Grok Code Fast 1 vs o1

Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.

Grok Code Fast 1 is clearly ahead on the aggregate, 58 to 51. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

o1 is the reasoning model in the pair, while Grok Code Fast 1 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Grok Code Fast 1 gives you the larger context window at 256K, compared with 200K for o1.

Quick Verdict

Pick Grok Code Fast 1 if you want the stronger benchmark profile. o1 only becomes the better choice if knowledge is the priority or you want the stronger reasoning-first profile.

Knowledge

o1

Grok Code Fast 1

53.2

o1

83.8

64
MMLU
91.8
63
GPQA
75.7
61
SuperGPQA
-
59
OpenBookQA
-
65
MMLU-Pro
-
7
HLE
-

Coding

o1

Grok Code Fast 1

38.3

o1

41

60
HumanEval
-
31
SWE-bench Verified
41
24
LiveCodeBench
-

Mathematics

o1

Grok Code Fast 1

64.3

o1

74.3

64
AIME 2023
-
66
AIME 2024
74.3
65
AIME 2025
-
60
HMMT Feb 2023
-
62
HMMT Feb 2024
-
61
HMMT Feb 2025
-
63
BRUMO 2025
-
73
MATH-500
-

Reasoning

Grok Code Fast 1
61
SimpleQA
-
59
MuSR
-
75
BBH
-

Instruction Following

o1

Grok Code Fast 1

79

o1

92.2

79
IFEval
92.2

Multilingual

Grok Code Fast 1
75
MGSM
-

Frequently Asked Questions

Which is better, Grok Code Fast 1 or o1?

Grok Code Fast 1 is ahead overall, 58 to 51. The biggest single separator in this matchup is MMLU, where the scores are 64 and 91.8.

Which is better for knowledge tasks, Grok Code Fast 1 or o1?

o1 has the edge for knowledge tasks in this comparison, averaging 83.8 versus 53.2. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Grok Code Fast 1 or o1?

o1 has the edge for coding in this comparison, averaging 41 versus 38.3. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

Which is better for math, Grok Code Fast 1 or o1?

o1 has the edge for math in this comparison, averaging 74.3 versus 64.3. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.

Which is better for instruction following, Grok Code Fast 1 or o1?

o1 has the edge for instruction following in this comparison, averaging 92.2 versus 79. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

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