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 o3OpenAI |  Grok 4xAI |  Llama 4 MaverickMeta | GPT-5 OpenAI | |
|---|---|---|---|---|
| Vendor | OpenAI | xAI | Meta | OpenAI |
| Family | o-series | Grok | Llama | GPT |
| Release date | 2025-04-16 | 2025-07-09 | 2025-04-05 | 2025-08-07 |
| Context window | 200,000 tokens | 256,000 tokens | 1,000,000 tokens | 400,000 tokens |
| Parameters | — | — | 400B | — |
| Modality | text, vision | text | text, vision | text, vision, audio |
| License | proprietary | proprietary | Llama 4 Community License | proprietary |
| Source | proprietary | proprietary | open weights | proprietary |
| Description | Reasoning-focused model in the o-series. | — | Mixture-of-experts open-weight model from Meta. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | — | 82.8% | 80.5% | 85.1% |
| GPQA-D | 87.7% | 87.5% | — | 87.3% |
| HumanEval | — | — | — | 95.2% |
| Aider | — | 72.5% | — | 85.4% |
| AIME-25 | 88.9% | 86.1% | — | 91.0% |
| LiveCB | — | 65.3% | — | 74.5% |
| MMMU | — | — | 68.5% | 74.1% |
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Claude 4.8 Opusmax
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