Head-to-head comparison across 4 benchmark categories
Claude Mythos Preview
84
Qwen3.6 Plus
69
Pick Claude Mythos Preview if you want the stronger benchmark profile. Qwen3.6 Plus only becomes the better choice if you want the cheaper token bill.
Agentic
+19.3 difference
Coding
+18.9 difference
Knowledge
+8.9 difference
Multimodal
+13.9 difference
Claude Mythos Preview
Qwen3.6 Plus
$25 / $125
$0 / $0
N/A
N/A
N/A
N/A
1M
1M
Pick Claude Mythos Preview if you want the stronger benchmark profile. Qwen3.6 Plus only becomes the better choice if you want the cheaper token bill.
Claude Mythos Preview is clearly ahead on the aggregate, 84 to 69. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Mythos Preview's sharpest advantage is in agentic, where it averages 80.9 against 61.6. The single biggest benchmark swing on the page is HLE, 64.7% to 28.8%.
Claude Mythos Preview is also the more expensive model on tokens at $25.00 input / $125.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Qwen3.6 Plus. That is roughly Infinityx on output cost alone.
Claude Mythos Preview is ahead overall, 84 to 69. The biggest single separator in this matchup is HLE, where the scores are 64.7% and 28.8%.
Claude Mythos Preview has the edge for knowledge tasks in this comparison, averaging 74.9 versus 66. Inside this category, HLE is the benchmark that creates the most daylight between them.
Claude Mythos Preview has the edge for coding in this comparison, averaging 83.8 versus 64.9. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
Claude Mythos Preview has the edge for agentic tasks in this comparison, averaging 80.9 versus 61.6. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Claude Mythos Preview has the edge for multimodal and grounded tasks in this comparison, averaging 92.7 versus 78.8. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
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