GPT-5.5 vs GPT-5.4: When to Upgrade for Complex Coding and Cost Efficiency
OpenAI’s GPT‑5.5 delivers higher performance on complex coding, tool use, and professional workflows, but its token price is roughly twice that of GPT‑5.4; developers should adopt it for demanding, multi‑step tasks while keeping GPT‑5.4 for stable, cost‑sensitive workloads after real‑world testing.
