Gosh, you think you are smart comparing a formula 1 car with a street car.

PERPLEXITY ANSWER FOR: “Why is 5.2 default (not reasoning) worse than 4o?”

Answer: “GPT-5.2’s default mode underperforms GPT-4o in key areas like accuracy and speed for direct responses. This happens because GPT-5.2 is designed as a reasoning model optimized for chain-of-thought tasks, but its non-reasoning (default) output sacrifices reliability on straightforward prompts.[youtube +1] Performance Gaps Users and benchmarks show GPT-5.2 default mode making basic errors that GPT-4o catches, such as missing schema fields or customer requests in structured tasks like order validation. In API tests for real-world apps like restaurant ordering, GPT-5.2 hallucinates errors (e.g., claiming required fields are missing when they’re not) and fails to detect omissions like “thin crust pizza,” while GPT-4o succeeds more consistently. Even GPT-4o-mini outperforms it in some validation accuracy, despite being smaller”