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. | 1M | 2M |
| 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. | 15% | — |
| Overview | ||
| Company | SpaceXSI | |
| Release date | Jan 30 2025 | Sep 19 2025 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
Gemini 2.0 FlashvsClaude Haiku 5.5Grok 4 FastvsClaude Haiku 5.5Gemini 2.0 FlashvsGPT-6.1 SolGrok 4 FastvsGPT-6.1 SolGemini 2.0 FlashvsMuse Spark OpenGrok 4 FastvsMuse Spark OpenGemini 2.0 FlashvsDeepSeek-V4.1-Flash-1017Grok 4 FastvsDeepSeek-V4.1-Flash-1017Gemini 2.0 FlashvsMistral Large 4Grok 4 FastvsMistral Large 4Gemini 2.0 FlashvsKimi K3Grok 4 FastvsKimi K3Frequently asked questions
Gemini 2.0 Flash and Grok 4 Fast don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 2.0 Flash shipped 232 days before Grok 4 Fast, so benchmark comparisons should account for the intervening progress.
Context windows are 1M (Gemini 2.0 Flash) vs 2M (Grok 4 Fast).
Direct benchmark comparisons are unavailable — Gemini 2.0 Flash and Grok 4 Fast don't publish scores on any of the same benchmarks.