GPT-4o minivsGrok 4.3 Beta
GPT-4o mini | Grok 4.3 Beta | |
|---|---|---|
| Specifications | ||
Context window | 128k | — |
| 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. | 2% | 50%Best |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 40.2% | — |
| Overview | ||
| Company | OpenAI | SpaceXAI |
| Release date | Jul 18 2024 | Apr 17 2026 |
| Access | Proprietary | Proprietary |
Which is better: GPT-4o mini or Grok 4.3 Beta?
Grok 4.3 Beta leads GPT-4o mini on 1 of the 1 benchmark they both report (BullshitBench v2). GPT-4o mini shipped 638 days before Grok 4.3 Beta, 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, Grok 4.3 Beta leads at 50% vs GPT-4o mini at 2%.
Frequently asked questions
GPT-4o mini was released by OpenAI on Jul 18 2024.
Grok 4.3 Beta was released by SpaceXAI on Apr 17 2026.
Other comparisons
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