Claude 4 9 versions
By Anthropic
| Model | Released | Type | Arch | Params (B) | Context | Open | Status |
|---|---|---|---|---|---|---|---|
| Claude Opus 4 | May 22, 2025 | Multimodal | Dense | Not disclosed | 200K | Closed | Active |
| Claude Sonnet 4 | May 22, 2025 | Multimodal | Dense | Not disclosed | 200K | Closed | Active |
| Claude Opus 4.1 | Aug 5, 2025 | Multimodal | Dense | Not disclosed | 200K | Closed | Active |
| Claude Sonnet 4.5 | Sep 29, 2025 | Multimodal | Dense | Not disclosed | 200K | Closed | Active |
| Claude Sonnet 4.5 | Sep 29, 2025 | Text LLM | Unknown | Not disclosed | 200K | Closed | Active |
| Claude Haiku 4.5 | Oct 15, 2025 | Text LLM | Dense | Not disclosed | 200K | Closed | Active |
| Claude Haiku 4.5 | Oct 15, 2025 | Multimodal | Unknown | Not disclosed | 200K | Closed | Active |
| Claude Opus 4.5 | Nov 24, 2025 | Multimodal | Dense | Not disclosed | 200K | Closed | Active |
| Claude Opus 4.5 | Nov 24, 2025 | Multimodal | Unknown | Not disclosed | 200K | Closed | Active |