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 Claude 4.7 OpusAnthropic |  GPT-5.5OpenAI | o3 OpenAI |  Llama 4 MaverickMeta | |
|---|---|---|---|---|
| Vendor | Anthropic | OpenAI | OpenAI | Meta |
| Family | Claude | GPT | o-series | Llama |
| Release date | 2026-04-16 | 2026-04-23 | 2025-04-16 | 2025-04-05 |
| Context window | 1,000,000 tokens | 400,000 tokens | 200,000 tokens | 1,000,000 tokens |
| Parameters | — | — | — | 400B |
| Modality | text, vision | text, vision, audio | text, vision | text, vision |
| License | proprietary | proprietary | proprietary | Llama 4 Community License |
| Source | proprietary | proprietary | proprietary | open weights |
| Description | Anthropic's most capable model, optimized for complex reasoning and coding. Improved software engineering, long-running coding tasks, and higher-resolution vision over Claude 4.6. | 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. | Reasoning-focused model in the o-series. | Mixture-of-experts open-weight model from Meta. |
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