Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

Grok 3 vs NVIDIA: Nemotron 3 Ultra benchmark

Name: Grok 3 vs NVIDIA: Nemotron 3 Ultra AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Grok 3 (xAI) and NVIDIA: Nemotron 3 Ultra (nvidia) using the latest snapshots we have as of Aug 17, 2026. NVIDIA: Nemotron 3 Ultra wins on output price at $3.6/1M. NVIDIA: Nemotron 3 Ultra has the larger context window (512k tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

Share Analysis:

WhatsApp Telegram X / Post LinkedIn Reddit

xAI

Grok 3

Previous xAI generation before Grok 4. Kept for grok 3 vs grok 4.

Elo 1,405$15/1M out

nvidia

NVIDIA: Nemotron 3 Ultra

Auto-discovered from OpenRouter (nvidia/nemotron-3-ultra-550b-a55b). Preview until a second source matches.

$3.5999999999999996/1M out

Swap or Add Any Model to this Matchup

Instant pairwise benchmark recalculation across 400+ LLMs

Model A

Model B

Quick vs:vs Claude Opus 4.5 vs Claude Opus 4.6 vs Claude Sonnet 4.5 vs Claude 3.7 Sonnet

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Grok 3 (6)vsNVIDIA: Nemotron 3 Ultra (3)

Grok 3: 6W (67%)Overall: Grok 3NVIDIA: Nemotron 3 Ultra: 3W (33%)

← Grok 3NVIDIA: Nemotron 3 Ultra →

Grok 3 (4/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,405vs—

Coding Elo

—vs—

SWE-bench

51.4%vs—

LiveBench

60.2%vs—

GPQA Diamond

74.2%vs—

Grok 3: 4WNVIDIA: Nemotron 3 Ultra: 0W

Grok 3 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

88 tok/svs—

Time to first token

250 msvs—

Grok 3: 2WNVIDIA: Nemotron 3 Ultra: 0W

NVIDIA: Nemotron 3 Ultra (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$15/1Mvs$3.6/1M

Input price

$3/1Mvs$0.6/1M

Context window

131kvs512k

Grok 3: 0WNVIDIA: Nemotron 3 Ultra: 3W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageGrok 3 4/6

Preference Elo

No shared data

Throughput Speed

No shared data

Price Efficiency

NVIDIA: Nemotron 3 Ultra

$11.40/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,405

EloHigh is better

—

LiveBench

High is better

60.2%

LiveBenchHigh is better

—

SWE-bench

High is better

51.4%

SWE-benchHigh is better

—

GPQA

High is better

74.2%

GPQAHigh is better

—

TTFT

Low is better

250 ms

TTFTLow is better

—

Speed

High is better

88 tok/s

SpeedHigh is better

—

In $

Low is better

$3/1M

In $Low is better

$0.6/1M+400%

Out $

Low is better

$15/1M

Out $Low is better

$3.6/1M+317%

Context

High is better

131k

ContextHigh is better

512k+291%

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 77% with NVIDIA: Nemotron 3 Ultra

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

Grok 3$330.00 / mo

In: $105.00Out: $225.00

NVIDIA: Nemotron 3 Ultra$75.00 / mo

In: $21.00Out: $54.00

Estimated Cost Delta

NVIDIA: Nemotron 3 Ultra is estimated to save $255.00/month ($3,060/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
NVIDIA: Nemotron 3 Ultra:Pick NVIDIA: Nemotron 3 Ultra when you are optimizing output cost.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatNVIDIA: Nemotron 3 Ultra

Lower output list price ($3.6/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGNVIDIA: Nemotron 3 Ultra

Larger window (512k).

Screenshots / visionGrok 3

Grok 3 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	NVIDIA: Nemotron 3 Ultra	Lower output list price ($3.6/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	NVIDIA: Nemotron 3 Ultra	Larger window (512k).
Screenshots / vision	Grok 3	Grok 3 is the side marked multimodal in the catalog.

Community Sentiment

Cast Your Matchup Vote

0 total votes

Community Discussions (0)

No comments posted on this matchup yet. Be the first to share an evaluation note!

