GPT-5 performance degradation on simple tasks

4/10 Low

GPT-5 can feel slower than GPT-4o for simpler, everyday queries and coding tasks. Community backlash occurred regarding performance degradation for simple coding tasks before OpenAI fine-tuned model routing.

GPT-5 GPT-4o OpenAI API

Sources

https://skywork.ai/skypage/en/OpenAI-in-2025-Your-Ultimate-Guide-to-GPT-5,-Agents,-and-the-AI-Frontier/1973796242893893632
https://skywork.ai/skypage/en/OpenAI-in-2025:-Your-Ultimate-Guide-to-GPT-5,-Agents,-and-the-AI-Frontier/1973796242893893632

Collection History

Query: “What are the most common pain points with OpenAI API for developers in 2025?”3/30/2026

for simpler, everyday queries, some users have reported that GPT-5 can feel slower than the highly optimized GPT-4o. There was even some initial community backlash about performance degradation for simple coding tasks before OpenAI fine-tuned the model routing

Created: 3/30/2026Updated: 3/30/2026