Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
GPT-5.2 Instant is clearly ahead on the aggregate, 85 to 77. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.2 Instant's sharpest advantage is in multimodal & grounded, where it averages 93.1 against 75.6. The single biggest benchmark swing on the page is MMMU-Pro, 94 to 72.
o1-preview gives you the larger context window at 200K, compared with 128K for GPT-5.2 Instant.
Pick GPT-5.2 Instant if you want the stronger benchmark profile. o1-preview only becomes the better choice if you need the larger 200K context window.
GPT-5.2 Instant
79.6
o1-preview
75.4
GPT-5.2 Instant
75.5
o1-preview
64.6
GPT-5.2 Instant
93.1
o1-preview
75.6
GPT-5.2 Instant
90.9
o1-preview
86.8
GPT-5.2 Instant
79.8
o1-preview
71.3
GPT-5.2 Instant
95
o1-preview
88
GPT-5.2 Instant
94.4
o1-preview
87.4
GPT-5.2 Instant
97.2
o1-preview
93.5
GPT-5.2 Instant is ahead overall, 85 to 77. The biggest single separator in this matchup is MMMU-Pro, where the scores are 94 and 72.
GPT-5.2 Instant has the edge for knowledge tasks in this comparison, averaging 79.8 versus 71.3. Inside this category, HLE is the benchmark that creates the most daylight between them.
GPT-5.2 Instant has the edge for coding in this comparison, averaging 75.5 versus 64.6. Inside this category, LiveCodeBench is the benchmark that creates the most daylight between them.
GPT-5.2 Instant has the edge for math in this comparison, averaging 97.2 versus 93.5. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
GPT-5.2 Instant has the edge for reasoning in this comparison, averaging 90.9 versus 86.8. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
GPT-5.2 Instant has the edge for agentic tasks in this comparison, averaging 79.6 versus 75.4. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
GPT-5.2 Instant has the edge for multimodal and grounded tasks in this comparison, averaging 93.1 versus 75.6. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
GPT-5.2 Instant has the edge for instruction following in this comparison, averaging 95 versus 88. Inside this category, IFEval is the benchmark that creates the most daylight between them.
GPT-5.2 Instant has the edge for multilingual tasks in this comparison, averaging 94.4 versus 87.4. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.
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