Compare AI models
These models have no shared benchmark scores. | ||
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. | 50% | — |
Humanity's Last Exam · with toolsMultidisciplinary reasoning — Humanity's Last Exam — extremely hard expert questions across many subjects. “With tools” means the AI is allowed to search the web or run code while answering. Higher is better. | 35% | — |
| Overview | ||
| Company | SpaceXAI | SpaceXAI |
| Release date | Apr 17 2026 | Mar 29 2024 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
Grok 4.3 BetavsClaude Sonnet 5.5Grok‑1.5vsClaude Sonnet 5.5Grok 4.3 BetavsGPT-6.1 SolGrok‑1.5vsGPT-6.1 SolGrok 4.3 BetavsGemini 4 ArgonGrok‑1.5vsGemini 4 ArgonGrok 4.3 BetavsMuse Spark 1.3Grok‑1.5vsMuse Spark 1.3Grok 4.3 BetavsDeepSeek-V4.1-FlashGrok‑1.5vsDeepSeek-V4.1-FlashGrok 4.3 BetavsMistral Large 4Grok‑1.5vsMistral Large 4Frequently asked questions
Grok 4.3 Beta and Grok‑1.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok‑1.5 shipped 749 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.
Direct benchmark comparisons are unavailable — Grok 4.3 Beta and Grok‑1.5 don't publish scores on any of the same benchmarks.