A
Claude Sonnet 4.5
Model Release
Anthropic
Claude Sonnet 4.5 launched by Anthropic. Anthropic's balanced Sonnet 4.5 for production coding and agent workflows.
AI Release Timeline
Track model launches, capability updates, pricing changes, and benchmark milestones across the AI industry.
2026
A
Claude Opus 4.1
Model Release
Anthropic
Claude Opus 4.1 launched by Anthropic. Anthropic's latest Opus-class model for deep reasoning, coding, and long-form analysis.