Gemma 4 vs Grok 4.1 Fast
Google Gemma 4 | SpaceXAI Grok 4.1 Fast | |
|---|---|---|
| Overview | ||
| Company | SpaceXAI | |
| Release date | Apr 2 2026 | Nov 19 2025 |
| Access | Open Weight | Proprietary |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given 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. | — | 19% |
| Timeline | ||
| Release gap | Grok 4.1 Fast shipped 134 days before Gemma 4 | |
Which is better: Gemma 4 or Grok 4.1 Fast?
Gemma 4 and Grok 4.1 Fast don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok 4.1 Fast shipped 134 days before Gemma 4, so benchmark comparisons should account for the intervening progress.
Gemma 4 is open weight, while Grok 4.1 Fast is proprietary.
Direct benchmark comparisons are unavailable — Gemma 4 and Grok 4.1 Fast don't publish scores on any of the same benchmarks.
Frequently asked questions
Gemma 4 was released by Google on Apr 2 2026.
Grok 4.1 Fast was released by SpaceXAI on Nov 19 2025.
Gemma 4 is an open weight model released by Google. Grok 4.1 Fast is a proprietary model released by SpaceXAI.
Other comparisons
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