Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Mythos Preview
99
Nemotron 3 Nano Omni 30B A3B
56
Verified leaderboard positions: Claude Mythos Preview #1 · Nemotron 3 Nano Omni 30B A3B unranked
Pick Claude Mythos Preview if you want the stronger benchmark profile. Nemotron 3 Nano Omni 30B A3B only becomes the better choice if knowledge is the priority or you want the cheaper token bill.
Coding
+30.3 difference
Knowledge
+0.6 difference
Multimodal
+16.1 difference
Claude Mythos Preview
Nemotron 3 Nano Omni 30B A3B
$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. Nemotron 3 Nano Omni 30B A3B 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 provisional aggregate, 99 to 56. 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 coding, where it averages 83.8 against 53.5. The single biggest benchmark swing on the page is GPQA, 94.5% to 72.2%. Nemotron 3 Nano Omni 30B A3B 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 Nemotron 3 Nano Omni 30B A3B. That is roughly Infinityx on output cost alone. Claude Mythos Preview gives you the larger context window at 1M, compared with 256K for Nemotron 3 Nano Omni 30B A3B.
Claude Mythos Preview is ahead on BenchLM's provisional leaderboard, 99 to 56. The biggest single separator in this matchup is GPQA, where the scores are 94.5% and 72.2%.
Nemotron 3 Nano Omni 30B A3B has the edge for knowledge tasks in this comparison, averaging 75.5 versus 74.9. Inside this category, GPQA 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 53.5. Nemotron 3 Nano Omni 30B A3B stays close enough that the answer can still flip depending on your workload.
Claude Mythos Preview has the edge for multimodal and grounded tasks in this comparison, averaging 92.4 versus 76.3. Inside this category, CharXiv is the benchmark that creates the most daylight between them.
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