Head-to-head comparison across 2 benchmark categories
Claude Mythos Preview
84
Gemma 4 26B A4B
61
Pick Claude Mythos Preview if you want the stronger benchmark profile. Gemma 4 26B A4B only becomes the better choice if you want the cheaper token bill.
Knowledge
+25.7 difference
Multimodal
+18.9 difference
Claude Mythos Preview
Gemma 4 26B A4B
$25 / $125
$0 / $0
N/A
N/A
N/A
N/A
1M
256K
Pick Claude Mythos Preview if you want the stronger benchmark profile. Gemma 4 26B A4B only becomes the better choice if you want the cheaper token bill.
Claude Mythos Preview is clearly ahead on the aggregate, 84 to 61. 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 knowledge, where it averages 74.9 against 49.2. The single biggest benchmark swing on the page is HLE w/o tools, 56.8% to 8.7%.
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 Gemma 4 26B A4B. That is roughly Infinityx on output cost alone. Claude Mythos Preview gives you the larger context window at 1M, compared with 256K for Gemma 4 26B A4B.
Claude Mythos Preview is ahead overall, 84 to 61. The biggest single separator in this matchup is HLE w/o tools, where the scores are 56.8% and 8.7%.
Claude Mythos Preview has the edge for knowledge tasks in this comparison, averaging 74.9 versus 49.2. Inside this category, HLE w/o tools 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 73.8. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
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