Grok 4.1 Fast vs o1
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Grok 4.1 Fast by xAI wins on 10 of 14 benchmarks against o1 by OpenAI, which leads on 4. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
General Intelligence: In general intelligence, Grok 4.1 Fast scores 1482 on Chatbot Arena ELO compared to o1's 1360, while Grok 4.1 Fast scores 87.0% on MMLU-Pro compared to o1's 82.0%.
Coding: In coding, o1 scores 89.0% on HumanEval+ compared to Grok 4.1 Fast's 88.0%, while Grok 4.1 Fast scores 60.0% on SWE-bench Verified compared to o1's 48.9%, while Grok 4.1 Fast scores 62.0% on LiveCodeBench compared to o1's 55.0%.
Math: In math, o1 scores 94.8% on MATH compared to Grok 4.1 Fast's 89.0%, while o1 scores 97.5% on GSM8K compared to Grok 4.1 Fast's 96.0%.
Reasoning: In reasoning, o1 scores 77.3% on GPQA Diamond compared to Grok 4.1 Fast's 72.0%, while Grok 4.1 Fast scores 48.0% on ARC-AGI compared to o1's 32.0%.
Context: In context, Grok 4.1 Fast scores 256K on Context Length compared to o1's 200K.
Pricing Comparison
Grok 4.1 Fast costs $0.20/1M input tokens and $0.50/1M output tokens, while o1 costs $15.0/1M input and $60.0/1M output. Grok 4.1 Fast is the more affordable option for API usage.
Speed Comparison
Grok 4.1 Fast generates output at 120 tok/s compared to o1's 35 tok/s, and the time to first token is 200 ms for Grok 4.1 Fast versus 1000 ms for o1. Grok 4.1 Fast delivers faster throughput.
Verdict
For developers prioritizing coding and general intelligence and affordability and speed, Grok 4.1 Fast has the edge. For those who value math, o1 is the stronger choice.
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Grok 4.1 Fast vs o1 — FAQ
Which is better, Grok 4.1 Fast or o1?
Grok 4.1 Fast wins on more benchmarks overall (10 vs 4). However, the best choice depends on your specific needs — each model excels in different areas.
How does Grok 4.1 Fast compare to o1 for coding?
Grok 4.1 Fast is better for coding, scoring 60.0% on SWE-bench Verified compared to 48.9%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Grok 4.1 Fast cheaper than o1?
Yes, Grok 4.1 Fast is cheaper. Grok 4.1 Fast costs $0.20/1M input and $0.50/1M output tokens. o1 costs $15.0/1M input and $60.0/1M output tokens.
Which is faster, Grok 4.1 Fast or o1?
Grok 4.1 Fast is faster, generating output at 120 tok/s compared to 35 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Grok 4.1 Fast vs o1 comparison cover?
This comparison covers 14 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MATH, GPQA Diamond, SWE-bench Verified, Output Speed, LiveCodeBench, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.