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 o3OpenAI | GPT-5.5 OpenAI |  Llama 4 MaverickMeta | Llama 4 Scout Meta | |
|---|---|---|---|---|
| Vendor | OpenAI | OpenAI | Meta | Meta |
| Family | o-series | GPT | Llama | Llama |
| Release date | 2025-04-16 | 2026-04-23 | 2025-04-05 | 2025-04-05 |
| Context window | 200,000 tokens | 400,000 tokens | 1,000,000 tokens | 10,000,000 tokens |
| Parameters | — | — | 400B | 109B |
| Modality | text, vision | text, vision, audio | text, vision | text, vision |
| License | proprietary | proprietary | Llama 4 Community License | Llama 4 Community License |
| Source | proprietary | proprietary | open weights | open weights |
| Description | Reasoning-focused model in the o-series. | OpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning. | Mixture-of-experts open-weight model from Meta. | — |
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Gemini 2.5 Flashmax
Claude 4.6 SonnetmaxGPT-5.5✓
DeepSeek-V4-Flashmax
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Grok 4maxQwen3 235Bmaxo3✓GPT-4.1maxLlama 4 Scout✓Llama 4 Maverick✓Gemini 2.5 PromaxDeepSeek-R1max
Mistral Large 2maxMax 4 models. Remove one to add another.