Compare models
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 GPT-5OpenAI |  Llama 4 MaverickMeta |  Grok 4xAI | |
|---|---|---|---|
| Vendor | OpenAI | Meta | xAI |
| Family | GPT | Llama | Grok |
| Release date | 2025-08-07 | 2025-04-05 | 2025-07-09 |
| Context window | 400,000 tokens | 1,000,000 tokens | 256,000 tokens |
| Parameters | — | 400B | — |
| Modality | text, vision, audio | text, vision | text |
| License | proprietary | Llama 4 Community License | proprietary |
| Source | proprietary | open weights | proprietary |
| Description | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | Mixture-of-experts open-weight model from Meta. | — |
| Links |