Share card

The real PNG is generated at /compare/grok-3-vs-nemotron-3-ultra-550b-a55b/opengraph-image for crawlers.

PNG

CompareLLM Matrix

Verified head-to-head card

LIVE

xAI

Grok 3

Elo 1,405

LiveBench60.2%

SWE-bench51.4%

Speed88 tok/s

Output cost$15/1M

nvidia

NVIDIA: Nemotron 3 Ultra

Elo n/a

LiveBench—

SWE-bench—

Speed—

Output cost$3.6/1M

Frequently Asked Questions

Which is better overall, Grok 3 or NVIDIA: Nemotron 3 Ultra?: We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, Grok 3 or NVIDIA: Nemotron 3 Ultra?: SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?: NVIDIA: Nemotron 3 Ultra output tokens are $3.6/1M versus $15/1M. Input prices and retry rates still move the real bill.
Which is faster, Grok 3 or NVIDIA: Nemotron 3 Ultra?: We do not have TTFT for both models.
Which has the larger context window?: NVIDIA: Nemotron 3 Ultra accepts 512k tokens versus 131k.
Can I self-host either model?: Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?: No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?: Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Grok 3 and NVIDIA: Nemotron 3 Ultra Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Grok 3 matchups →|All NVIDIA: Nemotron 3 Ultra matchups →

Grok 3 vs Grok 4 (next grok)Grok 4.6 vs Grok 3 Mistral Large 3 vs Grok 3 Doubao Pro 1.5 vs Grok 3 Yi-Lightning vs Grok 3 Gemini 2.0 Flash Thinking vs Grok 3

Grok 3 vs NVIDIA: Nemotron 3 Ultra benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Grok 3 (6)vsNVIDIA: Nemotron 3 Ultra (3)

Grok 3: 6W (67%)Overall: Grok 3NVIDIA: Nemotron 3 Ultra: 3W (33%)

← Grok 3NVIDIA: Nemotron 3 Ultra →

Grok 3 (4/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,405vs—

Coding Elo

—vs—

SWE-bench

51.4%vs—

LiveBench

60.2%vs—

GPQA Diamond

74.2%vs—

Grok 3: 4WNVIDIA: Nemotron 3 Ultra: 0W

Grok 3 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

88 tok/svs—

Time to first token

250 msvs—

Grok 3: 2WNVIDIA: Nemotron 3 Ultra: 0W

NVIDIA: Nemotron 3 Ultra (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$15/1Mvs$3.6/1M

Input price

$3/1Mvs$0.6/1M

Context window

131kvs512k

Grok 3: 0WNVIDIA: Nemotron 3 Ultra: 3W

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatNVIDIA: Nemotron 3 Ultra

Lower output list price ($3.6/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGNVIDIA: Nemotron 3 Ultra

Larger window (512k).

Screenshots / visionGrok 3

Grok 3 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	NVIDIA: Nemotron 3 Ultra	Lower output list price ($3.6/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	NVIDIA: Nemotron 3 Ultra	Larger window (512k).
Screenshots / vision	Grok 3	Grok 3 is the side marked multimodal in the catalog.

Frequently Asked Questions

Which is better overall, Grok 3 or NVIDIA: Nemotron 3 Ultra?

We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.

Which is better at coding, Grok 3 or NVIDIA: Nemotron 3 Ultra?

SWE-bench is missing for at least one model, so we do not rank coding from a single number.

Which is cheaper to run in production?

NVIDIA: Nemotron 3 Ultra output tokens are $3.6/1M versus $15/1M. Input prices and retry rates still move the real bill.

Which is faster, Grok 3 or NVIDIA: Nemotron 3 Ultra?

We do not have TTFT for both models.

Which has the larger context window?

NVIDIA: Nemotron 3 Ultra accepts 512k tokens versus 131k.

Can I self-host either model?

Neither model is marked open-weights here. You are comparing hosted APIs.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Grok 3 and NVIDIA: Nemotron 3 Ultra Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.