Llama 4 Maverick vs o3
Direct spec comparison of Llama 4 Maverick (from Meta) and o3 (from OpenAI). Want a 3- or 4-way comparison? Open the multi-model tool →
 Llama 4 MaverickMeta |  o3OpenAI | |
|---|---|---|
| Vendor | Meta | OpenAI |
| Family | Llama | o-series |
| Release date | 2025-04-05 | 2025-04-16 |
| Context window | 1,000,000 tokens | 200,000 tokens |
| Parameters | 400B | — |
| Modality | text, vision | text, vision |
| License | Llama 4 Community License | proprietary |
| Source | open weights | proprietary |
| Description | Mixture-of-experts open-weight model from Meta. | Reasoning-focused model in the o-series. |
| Links |
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