o3 vs DBRX Instruct

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

o3 is clearly ahead on the aggregate, 76 to 32. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

o3 is also the more expensive model on tokens at $10.00 input / $40.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for DBRX Instruct. That is roughly Infinityx on output cost alone. o3 is the reasoning model in the pair, while DBRX Instruct 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. o3 gives you the larger context window at 200K, compared with 32K for DBRX Instruct.

Quick Verdict

Pick o3 if you want the stronger benchmark profile. DBRX Instruct only becomes the better choice if coding is the priority or you want the cheaper token bill.

Knowledge

DBRX Instruct

o3

73.3

DBRX Instruct

73.7

86
MMLU
73.7
87
GPQA
-
85
SuperGPQA
-
83
OpenBookQA
-
75
MMLU-Pro
-
24
HLE
-

Coding

DBRX Instruct

o3

56

DBRX Instruct

70.1

78
HumanEval
70.1
50
SWE-bench Verified
-
40
LiveCodeBench
-

Mathematics

o3
88
AIME 2023
-
90
AIME 2024
-
89
AIME 2025
-
84
HMMT Feb 2023
-
86
HMMT Feb 2024
-
85
HMMT Feb 2025
-
87
BRUMO 2025
-
88
MATH-500
-

Reasoning

o3
84
SimpleQA
-
82
MuSR
-
86
BBH
-

Instruction Following

o3
85
IFEval
-

Multilingual

o3
83
MGSM
-

Frequently Asked Questions

Which is better, o3 or DBRX Instruct?

o3 is ahead overall, 76 to 32. The biggest single separator in this matchup is MMLU, where the scores are 86 and 73.7.

Which is better for knowledge tasks, o3 or DBRX Instruct?

DBRX Instruct has the edge for knowledge tasks in this comparison, averaging 73.7 versus 73.3. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, o3 or DBRX Instruct?

DBRX Instruct has the edge for coding in this comparison, averaging 70.1 versus 56. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

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