Claude
Model FamilyAnthropic's family of general-purpose frontier AI models and assistants.
- Mar 14, 2023
- —
- textimage
- —
- —
- 7
Models in this family
| Model | Family | Released | Modality | Open source | API | Status |
|---|---|---|---|---|---|---|
| Claude | Sep 22, 2026 | — | — | — | active | |
| Claude | Jun 9, 2026 | — | — | — | active | |
| Claude | May 22, 2025 | — | — | — | active | |
| Claude | Jun 21, 2024 | — | — | — | legacy | |
| Claude | Mar 4, 2024 | — | — | — | legacy | |
| Claude | Jul 11, 2023 | — | — | — | legacy | |
| Claude | Mar 14, 2023 | — | — | — | legacy | |
| Claude | Mar 14, 2023 | — | — | — | legacy |
Releases
Mar 27, 2025Tracing the thoughts of a large language model publishedResearch paper
Anthropic published interpretability research tracing internal mechanisms underlying multilingual reasoning, planning, and unfaithful explanations.
Feb 3, 2025Constitutional Classifiers research publishedResearch paper
Anthropic published and tested Constitutional Classifiers, a safeguard approach designed to resist broad classes of jailbreaks.
May 23, 2024Golden Gate Claude interpretability experiment releasedResearch paper
Anthropic demonstrated feature amplification in Claude by making a discovered Golden Gate Bridge feature unusually active.
May 21, 2024Mapping the mind of a large language model publishedResearch paper
Anthropic published a large-scale mechanistic interpretability study mapping millions of concepts inside Claude 3 Sonnet.
Sep 28, 2023Claude became generally available on Amazon BedrockPartnership
Claude became available to all Amazon Bedrock customers through the Anthropic-AWS partnership.
May 9, 2023Claude's Constitution publishedResearch paper
Anthropic published the principles used to train and guide Claude's behavior through Constitutional AI.
Dec 15, 2022Constitutional AI research publishedResearch paper
Anthropic published Constitutional AI, a method for training a harmless assistant through AI feedback guided by explicit principles.