Grok Code Fast 1 vs Phi-4

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

Grok Code Fast 1 is clearly ahead on the aggregate, 58 to 39. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Grok Code Fast 1 gives you the larger context window at 256K, compared with 16K for Phi-4.

Quick Verdict

Pick Grok Code Fast 1 if you want the stronger benchmark profile. Phi-4 only becomes the better choice if coding is the priority.

Knowledge

Phi-4

Grok Code Fast 1

53.2

Phi-4

70.5

64
MMLU
84.8
63
GPQA
56.1
61
SuperGPQA
-
59
OpenBookQA
-
65
MMLU-Pro
-
7
HLE
-

Coding

Phi-4

Grok Code Fast 1

38.3

Phi-4

82.6

60
HumanEval
82.6
31
SWE-bench Verified
-
24
LiveCodeBench
-

Mathematics

Grok Code Fast 1
64
AIME 2023
-
66
AIME 2024
-
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

Grok Code Fast 1
79
IFEval
-

Multilingual

Phi-4

Grok Code Fast 1

75

Phi-4

80.6

75
MGSM
80.6

Frequently Asked Questions

Which is better, Grok Code Fast 1 or Phi-4?

Grok Code Fast 1 is ahead overall, 58 to 39. The biggest single separator in this matchup is HumanEval, where the scores are 60 and 82.6.

Which is better for knowledge tasks, Grok Code Fast 1 or Phi-4?

Phi-4 has the edge for knowledge tasks in this comparison, averaging 70.5 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 Phi-4?

Phi-4 has the edge for coding in this comparison, averaging 82.6 versus 38.3. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Grok Code Fast 1 or Phi-4?

Phi-4 has the edge for multilingual tasks in this comparison, averaging 80.6 versus 75. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

Weekly LLM Benchmark Digest

Get notified when new models drop, benchmark scores change, or the leaderboard shifts. One email per week.

Free. No spam. Unsubscribe anytime. We only store derived location metadata for consent routing.