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 75. 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 multimodal & grounded, where it averages 95 against 70.8. The single biggest benchmark swing on the page is MMMU-Pro, 95 to 64.
Pick GPT-5.3 Instant if you want the stronger benchmark profile. Qwen3.5 397B (Reasoning) only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
GPT-5.3 Instant
82.9
Qwen3.5 397B (Reasoning)
74.8
GPT-5.3 Instant
78.7
Qwen3.5 397B (Reasoning)
62.3
GPT-5.3 Instant
95
Qwen3.5 397B (Reasoning)
70.8
GPT-5.3 Instant
94.2
Qwen3.5 397B (Reasoning)
84.2
GPT-5.3 Instant
80.8
Qwen3.5 397B (Reasoning)
70.1
GPT-5.3 Instant
96
Qwen3.5 397B (Reasoning)
89
GPT-5.3 Instant
93.4
Qwen3.5 397B (Reasoning)
87.8
GPT-5.3 Instant
97.2
Qwen3.5 397B (Reasoning)
92.5
GPT-5.3 Instant is ahead overall, 87 to 75. The biggest single separator in this matchup is MMMU-Pro, where the scores are 95 and 64.
GPT-5.3 Instant has the edge for knowledge tasks in this comparison, averaging 80.8 versus 70.1. 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 62.3. 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 92.5. 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 84.2. Inside this category, LongBench v2 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 74.8. Inside this category, OSWorld-Verified 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 70.8. 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 89. 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 87.8. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.
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