Claude Fable 5.1 vs Nemotron 3.5 Super VL (120B A12B): Specs & Benchmark Comparison
Claude Fable 5.1 is developed by Anthropic, while Nemotron 3.5 Super VL (120B A12B) comes from NVIDIA. Claude Fable 5.1 was released in September 2026, and Nemotron 3.5 Super VL (120B A12B) followed a month later in October 2026. Nemotron 3.5 Super VL (120B A12B) has a published size of about 120 billion parameters; Anthropic has not disclosed the parameter count of Claude Fable 5.1.
The two models share 2 published benchmarks. Claude Fable 5.1 leads on 2 of them. The widest gaps are on Humanity's Last Exam, where Claude Fable 5.1 scores 65.0% against 31.8%; GDPval-AA, where Claude Fable 5.1 scores 61.8% against 40.4%. Averaged across everything we track, Claude Fable 5.1 sits at 59.7% and Nemotron 3.5 Super VL (120B A12B) at 60.9%.
Nemotron 3.5 Super VL (120B A12B) is the cheaper API at $0.20 per million input tokens and $1 per million output tokens, roughly 50 times cheaper than Claude Fable 5.1 at $10 and $50. Claude Fable 5.1 takes the larger context window at 1M tokens, compared with 262K for Nemotron 3.5 Super VL (120B A12B). Claude Fable 5.1 accepts text and images as input, while Nemotron 3.5 Super VL (120B A12B) accepts text, images, and video.
| Characteristic | Claude Fable 5.1 | Nemotron 3.5 Super VL (120B A12B) |
|---|---|---|
| Company | Anthropic | NVIDIA |
| Release Date | September 1, 2026 | October 15, 2026 |
| Parameters | — | 120B |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 262K |
| Context (output) | 128K | 262K |
| Input Price / 1M | $10.00 | $0.20 |
| Output Price / 1M | $50.00 | $1.00 |
| Average Score | 59.7% | 60.9% |
| Benchmarks | ||
| Humanity's Last Exam | 65.0% | 31.8% |
| GDPval-AA | 61.8% | 40.4% |
Visual Benchmark Comparison
Verdict
Nemotron 3.5 Super VL (120B A12B) leads in 2 out of 4 comparison categories.
Both models show comparable average scores: Claude Fable 5.1 — 0.6, Nemotron 3.5 Super VL (120B A12B) — 0.6.
Nemotron 3.5 Super VL (120B A12B) is 50.0x cheaper: input $0.20/1M vs $10.00/1M tokens.
Claude Fable 5.1 supports a larger context: 1M vs 262K tokens.
Nemotron 3.5 Super VL (120B A12B) is newer: released 10/15/2026 vs 9/1/2026.
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Frequently Asked Questions
Which is better for coding — Claude Fable 5.1 or Nemotron 3.5 Super VL (120B A12B)?
Which model is cheaper — Claude Fable 5.1 or Nemotron 3.5 Super VL (120B A12B)?
Which has a larger context window — Claude Fable 5.1 or Nemotron 3.5 Super VL (120B A12B)?
The Claude Fable 5.1 and Nemotron 3.5 Super VL (120B A12B) comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Fable 5.1 or Nemotron 3.5 Super VL (120B A12B) page. See also the complete list of AI model comparisons.