GPT-5-CodexvsGrok 2.5
GPT-5-Codex | Grok 2.5 | |
|---|---|---|
| BenchmarksPublished by one model only | ||
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. | 39% | — |
| Overview | ||
| Company | OpenAI | SpaceXAI |
| Release date | Sep 15 2025 | Aug 23 2025 |
| Access | Proprietary | Proprietary |
Other comparisons
GPT-5-CodexvsClaude Fable 5.1Grok 2.5vsClaude Fable 5.1GPT-5-CodexvsGemini 3.8 FlashGrok 2.5vsGemini 3.8 FlashGPT-5-CodexvsMuse Spark 1.3Grok 2.5vsMuse Spark 1.3GPT-5-CodexvsDeepSeek-V4.1-FlashGrok 2.5vsDeepSeek-V4.1-FlashGPT-5-CodexvsMistral Medium 3.5Grok 2.5vsMistral Medium 3.5GPT-5-CodexvsKimi K3Grok 2.5vsKimi K3
Frequently asked questions
GPT-5-Codex and Grok 2.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok 2.5 shipped 23 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.
Direct benchmark comparisons are unavailable — GPT-5-Codex and Grok 2.5 don't publish scores on any of the same benchmarks.