# Claude Fable 5.1 vs Nemotron 3.5 Super VL 120B A12B

> Side-by-side benchmark comparison for Claude Fable 5.1 and Nemotron 3.5 Super VL 120B A12B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-fable-5-1-vs-nemotron-3-5-super-vl-120b-a12b
- Last updated: October 15, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Claude Fable 5.1 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Claude Fable 5.1 has the higher overall point estimate 83.18 to 49.51. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in agentic, where the averages are 80.9 for Claude Fable 5.1 and 44.2 for Nemotron 3.5 Super VL 120B A12B.
- The biggest single benchmark swing is HLE in Knowledge, with scores of 65% and 29.2%.
- Nemotron 3.5 Super VL 120B A12B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Claude Fable 5.1 | Nemotron 3.5 Super VL 120B A12B |
|----------|----------|----------|
| Creator | Anthropic | NVIDIA |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 83.18 | 49.51 |
| Benchmarks Covered | 33 | 19 |
| Pricing (input/output) | $10.00 / $50.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Directional only
- Claude Fable 5.1 public-lane score: 80.9 (Supported · #2/127)
- Nemotron 3.5 Super VL 120B A12B public-lane score: 44.2 (Estimated · #61/127)

| Benchmark | Claude Fable 5.1 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 55.80% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 | 52.6% | Coming soon | Coming soon |
| OSWorld 2.0 | 41.7% | Coming soon | Coming soon |
| AutomationBench | 31.4% | Coming soon | Coming soon |
| Toolathlon-Verified | 77.8% | Coming soon | Coming soon |
| Toolathlon Verified Pass@3 | 81.5% | Coming soon | Coming soon |
| Toolathlon Verified Pass³ | 73.1% | Coming soon | Coming soon |
| Toolathlon Verified avg. turns | 23.7 turns | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 85.0% | Coming soon | Coming soon |
| ApprenticeBench | 72% | Coming soon | Coming soon |
| CWE-bench v1 | 58.0% | Coming soon | Coming soon |
| MazeBench | 10% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 66.7% | Coming soon |
| τ²-bench Airline | Coming soon | 76.5% | Coming soon |
| τ³-bench results | Coming soon | 18.9% | Coming soon |
| BrowseComp | Coming soon | 78% | Coming soon |

### Coding

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: 76.8 (Supported · #3/150)
- Nemotron 3.5 Super VL 120B A12B public-lane score: Coming soon

| Benchmark | Claude Fable 5.1 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| Bug Hunt Bench | 43.0 fixes | Coming soon | Coming soon |
| SWE-bench Pro | 81.2% | 51.8% | Claude Fable 5.1 |
| SWE Multilingual | 89.1% | 67.7% | Claude Fable 5.1 |
| SWE Multimodal | 54.7% | Coming soon | Coming soon |
| DeepSWE | 67.4% | Coming soon | Coming soon |
| FrontierSWE v2 | 56.3% | Coming soon | Coming soon |
| ProgramBench | 87.6% | Coming soon | Coming soon |
| CursorBench 3.2 | 73.4% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 90.5% | Coming soon | Coming soon |
| CursorBench 4.0 | 51.8% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 40.2% | Coming soon | Coming soon |
| LiveCodeBench v6 | Coming soon | 88.2% | Coming soon |
| SWE-bench Verified | Coming soon | 71.1% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: 85.2 (#4/28)
- Nemotron 3.5 Super VL 120B A12B public-lane score: 73 (Unranked · 2 rankable rows)

| Benchmark | Claude Fable 5.1 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | 97.50% | Coming soon | Coming soon |
| ARC-AGI-2 | 90% | Coming soon | Coming soon |
| GraphWalks BFS 256K–1M | 65.0% | Coming soon | Coming soon |
| CritPt | Coming soon | 10.9% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: Coming soon
- Nemotron 3.5 Super VL 120B A12B public-lane score: 62 (Unranked · 5 rankable rows)

| Benchmark | Claude Fable 5.1 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| BabyVision | Coming soon | 29.6% | Coming soon |
| MMLongBench-Doc | Coming soon | 62.8% | Coming soon |
| V* | Coming soon | 85.6% | Coming soon |
| MathVision | Coming soon | 78.2% | Coming soon |
| CharXiv | Coming soon | 80.8% | Coming soon |

### Knowledge

- Winner: Directional only
- Claude Fable 5.1 public-lane score: 86.7 (Supported · #2/184)
- Nemotron 3.5 Super VL 120B A12B public-lane score: 51.8 (Estimated · #73/184)

| Benchmark | Claude Fable 5.1 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| HLE | 65% | 29.2% | Claude Fable 5.1 |
| HLE w/o tools | 60.9% | 31.8% | Claude Fable 5.1 |
| GPQA Diamond (Vals) | 93.4% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 92.4% | Coming soon | Coming soon |
| GPQA-D | Coming soon | 89.5% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: Coming soon
- Nemotron 3.5 Super VL 120B A12B public-lane score: 66.6 (#72/146)

| Benchmark | Claude Fable 5.1 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 1.0% | Coming soon | Coming soon |
| IFBench | Coming soon | 70.9% | Coming soon |

### Mathematics

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: 96.8 (Unranked · 2 rankable rows)
- Nemotron 3.5 Super VL 120B A12B public-lane score: Coming soon

| Benchmark | Claude Fable 5.1 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 90.175% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 87.805% | Coming soon | Coming soon |
| Apex Shortlist | Coming soon | 88.4% | Coming soon |

## FAQ

### Which is better overall, Claude Fable 5.1 or Nemotron 3.5 Super VL 120B A12B?

Claude Fable 5.1 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Claude Fable 5.1 and Nemotron 3.5 Super VL 120B A12B?

The widest category gap is in agentic, where the averages are 80.9 for Claude Fable 5.1 and 44.2 for Nemotron 3.5 Super VL 120B A12B.

### How many benchmarks does Claude Fable 5.1 cover on BenchLM?

Claude Fable 5.1 currently has 33 sourced benchmark scores on BenchLM.

### How many benchmarks does Nemotron 3.5 Super VL 120B A12B cover on BenchLM?

Nemotron 3.5 Super VL 120B A12B currently has 19 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Fable 5.1 vs Claude Fable 5](/compare/claude-fable-vs-claude-fable-5-1)
- [Nemotron 3.5 Super VL 120B A12B vs Claude Fable 5](/compare/claude-fable-vs-nemotron-3-5-super-vl-120b-a12b)
- [Claude Fable 5.1 vs Nemotron 3.5 Super VL 120B A12B NVFP4](/compare/claude-fable-5-1-vs-nemotron-3-5-super-vl-120b-a12b-nvfp4)
- [Nemotron 3.5 Super VL 120B A12B vs Nemotron 3.5 Super VL 120B A12B NVFP4](/compare/nemotron-3-5-super-vl-120b-a12b-vs-nemotron-3-5-super-vl-120b-a12b-nvfp4)

## Explore More

- [Claude Fable 5.1 profile](/models/claude-fable-5-1)
- [Nemotron 3.5 Super VL 120B A12B profile](/models/nemotron-3-5-super-vl-120b-a12b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)