GPT-4o vs GPT-5
OpenAI GPT-4o | OpenAI GPT-5 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | OpenAI |
| Release date | May 13 2024 | Aug 7 2025 |
| Access | Proprietary | Proprietary |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 12% | 21%Best |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | — | 1394 |
| Timeline | ||
| Release gap | GPT-4o shipped 451 days before GPT-5 | |
Which is better: GPT-4o or GPT-5?
GPT-5 leads GPT-4o on 1 of the 1 benchmark they both report (BullshitBench v2). GPT-4o shipped 451 days before GPT-5, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
On BullshitBench v2, GPT-5 leads at 21% vs GPT-4o at 12%.
Frequently asked questions
GPT-4o was released by OpenAI on May 13 2024.
GPT-5 was released by OpenAI on Aug 7 2025.