Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
GPT-5.4 has the cleaner overall profile here, landing at 90 versus 87. It is a real lead, but still close enough that category-level strengths matter more than the headline number.
GPT-5.4's sharpest advantage is in coding, where it averages 84.5 against 78.7. The single biggest benchmark swing on the page is LiveCodeBench, 84 to 75.
GPT-5.4 is also the more expensive model on tokens at $2.50 input / $15.00 output per 1M tokens, versus $1.75 input / $14.00 output per 1M tokens for GPT-5.3 Instant. GPT-5.4 gives you the larger context window at 1.05M, compared with 128K for GPT-5.3 Instant.
Pick GPT-5.4 if you want the stronger benchmark profile. GPT-5.3 Instant only becomes the better choice if you want the cheaper token bill.
GPT-5.4
87.8
GPT-5.3 Instant
82.9
GPT-5.4
84.5
GPT-5.3 Instant
78.7
GPT-5.4
95.5
GPT-5.3 Instant
95
GPT-5.4
95.8
GPT-5.3 Instant
94.2
GPT-5.4
82.6
GPT-5.3 Instant
80.8
GPT-5.4
96
GPT-5.3 Instant
96
GPT-5.4
94.7
GPT-5.3 Instant
93.4
GPT-5.4
98.2
GPT-5.3 Instant
97.2
GPT-5.4 is ahead overall, 90 to 87. The biggest single separator in this matchup is LiveCodeBench, where the scores are 84 and 75.
GPT-5.4 has the edge for knowledge tasks in this comparison, averaging 82.6 versus 80.8. Inside this category, MMLU-Pro is the benchmark that creates the most daylight between them.
GPT-5.4 has the edge for coding in this comparison, averaging 84.5 versus 78.7. Inside this category, LiveCodeBench is the benchmark that creates the most daylight between them.
GPT-5.4 has the edge for math in this comparison, averaging 98.2 versus 97.2. Inside this category, AIME 2025 is the benchmark that creates the most daylight between them.
GPT-5.4 has the edge for reasoning in this comparison, averaging 95.8 versus 94.2. Inside this category, LongBench v2 is the benchmark that creates the most daylight between them.
GPT-5.4 has the edge for agentic tasks in this comparison, averaging 87.8 versus 82.9. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.
GPT-5.4 has the edge for multimodal and grounded tasks in this comparison, averaging 95.5 versus 95. Inside this category, OfficeQA Pro is the benchmark that creates the most daylight between them.
GPT-5.4 and GPT-5.3 Instant are effectively tied for instruction following here, both landing at 96 on average.
GPT-5.4 has the edge for multilingual tasks in this comparison, averaging 94.7 versus 93.4. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.
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