Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
GPT-5.3 Instant is clearly ahead on the aggregate, 87 to 59. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.3 Instant's sharpest advantage is in coding, where it averages 78.7 against 38.7. The single biggest benchmark swing on the page is SWE-bench Pro, 83 to 41.
GPT-5.3 Instant is also the more expensive model on tokens at $1.75 input / $14.00 output per 1M tokens, versus $0.30 input / $1.20 output per 1M tokens for MiniMax M2.5. That is roughly 11.7x on output cost alone. GPT-5.3 Instant is the reasoning model in the pair, while MiniMax M2.5 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.
Pick GPT-5.3 Instant if you want the stronger benchmark profile. MiniMax M2.5 only becomes the better choice if you want the cheaper token bill or you would rather avoid the extra latency and token burn of a reasoning model.
GPT-5.3 Instant
82.9
MiniMax M2.5
53.4
GPT-5.3 Instant
78.7
MiniMax M2.5
38.7
GPT-5.3 Instant
95
MiniMax M2.5
62
GPT-5.3 Instant
94.2
MiniMax M2.5
69.6
GPT-5.3 Instant
80.8
MiniMax M2.5
55.3
GPT-5.3 Instant
96
MiniMax M2.5
85
GPT-5.3 Instant
93.4
MiniMax M2.5
82.1
GPT-5.3 Instant
97.2
MiniMax M2.5
76.1
GPT-5.3 Instant is ahead overall, 87 to 59. The biggest single separator in this matchup is SWE-bench Pro, where the scores are 83 and 41.
GPT-5.3 Instant has the edge for knowledge tasks in this comparison, averaging 80.8 versus 55.3. Inside this category, HLE is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for coding in this comparison, averaging 78.7 versus 38.7. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for math in this comparison, averaging 97.2 versus 76.1. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for reasoning in this comparison, averaging 94.2 versus 69.6. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for agentic tasks in this comparison, averaging 82.9 versus 53.4. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for multimodal and grounded tasks in this comparison, averaging 95 versus 62. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for instruction following in this comparison, averaging 96 versus 85. Inside this category, IFEval is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for multilingual tasks in this comparison, averaging 93.4 versus 82.1. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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