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. | 34% | — |
SWE-Bench VerifiedCoding — Real coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 72.5% | — |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 79.6% | — |
| Overview | ||
| Company | Anthropic | SpaceXAI |
| Release date | May 22 2025 | Aug 23 2025 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
Claude Opus 4vsGPT-6.1 SolGrok 2.5vsGPT-6.1 SolClaude Opus 4vsGemini 4 ArgonGrok 2.5vsGemini 4 ArgonClaude Opus 4vsMuse Spark 1.3Grok 2.5vsMuse Spark 1.3Claude Opus 4vsDeepSeek-V4.1-FlashGrok 2.5vsDeepSeek-V4.1-FlashClaude Opus 4vsMistral Large 4Grok 2.5vsMistral Large 4Claude Opus 4vsKimi K3Grok 2.5vsKimi K3Frequently asked questions
Claude Opus 4 and Grok 2.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude Opus 4 shipped 93 days before Grok 2.5, 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.
Direct benchmark comparisons are unavailable — Claude Opus 4 and Grok 2.5 don't publish scores on any of the same benchmarks.