paid Engineers Entrepreneurs Product Managers
Claude Opus 4
by Anthropic
Anthropic's most capable model, known for deep reasoning, coding strength, and long agentic tasks.
5/5
Visit Claude Opus 4 - Context window
- 200K tokens (1M in beta)
- Open weights
- No
- Released
- May 2025
Pros
- + Exceptional at coding and long agentic tasks
- + Reliable instruction following
- + Extended thinking for hard problems
Cons
- − Closed weights, API-only
- − Opus tier is the most expensive option
- − Conservative on some ambiguous requests
What Is Claude Opus 4
Claude Opus 4 is the most capable model in Anthropic’s Claude family. It is particularly strong at software engineering, multi-step reasoning, and agentic workflows that run for long stretches without losing the thread.
In Practice
Opus 4 anchors tools like Claude Code and powers demanding enterprise workloads. Teams choose it when reliability on complex, long-horizon tasks matters more than raw cost, often pairing it with cheaper Claude tiers for lighter work.