Model comparison
Claude Mythos 5 vs Nemotron 3 Nano Omni 30B A3B
Head-to-head evidence from 2 shared benchmark results across 2 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude Mythos 5 #1 (Supported); Nemotron 3 Nano Omni 30B A3B #151 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude Mythos 5 and Nemotron 3 Nano Omni 30B A3B share 2 comparable benchmark results. 3 of 8 categories are comparable. 13 results are unique to Claude Mythos 5; 27 to Nemotron 3 Nano Omni 30B A3B.
Updated July 23, 2026- Shared results
- 2
- Claude Mythos 5 only
- 13
- Nemotron 3 Nano Omni 30B A3B only
- 27
- Comparable categories
- 3 / 8
Pick Claude Mythos 5 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.
Confidence note. This is a partial-evidence comparison with 2 shared benchmark results across 2 evidence categories; 3 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Claude Mythos 5 is clearly ahead on the BenchAlign aggregate, 83.93 to 44.24. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Mythos 5's sharpest advantage is in coding, where it averages 89.7 against 32. The single biggest benchmark swing on the page is GPQA, 94.1% 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 5 is also the more expensive model on tokens at $10.00 input / $50.00 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 5 gives you the larger context window at 1M+, compared with 256K for Nemotron 3 Nano Omni 30B A3B.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Claude Mythos 5 | Δ | Nemotron 3 Nano Omni 30B A3B |
|---|---|---|---|
| Coding | Claude Mythos 589.7 | Margin← 57.7 | Nemotron 3 Nano Omni 30B A3B32.0 |
| Multimodal | Claude Mythos 593.5 | Margin← 17.2 | Nemotron 3 Nano Omni 30B A3B76.3 |
| Knowledge | Claude Mythos 568.5 | Margin→ 7.8 | Nemotron 3 Nano Omni 30B A3B76.3 |
| Agentic | Claude Mythos 587.0 | MarginNo overlap | Nemotron 3 Nano Omni 30B A3BNot measured |
| Math | Claude Mythos 597.6 | MarginNo overlap | Nemotron 3 Nano Omni 30B A3BNot measured |
| Inst. Following | Claude Mythos 5Not measured | MarginNo overlap | Nemotron 3 Nano Omni 30B A3B74.2 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
GPQA
KnowledgeA 94.1%B 72.2%Winner: Claude Mythos 5Δ 21.9GPQA: Claude Mythos 5 scored 94.1%; Nemotron 3 Nano Omni 30B A3B scored 72.2%. Claude Mythos 5 wins this benchmark. - Source ↗
CharXiv
MultimodalA 93.5%B 76.3%Winner: Claude Mythos 5Δ 17.3CharXiv: Claude Mythos 5 scored 93.5%; Nemotron 3 Nano Omni 30B A3B scored 76.3%. Claude Mythos 5 wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude Mythos 5 | Nemotron 3 Nano Omni 30B A3B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude Mythos 5$10 input / $50 output | Nemotron 3 Nano Omni 30B A3B$0 input / $0 output | Nemotron 3 Nano Omni 30B A3B has the lower combined listed price. |
| Generation speedtokens per second | Claude Mythos 5Not available | Nemotron 3 Nano Omni 30B A3BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude Mythos 5Not available | Nemotron 3 Nano Omni 30B A3BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude Mythos 51M+ | Nemotron 3 Nano Omni 30B A3B256K | Claude Mythos 5 lists the larger context window. |
Benchmark Deep Dive
Agentic8 benchmarks
| Benchmark | Claude Mythos 5 | Nemotron 3 Nano Omni 30B A3B | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 88% | — | Not comparable |
| OSWorld-VerifiedSource | 85% | — | Not comparable |
| BrowseCompSource | 88% | — | Not comparable |
| ExploitGymSource | 17.5% | — | Not comparable |
| OSWorldSource | — | 47.4% | Not comparable |
| τ²-bench resultsSource | — | 45.3% | Not comparable |
| GDPval-AASource | — | 0.0% | Not comparable |
| GDPval-AASource | — | 467 | Not comparable |
CodingClaude Mythos 5 wins6 benchmarks
Reasoning2 benchmarks
KnowledgeNemotron 3 Nano Omni 30B A3B wins11 benchmarks
| Benchmark | Claude Mythos 5 | Nemotron 3 Nano Omni 30B A3B | Result |
|---|---|---|---|
| GPQASource | 94.1% | 72.2% | Claude Mythos 5 leads |
| HLESource | 64.5% | — | Not comparable |
| HLE w/o toolsSource | 59% | — | Not comparable |
| MMLU-ProSource | — | 77.3% | Not comparable |
| GPQA-DSource | — | 72.2% | Not comparable |
| Artificial Analysis Intelligence IndexSource | — | 14.9% | Not comparable |
| AA-GPQA DiamondSource | — | 46.9% | Not comparable |
| AA-HLESource | — | 5.3% | Not comparable |
| AA-Omniscience IndexSource | — | -56.0% | Not comparable |
| AA-Omniscience AccuracySource | — | 14.8% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 83.1% | Not comparable |
Math2 benchmarks
Multilingual1 benchmarks
| Benchmark | Claude Mythos 5 | Nemotron 3 Nano Omni 30B A3B | Result |
|---|---|---|---|
| SWE MultilingualSource | 92.2% | — | Not comparable |
MultimodalClaude Mythos 5 wins10 benchmarks
| Benchmark | Claude Mythos 5 | Nemotron 3 Nano Omni 30B A3B | Result |
|---|---|---|---|
| SWE-bench MultimodalSource | 54.9% | — | Not comparable |
| CharXivSource | 93.5% | 76.3% | Claude Mythos 5 leads |
| CharXiv w/o toolsSource | 88.9% | — | Not comparable |
| MMMUSource | — | 70.8% | Not comparable |
| MMLongBench-DocSource | — | 57.5% | Not comparable |
| ScreenSpot ProSource | — | 57.8% | Not comparable |
| Video-MME (w/o subtitle)Source | — | 72.2% | Not comparable |
| AI2D_TESTSource | — | 88.5% | Not comparable |
| RefCOCO (avg)Source | — | 90.5% | Not comparable |
| AA-MMMU-ProSource | — | 53.2% | Not comparable |
Frequently Asked Questions (4)
Which is better, Claude Mythos 5 or Nemotron 3 Nano Omni 30B A3B?
Claude Mythos 5 is ahead on BenchLM's BenchAlign leaderboard, 83.93 to 44.24. The biggest single separator in this matchup is GPQA, where the scores are 94.1% and 72.2%.
Which is better for knowledge tasks, Claude Mythos 5 or Nemotron 3 Nano Omni 30B A3B?
Nemotron 3 Nano Omni 30B A3B has the edge for knowledge tasks in this comparison, averaging 76.3 versus 68.5. Inside this category, GPQA is the benchmark that creates the most daylight between them.
Which is better for coding, Claude Mythos 5 or Nemotron 3 Nano Omni 30B A3B?
Claude Mythos 5 has the edge for coding in this comparison, averaging 89.7 versus 32. Nemotron 3 Nano Omni 30B A3B stays close enough that the answer can still flip depending on your workload.
Which is better for multimodal and grounded tasks, Claude Mythos 5 or Nemotron 3 Nano Omni 30B A3B?
Claude Mythos 5 has the edge for multimodal and grounded tasks in this comparison, averaging 93.5 versus 76.3. Inside this category, CharXiv is the benchmark that creates the most daylight between them.
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