Claude Fable 5.1 vs Nvidia Nemotron 3 Ultra 550B A55b Nvfp4
As of Oct 14, 2026, Claude Fable 5.1 leads Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Fable 5.1
Yes. SOTA in co-SOTA in Factuality.
Nvidia Nemotron 3 Ultra 550B A55b Nvfp4
#83 Best current rank: #83 in General LLM, as of Oct 14, 2026.
| Category | Claude Fable 5.1 | Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 |
|---|---|---|
| General LLM | #6 · Was SOTA · General LLM Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #83 · #83 in General LLM Margin 56.46258503401361 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #5 · Was SOTA · Reasoning Margin 4.109589041095887 LMArena leaderboard dataset · Oct 13, 2026 | #88 · #88 in Reasoning Margin 60.95890410958904 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #2 · Near-SOTA · Math Margin 2.2222222222222285 Epoch AI benchmarking hub · Sep 1, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding | #3 · Near-SOTA · Coding Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #3 · Near-SOTA · Coding › Agentic Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #5 · Near-SOTA · Coding › Web dev Margin 3.738317757009341 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #6 · Was SOTA · Long context Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #89 · #89 in Long context Margin 60.54421768707483 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #6 · #6 in Vision Margin 18.421052631578945 Epoch AI benchmarking hub · Sep 1, 2026 | — |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #83 · #83 in Factuality Margin 62.6865671641791 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 1, 2026 | — |
Claude Fable 5.1: $20 per 1M blended tokens.
Nvidia Nemotron 3 Ultra 550B A55b Nvfp4: price per 1M tokens is unset in the catalog.
Claude Fable 5.1: closed weights.
Nvidia Nemotron 3 Ultra 550B A55b Nvfp4: open weights.
General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 in General LLM at #6 against #83.
Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 in Reasoning at #5 against #88.
Long context: As of Oct 14, 2026, Claude Fable 5.1 leads Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 in Long context at #6 against #89.
Factuality: As of Oct 14, 2026, Claude Fable 5.1 leads Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 in Factuality at #1 against #83.
Claude Fable 5.1 · Nvidia Nemotron 3 Ultra 550B A55b Nvfp4
Claude Fable 5.1 or Nvidia Nemotron 3 Ultra 550B A55b Nvfp4?
As of Oct 14, 2026, Claude Fable 5.1 leads Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Fable 5.1 or Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 for General LLM?
As of Oct 14, 2026, Claude Fable 5.1 leads Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 in General LLM at #6 against #83.
Claude Fable 5.1 or Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 for Reasoning?
As of Oct 14, 2026, Claude Fable 5.1 leads Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 in Reasoning at #5 against #88.
Claude Fable 5.1 or Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 for Long context?
As of Oct 14, 2026, Claude Fable 5.1 leads Nvidia Nemotron 3 Ultra 550B A55b Nvfp4 in Long context at #6 against #89.