Grok 4.1 Fast (Reasoning) vs Grok 4 Fast (Reasoning)
Change models
IndexAll categories, out of 100.
47.3 ±3.9 best
45.3 ±4.3
GapIndex points below the top.
Top
−2.0 · no clear gap
CoverageIndex weight that has results.
100% best
95%
SpeedOutput tokens per second.
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EloLMArena rating and rank.
1408 best
1400
ReleasedMonth of release.
2025-11
2025-09
Input / 1MUS dollars per 1M input tokens.
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Output / 1MUS dollars per 1M output tokens.
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1K chats2K tokens in, 500 out, each.
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1K documents20K tokens in, 1K out, each.
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1K agent tasks200K tokens in, 20K out, each.
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ContextMaximum tokens in one request.
2M
2M
AgenticMulti-step tasks with tools.
48.4 best
42.9
CodingCode writing and repair.
43.3
44.9 best
ReasoningLogic problems and puzzles.
50.3 best
47.8
MultimodalTasks with images and text.
43.6 best
42.7
KnowledgeFacts and expert knowledge.
48.1 best
46.6
MultilingualTasks in many languages.
59.5
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InstructionTasks with strict prompt rules.
38.3 best
36.2
MathMath problems.
55.7 best
55.4
Benchmarks
30 sharedOnly Grok 4.1 Fast (Reasoning): 11Only Grok 4 Fast (Reasoning): 5
Grok 4.1 Fast (Reasoning)
Grok 4 Fast (Reasoning)