Which is better, Claude Opus 4.6 or Nemotron 3 Ultra 550B A55B?

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Claude Opus 4.6 vs Nemotron 3 Ultra 550B A55B

38 SHARED BENCHMARKS

Across 38 shared benchmarks, Claude Opus 4.6 scores higher on 30 and Nemotron 3 Ultra 550B A55B on 8. The widest gap is critpt, where Claude Opus 4.6 scores 12.6 against 3.1. Nemotron 3 Ultra 550B A55B is the cheaper of the two on tracked API pricing ($0.68 against $5.00 per million input tokens).

ANTHROPICVSNVIDIA38 SHARED30–8 HEAD-TO-HEAD

BenchmarkClaude Opus 4.6MARGINNemotron 3 Ultra 550B A55B

AA Agentic Index67.627.5

AA Intelligence44.938.3

AA-LCR74.371

AA-Omniscience13.7-0.4

aime_202696.794.2

Apex (Pass@1)34.584.8

Artificial Analysis Coding Index48.149.3

browsecomp86.844.4

critpt12.63.1

finance_agent76.753.7

gdpval55.946.7

GPQA Diamond91.387

HLE53.137.4

HLE (with tools)62.737.4

hmmt_feb_202696.278.8

IFBench62.581.7

imo_answer_bench75.392.3

livebench_agentic_coding4916.3

livebench_coding78.270.7

livebench_data_analysis69.954.5

livebench_instruction_following63.373.5

livebench_language83.370.8

livebench_math89.388.7

livebench_reasoning88.774.7

LiveCodeBench v688.889

MCP Atlas76.844.7

MMLU-Pro89.186.8

multichallenge5663.8

OmniScience Accuracy4722.6

OmniScience Non-Hallucination37.270.3

scicode5244.6

simplebench67.641.7

simpleqa_verified4732.4

SWE-bench Multilingual77.867.7

SWE-bench Verified80.870.7

Terminal-Bench Hard65.436.4

τ²-Bench Telecom (AA run)99.383.3

τ³-Bench72.422.6

Best tracked score per model per benchmark (default configuration; source-attributed). ↓ marks lower-is-better metrics. Open either model for its full surface, provenance and pricing. Quoted rates are the price-setter row we currently track for each model — its direct or vendor-official listing where one exists (anthropic-official, direct), otherwise the lowest tracked offer.