Compare models
Pick up to 4models. Specs render side-by-side. Share the URL — it's stateless.
 Claude 4.5 HaikuAnthropic | Claude 4.6 Sonnet Anthropic |  GPT-5.5OpenAI | |
|---|---|---|---|
| Vendor | Anthropic | Anthropic | OpenAI |
| Family | Claude | Claude | GPT |
| Release date | 2025-10-01 | — | 2026-04-23 |
| Context window | 200,000 tokens | 200,000 tokens | 400,000 tokens |
| Parameters | — | — | — |
| Modality | text, vision | text, vision | text, vision, audio |
| License | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary |
| Description | Fast, cost-effective Claude model. | — | OpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning. |
| Links |
