Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.5
91
Hy3 Preview
60
Verified leaderboard positions: GPT-5.5 #5 · Hy3 Preview unranked
Pick GPT-5.5 if you want the stronger benchmark profile. Hy3 Preview only becomes the better choice if coding is the priority or you want the cheaper token bill.
Agentic
+27.1 difference
Coding
+1.4 difference
Knowledge
+19.7 difference
GPT-5.5
Hy3 Preview
$5 / $30
$0 / $0
N/A
N/A
N/A
N/A
1M
256K
Pick GPT-5.5 if you want the stronger benchmark profile. Hy3 Preview only becomes the better choice if coding is the priority or you want the cheaper token bill.
GPT-5.5 is clearly ahead on the provisional aggregate, 91 to 60. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.5's sharpest advantage is in agentic, where it averages 81.5 against 54.4. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 82% to 54.4%. Hy3 Preview does hit back in coding, so the answer changes if that is the part of the workload you care about most.
GPT-5.5 is also the more expensive model on tokens at $5.00 input / $30.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Hy3 Preview. That is roughly Infinityx on output cost alone. GPT-5.5 gives you the larger context window at 1M, compared with 256K for Hy3 Preview.
GPT-5.5 is ahead on BenchLM's provisional leaderboard, 91 to 60. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 82% and 54.4%.
GPT-5.5 has the edge for knowledge tasks in this comparison, averaging 66.4 versus 46.7. Inside this category, AA-Omniscience Index is the benchmark that creates the most daylight between them.
Hy3 Preview has the edge for coding in this comparison, averaging 60 versus 58.6. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
GPT-5.5 has the edge for agentic tasks in this comparison, averaging 81.5 versus 54.4. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.
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