Model family timeline
Last updated May 11, 2026
Claude 3 model releases
A source-backed timeline for the Claude 3 model family, collecting release dates, labs, access details, context windows, and major lifecycle changes.
2
Models
1
Labs
0
Open
2
Recent
Most recent in this set
2 models
Claude 3.7 Sonnet
RetiredAnthropicProprietary
Anthropic's first hybrid-reasoning Sonnet. Shut down May 11, 2026 as the 4.x line matured.
Type
—
Params
Undisc.
Context
200K
Top eval
—
Released
Feb 24, 2025
1.3y ago
—Undisc.200K ctxFeb 24, 2025
Claude 3 Opus
DeprecatedAnthropicProprietary
Highest-capability Claude 3 model, launched with Sonnet and Haiku and Anthropic's first major vision-capable Claude family.
Type
—
Params
Undisc.
Context
200K
Top eval
—
Released
Mar 4, 2024
2.3y ago
—Undisc.200K ctxMar 4, 2024