Grok 4.1 Fast
According to BenchLM.ai, Grok 4.1 Fast ranks #38 out of 119 models on the provisional leaderboard with an overall score of 69/100. It does not yet have enough sourced coverage for BenchLM's 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 18 of 225 tracked benchmarks. BenchLM only exposes non-generated benchmark rows publicly, so missing categories stay blank until a sourced evaluation is available.
Its strongest category is Reasoning (#9), while its weakest is Coding (#45). This performance profile makes it particularly strong for complex reasoning, multi-step problem solving, and analytical tasks.
Ranking Distribution
Category rank across 8 benchmark categories — sorted by best rank
Category Performance
Scores across all benchmark categories (0-100 scale)
Category Breakdown
Agentic
#29Coding
#45Reasoning
#9Knowledge
#27Math
#9Multilingual
#24Multimodal
#10Inst. Following
#35Chatbot Arena Performance
Benchmark Details
Only benchmark rows with an attached exact-source record are shown here. Source-unverified manual rows and generated rows are hidden from model pages.
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Frequently Asked Questions
How does Grok 4.1 Fast perform overall in AI benchmarks?
Grok 4.1 Fast currently ranks #38 out of 119 models on BenchLM's provisional leaderboard with an overall score of 69 (estimated). It is created by xAI and features a 1M context window.
Is Grok 4.1 Fast good for knowledge and understanding?
Grok 4.1 Fast ranks #27 out of 119 models in knowledge and understanding benchmarks with an average score of 75.4. There are stronger options in this category.
Is Grok 4.1 Fast good for coding and programming?
Grok 4.1 Fast ranks #45 out of 119 models in coding and programming benchmarks with an average score of 60.1. There are stronger options in this category.
Is Grok 4.1 Fast good for reasoning and logic?
Grok 4.1 Fast ranks #9 out of 119 models in reasoning and logic benchmarks with an average score of 87.7. It is among the top performers in this category.
Is Grok 4.1 Fast good for agentic tool use and computer tasks?
Grok 4.1 Fast ranks #29 out of 119 models in agentic tool use and computer tasks benchmarks with an average score of 62.7. There are stronger options in this category.
Is Grok 4.1 Fast good for multimodal and grounded tasks?
Grok 4.1 Fast ranks #10 out of 119 models in multimodal and grounded tasks benchmarks with an average score of 88.7. It is among the top performers in this category.
Is Grok 4.1 Fast good for instruction following?
Grok 4.1 Fast ranks #35 out of 119 models in instruction following benchmarks with an average score of 79.7. There are stronger options in this category.
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 18 published benchmark scores out of the 225 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 context window of 1M, which determines how much text it can process in a single interaction.
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