Compare AI models
| Benchmarks | ||
BullshitBench v2Nonsense detection — Given 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. | 15% | 39% |
| Overview | ||
| Company | OpenAI | |
| Release date | Jan 30 2025 | Sep 15 2025 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
Gemini 2.0 FlashvsClaude Haiku 5.5GPT-5-CodexvsClaude Haiku 5.5Gemini 2.0 FlashvsMuse WonderGPT-5-CodexvsMuse WonderGemini 2.0 FlashvsGrok 4.7GPT-5-CodexvsGrok 4.7Gemini 2.0 FlashvsDeepSeek-V4.1-FlashGPT-5-CodexvsDeepSeek-V4.1-FlashGemini 2.0 FlashvsMistral Large 4GPT-5-CodexvsMistral Large 4Gemini 2.0 FlashvsKimi K3GPT-5-CodexvsKimi K3Frequently asked questions
GPT-5-Codex leads Gemini 2.0 Flash on 1 of the 1 benchmark they both report (BullshitBench v2). Gemini 2.0 Flash shipped 228 days before GPT-5-Codex, 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-Codex leads at 39% vs Gemini 2.0 Flash at 15%.