Compare models
Pick up to 4models. Specs render side-by-side. Share the URL — it's stateless.
 Claude 4.5 HaikuAnthropic |  GPT-5OpenAI | o3 OpenAI | |
|---|---|---|---|
| Vendor | Anthropic | OpenAI | OpenAI |
| Family | Claude | GPT | o-series |
| Release date | 2025-10-01 | 2025-08-07 | 2025-04-16 |
| Context window | 200,000 tokens | 400,000 tokens | 200,000 tokens |
| Parameters | — | — | — |
| Modality | text, vision | text, vision, audio | text, vision |
| License | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary |
| Description | Fast, cost-effective Claude model. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | Reasoning-focused model in the o-series. |
| Links |
