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 Grok 4xAI |  GPT-5OpenAI |  Gemini 3 Pro | o3 OpenAI | |
|---|---|---|---|---|
| Vendor | xAI | OpenAI | OpenAI | |
| Family | Grok | GPT | Gemini | o-series |
| Release date | 2025-07-09 | 2025-08-07 | 2026-04-22 | 2025-04-16 |
| Context window | 256,000 tokens | 400,000 tokens | 2,000,000 tokens | 200,000 tokens |
| Parameters | — | — | — | — |
| Modality | text | text, vision, audio | text, vision, audio, video | text, vision |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | — | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | 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. | Reasoning-focused model in the o-series. |
| Links |
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Gemini 2.5 Flashmax
Claude 4.6 SonnetmaxGPT-5.5max
DeepSeek-V4-Flashmax
Qwen3.6-27BmaxGemini 3 Pro✓DeepSeek-V4-PromaxClaude 4.7 OpusmaxClaude 4.5 HaikumaxDeepSeek-V3.1maxGPT-5✓Grok 4✓Qwen3 235Bmaxo3✓GPT-4.1max
Llama 4 ScoutmaxLlama 4 MaverickmaxGemini 2.5 PromaxDeepSeek-R1max
Mistral Large 2maxMax 4 models. Remove one to add another.