Head-to-head comparison across 3 benchmark categories
Claude Mythos Preview
84
Qwen3.5-122B-A10B
71
Pick Claude Mythos Preview if you want the stronger benchmark profile. Qwen3.5-122B-A10B only becomes the better choice if knowledge is the priority or you want the cheaper token bill.
Agentic
+27.5 difference
Coding
+11.8 difference
Knowledge
+4.9 difference
Claude Mythos Preview
Qwen3.5-122B-A10B
$25 / $125
$0 / $0
N/A
N/A
N/A
N/A
1M
262K
Pick Claude Mythos Preview if you want the stronger benchmark profile. Qwen3.5-122B-A10B only becomes the better choice if knowledge is the priority or you want the cheaper token bill.
Claude Mythos Preview is clearly ahead on the aggregate, 84 to 71. 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 53.4. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 82% to 49.4%. Qwen3.5-122B-A10B does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
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 Qwen3.5-122B-A10B. That is roughly Infinityx on output cost alone. Claude Mythos Preview gives you the larger context window at 1M, compared with 262K for Qwen3.5-122B-A10B.
Claude Mythos Preview is ahead overall, 84 to 71. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 82% and 49.4%.
Qwen3.5-122B-A10B has the edge for knowledge tasks in this comparison, averaging 79.8 versus 74.9. Claude Mythos Preview stays close enough that the answer can still flip depending on your workload.
Claude Mythos Preview has the edge for coding in this comparison, averaging 83.8 versus 72. Inside this category, SWE-bench Verified 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 53.4. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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