Compare AI models
| API pricingUSD per 1M tokens · lower wins | ||
Cheapest inputLowest input rate across third-party providers, excluding the lab itself. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | $15.00Amazon Bedrock | — |
Cheapest outputLowest output rate across third-party providers, excluding the lab itself. May come from a different provider than the cheapest input. | $75.00Amazon Bedrock | — |
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. | 43% | — |
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. | 74.5% | — |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 80.9% | — |
| Overview | ||
| Company | Anthropic | SpaceXAI |
| Release date | Aug 5 2025 | Nov 3 2023 |
| Access | Closed | Open Weight |
| Model details | View model | View model |
Other comparisons
Claude Opus 4.1vsGPT-6.1 SolGrok‑1vsGPT-6.1 SolClaude Opus 4.1vsGemini 4 ArgonGrok‑1vsGemini 4 ArgonClaude Opus 4.1vsMuse Spark 1.3Grok‑1vsMuse Spark 1.3Claude Opus 4.1vsDeepSeek-V4.1-FlashGrok‑1vsDeepSeek-V4.1-FlashClaude Opus 4.1vsMistral Large 4Grok‑1vsMistral Large 4Claude Opus 4.1vsKimi K3Grok‑1vsKimi K3Frequently asked questions
Claude Opus 4.1 and Grok‑1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok‑1 shipped 641 days before Claude Opus 4.1, so benchmark comparisons should account for the intervening progress.
Claude Opus 4.1 is closed, while Grok‑1 is open weight.
Direct benchmark comparisons are unavailable — Claude Opus 4.1 and Grok‑1 don't publish scores on any of the same benchmarks.