SpaceXAIGrok 4 Fast R
Grok 4 Fast R is a SpaceXAI proprietary model. It is not yet ranked: 1 independent result so far, and the index needs at least five across two categories.
- Blended price
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- Output speed
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- First answer
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- Context
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- Full answer
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- Cost per run
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- Released
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- date not published by our sources
- Maths42
Benchmark results
See all LLM benchmarks. One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.
Maths
| Benchmark | not stated | Source |
|---|---|---|
| MathArena Apexpossible contamination | 5.2%#25 | MathArena |
More from SpaceXAI
See also
Questions people ask
- Why does Grok 4 Fast R have no BenchLeader Index score?
- The index needs at least five independent results across at least two categories; as of 25 Oct 2026 Grok 4 Fast R has 1 that count. Launch-post scores are never used, so it is ranked once independent publishers have measured it.
Data as of 25 Oct 2026. Compare with another model.
Cite as: BenchLeader, “Grok 4 Fast R: benchmarks, pricing, speed and rank”, data as of 25 Oct 2026, https://www.benchleader.com/models/grok-4-fast-r.