Anthropic
US · founded 2021 · www.anthropic.com
AI safety company founded by former OpenAI staff; builds the Claude family.
Releases (25)
| Model | Released | Type | Arch | Params (B) | Open | Status |
|---|---|---|---|---|---|---|
| Claude Sonnet 5 | Jul 9, 2026 | Multimodal | Unknown | Not disclosed | Closed | Active |
| Claude Opus 5 | Feb 24, 2026 | Multimodal | Unknown | Not disclosed | Closed | Active |
| Claude Opus 4.5 | Nov 24, 2025 | Multimodal | Unknown | Not disclosed | Closed | Active |
| Claude Opus 4.5 | Nov 24, 2025 | Multimodal | Dense | Not disclosed | Closed | Active |
| Claude Haiku 4.5 | Oct 15, 2025 | Multimodal | Unknown | Not disclosed | Closed | Active |
| Claude Haiku 4.5 | Oct 15, 2025 | Text LLM | Dense | Not disclosed | Closed | Active |
| Claude Sonnet 4.5 | Sep 29, 2025 | Text LLM | Unknown | Not disclosed | Closed | Active |
| Claude Sonnet 4.5 | Sep 29, 2025 | Multimodal | Dense | Not disclosed | Closed | Active |
| Claude Opus 4.1 | Aug 5, 2025 | Multimodal | Dense | Not disclosed | Closed | Active |
| Claude Sonnet 4 | May 22, 2025 | Multimodal | Dense | Not disclosed | Closed | Active |
| Claude Opus 4 | May 22, 2025 | Multimodal | Dense | Not disclosed | Closed | Active |
| Claude 3.7 Sonnet | Feb 24, 2025 | Multimodal | Dense | Not disclosed | Closed | Active |
| Claude 3.5 Haiku | Nov 4, 2024 | Text LLM | Dense | Not disclosed | Closed | Active |
| Claude 3.5 Sonnet (new) | Oct 22, 2024 | Multimodal | Dense | Not disclosed | Closed | Deprecated |
| Claude 3.5 Sonnet | Jun 20, 2024 | Multimodal | Dense | Not disclosed | Closed | Deprecated |
| Claude 3 Haiku | Mar 13, 2024 | Multimodal | Dense | Not disclosed | Closed | Active |
| Claude 3 Opus | Mar 4, 2024 | Multimodal | Dense | Not disclosed | Closed | Active |
| Claude 3 Sonnet | Feb 29, 2024 | Multimodal | Dense | Not disclosed | Closed | Deprecated |
| Claude 2.1 | Nov 21, 2023 | Text LLM | Dense | Not disclosed | Closed | Retired |
| Claude Instant 1.2 | Aug 9, 2023 | Text LLM | Dense | Not disclosed | Closed | Retired |
| Claude 2.0 | Jul 11, 2023 | Text LLM | Dense | Not disclosed | Closed | Retired |
| Claude 2 | Jul 11, 2023 | Text LLM | Dense | Not disclosed | Closed | Retired |
| Claude 1 100K | May 11, 2023 | Text LLM | Dense | Not disclosed | Closed | Retired |
| Claude Instant 1 | Mar 14, 2023 | Text LLM | Dense | Not disclosed | Closed | Retired |
| Claude 1 | Mar 14, 2023 | Text LLM | Dense | Not disclosed | Closed | Retired |