Compare AI models
| Specifications | ||
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider. | 200k | 256k |
| 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 | SpaceXSI |
| Release date | May 22 2025 | Jul 9 2025 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
Claude Opus 4vsGPT-6.1 SolGrok 4vsGPT-6.1 SolClaude Opus 4vsGemini 4 ArgonGrok 4vsGemini 4 ArgonClaude Opus 4vsMuse Spark OpenGrok 4vsMuse Spark OpenClaude Opus 4vsDeepSeek-V4.1-Flash-1017Grok 4vsDeepSeek-V4.1-Flash-1017Claude Opus 4vsMistral Large 4Grok 4vsMistral Large 4Claude Opus 4vsKimi K3Grok 4vsKimi K3Frequently asked questions
Claude Opus 4 and Grok 4 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude Opus 4 shipped 48 days before Grok 4, so benchmark comparisons should account for the intervening progress.
Context windows are 200k (Claude Opus 4) vs 256k (Grok 4).
Direct benchmark comparisons are unavailable — Claude Opus 4 and Grok 4 don't publish scores on any of the same benchmarks.