Claude 4.1 Opus vs Phi-4

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

Claude 4.1 Opus is clearly ahead on the aggregate, 69 to 39. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude 4.1 Opus's sharpest advantage is in multilingual, where it averages 85 against 80.6. The single biggest benchmark swing on the page is GPQA, 76 to 56.1. Phi-4 does hit back in coding, so the answer changes if that is the part of the workload you care about most.

Claude 4.1 Opus gives you the larger context window at 200K, compared with 16K for Phi-4.

Quick Verdict

Pick Claude 4.1 Opus if you want the stronger benchmark profile. Phi-4 only becomes the better choice if coding is the priority.

Knowledge

Phi-4

Claude 4.1 Opus

64

Phi-4

70.5

76
MMLU
84.8
76
GPQA
56.1
74
SuperGPQA
-
72
OpenBookQA
-
75
MMLU-Pro
-
11
HLE
-

Coding

Phi-4

Claude 4.1 Opus

52

Phi-4

82.6

68
HumanEval
82.6
48
SWE-bench Verified
-
40
LiveCodeBench
-

Mathematics

Claude 4.1 Opus
76
AIME 2023
-
78
AIME 2024
-
77
AIME 2025
-
72
HMMT Feb 2023
-
74
HMMT Feb 2024
-
73
HMMT Feb 2025
-
75
BRUMO 2025
-
81
MATH-500
-

Reasoning

Claude 4.1 Opus
74
SimpleQA
-
72
MuSR
-
81
BBH
-

Instruction Following

Claude 4.1 Opus
83
IFEval
-

Multilingual

Claude 4.1 Opus

Claude 4.1 Opus

85

Phi-4

80.6

85
MGSM
80.6

Frequently Asked Questions

Which is better, Claude 4.1 Opus or Phi-4?

Claude 4.1 Opus is ahead overall, 69 to 39. The biggest single separator in this matchup is GPQA, where the scores are 76 and 56.1.

Which is better for knowledge tasks, Claude 4.1 Opus or Phi-4?

Phi-4 has the edge for knowledge tasks in this comparison, averaging 70.5 versus 64. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for coding, Claude 4.1 Opus or Phi-4?

Phi-4 has the edge for coding in this comparison, averaging 82.6 versus 52. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Claude 4.1 Opus or Phi-4?

Claude 4.1 Opus has the edge for multilingual tasks in this comparison, averaging 85 versus 80.6. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

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