Claude Opus 4 (June) vs Claude Opus 4 (May): AI Model Comparison
Compare Claude Opus 4 June vs May 2025. Coding, reasoning, tool use benchmarks analyzed.
The June release improves tool use reliability and coding workflows. Recommended upgrade for agentic and coding-heavy use cases.
Detailed Comparison
A side-by-side analysis of key factors to help you make the right choice.
| Factor | Claude Opus 4 (June 2025)Recommended | Claude Opus 4 (May 2025) | Winner |
|---|---|---|---|
| Coding Performance | Improved SWE-bench scores, better multi-step code generation | Strong baseline coding capabilities | |
| Reasoning & Analysis | Slightly better extended thinking consistency | Already excellent reasoning | |
| Tool Use & Function Calling | More reliable schema adherence, fewer hallucinated parameters | Good tool use with occasional schema drift | |
| Instruction Following | More precise system prompt adherence in long conversations | Solid instruction following with some drift | |
| Pricing & Availability | $15/MTok input, $75/MTok output | $15/MTok input, $75/MTok output | |
| Total Score | 3/ 5 | 0/ 5 | 2 ties |
Key Statistics
Real data from verified industry sources to support your decision.
Anthropic benchmarks
Anthropic documentation
Anthropic evaluation
All statistics are from reputable third-party sources. Links to original sources available upon request.
When to Choose Each Option
Clear guidance based on your specific situation and needs.
Choose Claude Opus 4 (June 2025) when...
- You require improved coding workflows.
- Reliability in tool usage is essential.
- You are focused on agentic tasks.
Choose Claude Opus 4 (May 2025) when...
- You are satisfied with current workflows.
- You have no urgent need for updates.
- Cost is a concern for upgrades.
Our Recommendation
The June release improves tool use reliability and coding workflows. Recommended upgrade for agentic and coding-heavy use cases.
Need help deciding?
Book a free 30-minute consultation and we'll help you determine the best approach for your specific project.