DeepSeek V3.1 vs GPT-4.1 mini

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

DeepSeek V3.1 and GPT-4.1 mini finish on the same overall score, so this is less about a single winner and more about where the edge shows up. The headline says tie; the benchmark table is where the real choice happens.

GPT-4.1 mini gives you the larger context window at 1M, compared with 128K for DeepSeek V3.1.

Quick Verdict

Treat this as a split decision. DeepSeek V3.1 makes more sense if mathematics is the priority; GPT-4.1 mini is the better fit if knowledge is the priority or you need the larger 1M context window.

Knowledge

GPT-4.1 mini

DeepSeek V3.1

29.7

GPT-4.1 mini

75.9

33
MMLU
87.5
32
GPQA
64.2
30
SuperGPQA
-
28
OpenBookQA
-
53
MMLU-Pro
-
2
HLE
-

Coding

GPT-4.1 mini

DeepSeek V3.1

17.7

GPT-4.1 mini

23.6

25
HumanEval
-
13
SWE-bench Verified
23.6
15
LiveCodeBench
-

Mathematics

DeepSeek V3.1

DeepSeek V3.1

35.4

GPT-4.1 mini

23.1

33
AIME 2023
-
35
AIME 2024
23.1
34
AIME 2025
-
29
HMMT Feb 2023
-
31
HMMT Feb 2024
-
30
HMMT Feb 2025
-
32
BRUMO 2025
-
59
MATH-500
-

Reasoning

DeepSeek V3.1
31
SimpleQA
-
29
MuSR
-
61
BBH
-

Instruction Following

GPT-4.1 mini

DeepSeek V3.1

67

GPT-4.1 mini

88.5

67
IFEval
88.5

Multilingual

DeepSeek V3.1
64
MGSM
-

Frequently Asked Questions

Which is better, DeepSeek V3.1 or GPT-4.1 mini?

DeepSeek V3.1 and GPT-4.1 mini are tied on overall score, so the right pick depends on which category matters most for your use case.

Which is better for knowledge tasks, DeepSeek V3.1 or GPT-4.1 mini?

GPT-4.1 mini has the edge for knowledge tasks in this comparison, averaging 75.9 versus 29.7. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, DeepSeek V3.1 or GPT-4.1 mini?

GPT-4.1 mini has the edge for coding in this comparison, averaging 23.6 versus 17.7. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

Which is better for math, DeepSeek V3.1 or GPT-4.1 mini?

DeepSeek V3.1 has the edge for math in this comparison, averaging 35.4 versus 23.1. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.

Which is better for instruction following, DeepSeek V3.1 or GPT-4.1 mini?

GPT-4.1 mini has the edge for instruction following in this comparison, averaging 88.5 versus 67. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

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