2026-04-22 |
| Context window | 200,000 tokens | 2,000,000 tokens | 200,000 tokens | 2,000,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision | text, vision, audio, video | text, vision | text, vision, audio, video |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | Reasoning-focused model in the o-series. | Predecessor to Gemini 3 Pro. | — | Google DeepMind's flagship multimodal model. Best-in-class for multimodal understanding and agentic / vibe coding workflows. A "Deep Think" reasoning mode is available to AI Ultra subscribers. |
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Gemini 2.5 FlashmaxClaude 4.6 Sonnet✓GPT-5.5max
DeepSeek-V4-Flashmax
Qwen3.6-27BmaxGemini 3 Pro✓DeepSeek-V4-PromaxClaude 4.7 OpusmaxClaude 4.5 HaikumaxDeepSeek-V3.1maxGPT-5max
Grok 4maxQwen3 235Bmaxo3✓GPT-4.1max
Llama 4 ScoutmaxLlama 4 MaverickmaxGemini 2.5 Pro✓DeepSeek-R1max
Mistral Large 2maxMax 4 models. Remove one to add another.