Opus 4.5 Achieves Breakthrough Performance in Real-World Web App Development
Published:Jan 4, 2026 09:55
•1 min read
•r/ClaudeAI
Analysis
This anecdotal report highlights a significant leap in AI's ability to automate complex software development tasks. The dramatic reduction in development time suggests improved reasoning and code generation capabilities in Opus 4.5 compared to previous models like Gemini CLI. However, relying on a single user's experience limits the generalizability of these findings.
Key Takeaways
- •Opus 4.5 significantly outperformed Gemini CLI in a specific web app development task.
- •The user reported a reduction in development time from approximately 7 hours to 7 minutes.
- •The task involved parsing complex .xlsx data and generating JSON for a university timetable application.
Reference
“It Opened Chrome and successfully tested for each student all within 7 minutes.”