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Hy3 preview vs NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4

SpecHy3 previewNVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Respan Index28.7 (#87)28.8 (#86)
Blended price per 1M$0.285$0.925
Context window256K1M
Input / output per 1M$0.18 / $0.6$0.5 / $2.2
Max output--
Inputtexttext
Released2026-04-232026-06-04

Respan Index by category

Each category is scored 0 to 100, and how far ahead the winner is. Leads under a point are close to even.

CategoryHy3 previewNVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Coding11.5 Hy3 preview6.7 NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Agents36.8 Hy3 preview33.6 NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Reasoning27.2* Hy3 preview31.5 NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Knowledge & language24.0* Hy3 preview35.3 NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Human preference49.3 Hy3 preview49.0 NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4

* Estimated: no published scores in that category. How the Respan Index works

Benchmarks both report

Hy3 preview leads on 2 of the 3 benchmarks both report. Higher is better. Each score links to where it was published.

BenchmarkHy3 previewNVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
LMArena Elo14091427
BrowseComp67.1%41.4%
SWE-bench Verified74.4%69.7%

FAQ

Is Hy3 preview better than NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4?

NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 scores 28.8 on the Respan Index (#86), ahead of Hy3 preview at 28.7 (#87). Hy3 preview leads on 2 of the 3 benchmarks both report.

Which is cheaper, Hy3 preview or NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4?

Hy3 preview lists at $0.18 input and $0.6 output per 1M tokens; NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 at $0.5 and $2.2. Hy3 preview is 3.2x cheaper per token at list price.

Which has the larger context window?

Hy3 preview accepts 256K tokens and NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 1M tokens.

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