A
Claude Sonnet 4.5
API Release
Anthropic
API endpoint `claude-sonnet-4-5` available for Claude Sonnet 4.5.
AI Release Timeline
Track model launches, capability updates, pricing changes, and benchmark milestones across the AI industry.
2026
A
Claude Opus 4.1
API Release
Anthropic
API endpoint `claude-opus-4-1` available for Claude Opus 4.1.
2025
A
Claude 4 Sonnet
API Release
Anthropic
API endpoint `claude-sonnet-4-20250514` available for Claude 4 Sonnet.
A
Claude 4 Opus
API Release
Anthropic
API endpoint `claude-opus-4-20250514` available for Claude 4 Opus.
A
Claude 4 Haiku
API Release
Anthropic
API endpoint `claude-haiku-4-20250514` available for Claude 4 Haiku.
A
Claude 3.7 Sonnet
API Release
Anthropic
API endpoint `claude-3-7-sonnet-20250219` available for Claude 3.7 Sonnet.
2024
A
Claude 3.5 Haiku
API Release
Anthropic
API endpoint `claude-3-5-haiku-20241022` available for Claude 3.5 Haiku.
A
Claude 3.5 Sonnet
API Release
Anthropic
API endpoint `claude-3-5-sonnet-20241022` available for Claude 3.5 Sonnet.
A
Claude 3 Opus
API Release
Anthropic
API endpoint `claude-3-opus-20240229` available for Claude 3 Opus.