GPT-OSS 120B vs DBRX Instruct

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

GPT-OSS 120B is clearly ahead on the aggregate, 50 to 32. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

GPT-OSS 120B gives you the larger context window at 128K, compared with 32K for DBRX Instruct.

Quick Verdict

Pick GPT-OSS 120B if you want the stronger benchmark profile. DBRX Instruct only becomes the better choice if coding is the priority.

Knowledge

DBRX Instruct

GPT-OSS 120B

43.8

DBRX Instruct

73.7

51
MMLU
73.7
50
GPQA
-
48
SuperGPQA
-
46
OpenBookQA
-
63
MMLU-Pro
-
5
HLE
-

Coding

DBRX Instruct

GPT-OSS 120B

32.3

DBRX Instruct

70.1

43
HumanEval
70.1
29
SWE-bench Verified
-
25
LiveCodeBench
-

Mathematics

GPT-OSS 120B
51
AIME 2023
-
53
AIME 2024
-
52
AIME 2025
-
47
HMMT Feb 2023
-
49
HMMT Feb 2024
-
48
HMMT Feb 2025
-
50
BRUMO 2025
-
71
MATH-500
-

Reasoning

GPT-OSS 120B
49
SimpleQA
-
47
MuSR
-
73
BBH
-

Instruction Following

GPT-OSS 120B
79
IFEval
-

Multilingual

GPT-OSS 120B
72
MGSM
-

Frequently Asked Questions

Which is better, GPT-OSS 120B or DBRX Instruct?

GPT-OSS 120B is ahead overall, 50 to 32. The biggest single separator in this matchup is HumanEval, where the scores are 43 and 70.1.

Which is better for knowledge tasks, GPT-OSS 120B or DBRX Instruct?

DBRX Instruct has the edge for knowledge tasks in this comparison, averaging 73.7 versus 43.8. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, GPT-OSS 120B or DBRX Instruct?

DBRX Instruct has the edge for coding in this comparison, averaging 70.1 versus 32.3. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

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