Release dates
— Anthropic launched Claude Opus 4 and Claude Sonnet 4 together. ↗
Claude Opus 4
The Claude 4 flagship, focused on long-running coding, complex agents, and sustained multi-hour execution.
MODEL NUMBER072
- First public date
- 2025-05-22
- Organization
- Anthropic
- Family
- Claude
01
Specifications
Only published specifications are shown.
- Context
- 200,000 tokens
- Input modalities
- Text · Image
- Open weights
- No
- Status
- Legacy
02
Overview
PreviousClaude 3.7 Sonnet— · 200K ctx
CurrentClaude Opus 4— · 200K ctx
04
Architecture & capabilities
Model capabilities
Long-horizon agentCodingExtended thinkingTool use
05
Release history
Anthropic launched Claude Opus 4 and Claude Sonnet 4 together.
View source06
Related models
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07
Sources
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