Model profile
Grok 4.1 Fast
Evidence coverage
13 of 321 tracked benchmarks are published. 1 is verified and 12 provisional. 6 of 8 categories are measured.
- Published / tracked
- 13 / 321
- Verified
- 1
- Provisional
- 12
- Categories with evidence
- 6 / 8
Evidence by category
- Agentic2 benchmarksMixed evidence
- Coding1 benchmarkReported
- Reasoning2 benchmarksReported
- Knowledge6 benchmarksReported
- Math0 benchmarksNot measured
- Multilingual0 benchmarksNot measured
- Multimodal1 benchmarkReported
- Inst. Following1 benchmarkReported
Grok 4.1 Fast ranks #107 out of 200 models on the public leaderboard with an overall score of 51.25/100. It also ranks #59 out of 99 on the verified leaderboard. While not a frontier model, it offers specific advantages depending on the use case.
Grok 4.1 Fast is a proprietary model with a 1M token context window. It processes queries without explicit chain-of-thought reasoning, offering faster response times and lower token usage.
Grok 4.1 Fast sits inside the Grok 4.1 Fast family alongside Grok 4.1 Fast (Reasoning). This profile currently has 13 of 321 tracked benchmarks. BenchLM only exposes non-generated benchmark rows publicly, so missing categories stay blank until a sourced evaluation is available.
Peer position
Exact provisional scores and ranks for the closest listed peers. A score can appear before a model clears the evidence threshold for a rank, so equal scores can have different rank states.
Range 50.87–51.47
- Qwen3.6-35B-A3BAlibabaCompare#10451.47Qwen3.6-35B-A3B is #104 with a score of 51.47.
- Mercury 2InceptionCompare#10551.28Mercury 2 is #105 with a score of 51.28.
- GLM-4.7-FlashZ.AICompare#10651.25GLM-4.7-Flash is #106 with a score of 51.25.
- Grok 4.1 FastCurrent modelxAI#10751.25Grok 4.1 Fast is #107 with a score of 51.25.
- GPT-4.1OpenAICompare#10851.11GPT-4.1 is #108 with a score of 51.11.
- Nemotron 3 Super 120B A12BNVIDIACompare#10950.97Nemotron 3 Super 120B A12B is #109 with a score of 50.97.
- Step 3.7 FlashStepFunCompare#11050.87Step 3.7 Flash is #110 with a score of 50.87.
Category percentile
More
Relative position among models eligible for each sourced category. A higher percentile means a stronger position within that category's ranked cohort; 100 is highest.
Category evidence
Scores and ranks appear only where this model has published benchmark evidence. Categories without displayable source records remain not measured.
| Category | Score | Rank | Percentile | Weight | Benchmarks | Evidence |
|---|---|---|---|---|---|---|
| AgenticRank Not rankedWeight 22%2 benchmarksMixed sources | 71.0 | Not ranked | Not available | 22% | 2 benchmarks | Mixed sources |
| CodingRank Not rankedWeight 20%1 benchmarkReported | 58.9 | Not ranked | Not available | 20% | 1 benchmark | Reported |
| ReasoningRank Not rankedWeight 17%2 benchmarksReported | 87.9 | Not ranked | Not available | 17% | 2 benchmarks | Reported |
| KnowledgeRank Not rankedWeight 12%6 benchmarksReported | 55.9 | Not ranked | Not available | 12% | 6 benchmarks | Reported |
| MathWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
| MultilingualWeight 7%0 benchmarksNot measured | Not measured | Not ranked | Not available | 7% | 0 benchmarks | Not measured |
| MultimodalRank Not rankedWeight 12%1 benchmarkReported | 87.8 | Not ranked | Not available | 12% | 1 benchmark | Reported |
| Inst. FollowingRank Not rankedWeight 5%1 benchmarkReported | 79.7 | Not ranked | Not available | 5% | 1 benchmark | Reported |
Chatbot Arena performance
Scroll horizontally to inspect confidence intervals and vote counts.
| View | Elo | Confidence interval | Votes |
|---|---|---|---|
| Text Overall | 1420 | Not available | Not available |
Benchmark Details
Rows below have a displayable published verification record. Each source link and provenance note remains in the page HTML while its category is closed. Source-unverified manual rows and generated rows stay hidden.
Agentic2 benchmarks
τ²-Bench Tool-Agent-User Evaluation
Gert Labs Composite Game Benchmark
Coding1 benchmark
Artificial Analysis SciCode
Reasoning2 benchmarks
Artificial Analysis Long Context Reasoning
Critical Physics Tasks
Knowledge6 benchmarks
Artificial Analysis GPQA Diamond
Artificial Analysis Humanity's Last Exam
Artificial Analysis Omniscience Index
Artificial Analysis Omniscience Accuracy
Artificial Analysis Omniscience Hallucination Rate
Multimodal1 benchmark
Artificial Analysis MMMU-Pro
Inst. Following1 benchmark
Artificial Analysis IFBench
Frequently Asked Questions
How does Grok 4.1 Fast perform overall in AI benchmarks?
Grok 4.1 Fast has 13 published benchmark scores on BenchLM, but it does not yet have enough non-generated coverage to receive a global overall rank.
Is Grok 4.1 Fast good for knowledge and understanding?
Grok 4.1 Fast has visible benchmark coverage in knowledge and understanding, but BenchLM does not currently assign it a global category rank there.
Is Grok 4.1 Fast good for coding and programming?
Grok 4.1 Fast has visible benchmark coverage in coding and programming, but BenchLM does not currently assign it a global category rank there.
Is Grok 4.1 Fast good for reasoning and logic?
Grok 4.1 Fast has visible benchmark coverage in reasoning and logic, but BenchLM does not currently assign it a global category rank there.
Is Grok 4.1 Fast good for agentic tool use and computer tasks?
Grok 4.1 Fast has visible benchmark coverage in agentic tool use and computer tasks, but BenchLM does not currently assign it a global category rank there.
Is Grok 4.1 Fast good for multimodal and grounded tasks?
Grok 4.1 Fast has visible benchmark coverage in multimodal and grounded tasks, but BenchLM does not currently assign it a global category rank there.
Is Grok 4.1 Fast good for instruction following?
Grok 4.1 Fast has visible benchmark coverage in instruction following, but BenchLM does not currently assign it a global category rank there.
Which sibling models are related to Grok 4.1 Fast?
Grok 4.1 Fast belongs to the Grok 4.1 Fast family. Related variants on BenchLM include Grok 4.1 Fast (Reasoning).
Does Grok 4.1 Fast have full benchmark coverage on BenchLM?
Not yet. Grok 4.1 Fast currently has 13 published benchmark scores out of the 321 benchmarks BenchLM tracks. BenchLM only exposes non-generated public benchmark rows, so missing categories stay blank until a sourced evaluation is available.
What is the context window size of Grok 4.1 Fast?
Grok 4.1 Fast has a published context window of 1M, which determines how much text it can process in a single interaction.
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