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OpenAI | xAI | Anthropic | Meta | |
|---|---|---|---|---|
| Vendor | OpenAI | xAI | Anthropic | Meta |
| Family | o-series | Grok | Claude | Llama |
| Release date | 2025-04-16 | 2025-07-09 | — | 2025-04-05 |
| Context window | 200,000 tokens | 256,000 tokens | 200,000 tokens | 1,000,000 tokens |
| Parameters | — | — | — | 400B |
| Modality | text, vision | text | text, vision | text, vision |
| License | proprietary | proprietary | proprietary | Llama 4 Community License |
| Source | proprietary | proprietary | proprietary | open weights |
| Description | Reasoning-focused model in the o-series. | — | — | Mixture-of-experts open-weight model from Meta. |
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