Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
GPT-5.4 is clearly ahead on the aggregate, 90 to 63. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.4's sharpest advantage is in coding, where it averages 84.5 against 41.4. The single biggest benchmark swing on the page is LiveCodeBench, 84 to 37.
GPT-5.4 is also the more expensive model on tokens at $2.50 input / $15.00 output per 1M tokens, versus $0.25 input / $2.00 output per 1M tokens for Seed-2.0-Lite. That is roughly 7.5x on output cost alone. GPT-5.4 is the reasoning model in the pair, while Seed-2.0-Lite 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. GPT-5.4 gives you the larger context window at 1.05M, compared with 256K for Seed-2.0-Lite.
Pick GPT-5.4 if you want the stronger benchmark profile. Seed-2.0-Lite 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-5.4
87.8
Seed-2.0-Lite
55.1
GPT-5.4
84.5
Seed-2.0-Lite
41.4
GPT-5.4
95.5
Seed-2.0-Lite
79.6
GPT-5.4
95.8
Seed-2.0-Lite
73
GPT-5.4
82.6
Seed-2.0-Lite
53.9
GPT-5.4
96
Seed-2.0-Lite
89
GPT-5.4
94.7
Seed-2.0-Lite
82.5
GPT-5.4
98.2
Seed-2.0-Lite
75
GPT-5.4 is ahead overall, 90 to 63. The biggest single separator in this matchup is LiveCodeBench, where the scores are 84 and 37.
GPT-5.4 has the edge for knowledge tasks in this comparison, averaging 82.6 versus 53.9. Inside this category, HLE 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 41.4. 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 75. Inside this category, HMMT Feb 2023 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 73. Inside this category, SimpleQA 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 55.1. Inside this category, Terminal-Bench 2.0 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 79.6. Inside this category, OfficeQA Pro is the benchmark that creates the most daylight between them.
GPT-5.4 has the edge for instruction following in this comparison, averaging 96 versus 89. Inside this category, IFEval is the benchmark that creates the most daylight between them.
GPT-5.4 has the edge for multilingual tasks in this comparison, averaging 94.7 versus 82.5. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.
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