I Tested GPT-5.4 vs Claude Opus 4.6 vs Gemini 3.1 Pro on 5 Real Coding Tasks

📰 Dev.to AI

Comparison of GPT-5.4, Claude Opus 4.6, and Gemini 3.1 Pro on real-world coding tasks

intermediate Published 30 Mar 2026

Action Steps

Refactor a 400-line Express router into a layered architecture
Debug an async race condition
Generate CRUD endpoints from an OpenAPI spec
Complete two other real-world coding challenges
Evaluate the performance of each model on these tasks

Who Needs to Know This

Software engineers and developers can benefit from this comparison to choose the best AI model for their coding tasks, and product managers can use this information to inform their decisions on AI-powered coding tools

Key Insight

💡 Real-world coding tasks can be used to compare the performance of different AI models, such as GPT-5.4, Claude Opus 4.6, and Gemini 3.1 Pro