A
Claude Sonnet 4.5
Reasoning Model
Anthropic
Claude Sonnet 4.5 introduces extended reasoning and chain-of-thought capabilities.
AI Release Timeline
Track model launches, capability updates, pricing changes, and benchmark milestones across the AI industry.
2026
A
Claude Opus 4.1
Reasoning Model
Anthropic
Claude Opus 4.1 introduces extended reasoning and chain-of-thought capabilities.
2025
A
Claude 4 Sonnet
Reasoning Model
Anthropic
Claude 4 Sonnet introduces extended reasoning and chain-of-thought capabilities.
A
Claude 4 Opus
Reasoning Model
Anthropic
Claude 4 Opus introduces extended reasoning and chain-of-thought capabilities.
A
Claude 3.7 Sonnet
Reasoning Model
Anthropic
Claude 3.7 Sonnet introduces extended reasoning and chain-of-thought capabilities.