Back to events
Model releaseModerate global significanceConfirmed confidence

Anthropic releases Claude 1

Anthropic releases Claude 1, trained with Constitutional AI to emphasize safe and harmless outputs.

Event details

Anthropic released Claude 1 on March 14, 2023. The parameter count is unknown, the model is closed source and the entry classifies it as an autoregressive Transformer; Anthropic's Claude release record is the primary source.

Why it matters

A model release or availability milestone with a documented capability or access condition.

62/100Global significance score. Regional effects are recorded only when the evidence supports a meaningful difference.

Access notes

Available through Anthropic's product and API access channels.