Compare models
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 Claude 4.5 HaikuAnthropic |  o3OpenAI | |
|---|---|---|
| Vendor | Anthropic | OpenAI |
| Family | Claude | o-series |
| Release date | 2025-10-01 | 2025-04-16 |
| Context window | 200,000 tokens | 200,000 tokens |
| Parameters | — | — |
| Modality | text, vision | text, vision |
| License | proprietary | proprietary |
| Source | proprietary | proprietary |
| Description | Fast, cost-effective Claude model. | Reasoning-focused model in the o-series. |
| Links |
