Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GLM-5.1
83
Hy3 Preview
62
Verified leaderboard positions: GLM-5.1 #21 · Hy3 Preview unranked
Pick GLM-5.1 if you want the stronger benchmark profile. Hy3 Preview only becomes the better choice if you want the cheaper token bill or you need the larger 256K context window.
Agentic
+10.9 difference
Coding
+0.9 difference
Knowledge
+5.6 difference
GLM-5.1
Hy3 Preview
$1.4 / $4.4
$0 / $0
N/A
N/A
N/A
N/A
203K
256K
Pick GLM-5.1 if you want the stronger benchmark profile. Hy3 Preview only becomes the better choice if you want the cheaper token bill or you need the larger 256K context window.
GLM-5.1 is clearly ahead on the provisional aggregate, 83 to 62. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GLM-5.1's sharpest advantage is in agentic, where it averages 65.3 against 54.4. The single biggest benchmark swing on the page is HLE, 52.3% to 25.5%.
GLM-5.1 is also the more expensive model on tokens at $1.40 input / $4.40 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. Hy3 Preview gives you the larger context window at 256K, compared with 203K for GLM-5.1.
GLM-5.1 is ahead on BenchLM's provisional leaderboard, 83 to 62. The biggest single separator in this matchup is HLE, where the scores are 52.3% and 25.5%.
GLM-5.1 has the edge for knowledge tasks in this comparison, averaging 52.3 versus 46.7. Inside this category, HLE is the benchmark that creates the most daylight between them.
GLM-5.1 has the edge for coding in this comparison, averaging 60.9 versus 60. Hy3 Preview stays close enough that the answer can still flip depending on your workload.
GLM-5.1 has the edge for agentic tasks in this comparison, averaging 65.3 versus 54.4. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Estimates at 50,000 req/day · 1000 tokens/req average.
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