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Nemotron 3 Ultra (free) vs Grok 4.20 Multi-Agent

Signal-by-Signal Comparison
SignalNemotron 3 Ultra (free)DeltaGrok 4.20 Multi-Agent
Capabilities
50
-33
83
Pricing
100
+3
98
Context window size
95
-5
100
Recency
100
--
100
Output Capacity
80
+60
20
Benchmarks
0
-86
86
Overall Result
2 wins
of 6
3 wins
Grok 4.20 Multi-Agent wins 3 of 6 signals

Score History

Score History (10 data points)
Nemotron 3 Ultra (free)Grok 4.20 Multi-Agent
Nemotron 3 Ultra (free)

40

current score

Leader

Grok 4.20 Multi-Agent

right now

Grok 4.20 Multi-Agent

87.9

current score

LMMarketCap.com
Interactive Price Comparison
100Kcalls/month
1,000tokens (~1,333 chars)
500tokens (~667 chars)

Nemotron 3 Ultra (free)

NVIDIA

Best Value
Per request$0.000000
Daily$0.00
Monthly$0.00
Annual$0.00

Grok 4.20 Multi-Agent

xAI

Per request$0.002500
Daily$8.33
Monthly$250.00
Annual$3000.00

Nemotron 3 Ultra (free) saves you $250.00/month

That's $3000.00/year compared to Grok 4.20 Multi-Agent at your current usage level of 100K calls/month.

100% cheaper
Choose Nemotron 3 Ultra (free) for cost optimization

Nemotron 3 Ultra (free) pricing:
Input:$0.00/M tokens
Output:$0.00/M tokens
Grok 4.20 Multi-Agent pricing:
Input:$1.25/M tokens
Output:$2.50/M tokens
Nemotron 3 Ultra (free)

NVIDIA

40

Composite Score

Winner
Grok 4.20 Multi-Agent

xAI

88

Composite Score

Signal-by-Signal Comparison
MetricNemotron 3 Ultra (free)Grok 4.20 Multi-AgentWinner
Overall Score
40
88
Grok 4.20 Multi-Agent
Rank#258#57
Grok 4.20 Multi-Agent
Quality Rank#258#57
Grok 4.20 Multi-Agent
Adoption Rank#258#57
Grok 4.20 Multi-Agent
Parameters550B----
Context Window1000K2000K
Grok 4.20 Multi-Agent
PricingFree$1.25/$2.50/M--
Signal Scores
Capabilities
50
83
Grok 4.20 Multi-Agent
Pricing
100
98
Nemotron 3 Ultra (free)
Context window size
95
100
Grok 4.20 Multi-Agent
Recency
100
100
Nemotron 3 Ultra (free)
Output Capacity
80
20
Nemotron 3 Ultra (free)
Benchmarks--
86
Grok 4.20 Multi-Agent
Benchmark Head-to-Head(11 benchmarks)
Nemotron 3: 0Grok 4.20: 0
Nemotron 3
Grok 4.20
Normalized 0-100%
MMLU
-91.5%
MMLU-Pro
-83.5%
GPQA Diamond
-82%
MATH-500
-95%
HumanEval
-95.5%
SWE-bench Verified
-70%
AIME 2024
-88%
IFEval
-91%
BBH
-90%
Arena Elo
-1462
LiveBench
-73%
Benchmark Interpretation

Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.

Nemotron 3 Ultra (free)Entry Level

Scores 40/100 (rank #258), placing it in the top 11% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
Grok 4.20 Multi-AgentElite Tier

Scores 88/100 (rank #57), placing it in the top 81% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

Grok 4.20 Multi-Agent has a 48-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.

When to Use Each Model

Choose Nemotron 3 Ultra (free) when you need:

  • High-volume production workloads where API costs must be minimized
  • Agentic applications using tool/function calling
  • Step-by-step reasoning and chain-of-thought problem solving
  • Self-hosted deployments where you need full control over the model

Choose Grok 4.20 Multi-Agent when you need:

  • Processing long documents or large codebases (2000K token context)
  • Multimodal workflows that require image understanding
  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
Nemotron 3 Ultra (free)
Input cost$0.00/M tokens
Output cost$0.00/M tokens
Cost per quality point$0.000
Est. monthly (1M tokens/day)$0.00
Grok 4.20 Multi-Agent
Input cost$1.25/M tokens
Output cost$2.50/M tokens
Cost per quality point$0.043
Est. monthly (1M tokens/day)$56.25

Compare the cost per quality point to find the best value for your specific workload.

Latency & Speed
Nemotron 3 Ultra (free)Faster
Speed score0/100
Grok 4.20 Multi-Agent
Speed score0/100

Both models have comparable response speeds. For most applications, the latency difference is negligible.

When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.

Example Use Cases

Code generation & review

Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring

Nemotron 3 Ultra (free)

Customer support chatbot

Suitable for user-facing chat with competitive response times. Nemotron 3 Ultra (free) also offers lower per-token costs for high-volume support

Nemotron 3 Ultra (free)

Long document analysis

Larger context window (2000K tokens) can process longer documents, contracts, and research papers in a single pass

Grok 4.20 Multi-Agent

Batch data extraction

Lower output pricing ($0.00/M) reduces costs when processing thousands of records daily

Nemotron 3 Ultra (free)

Creative writing & content

Higher overall composite score (88/100) correlates with better nuance, coherence, and style in long-form content

Grok 4.20 Multi-Agent

Image understanding & OCR

Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly

Grok 4.20 Multi-Agent
Which Should You Choose?
Our recommendation:
Grok 4.20 Multi-Agent

Grok 4.20 Multi-Agent clearly outperforms Nemotron 3 Ultra (free) with a significant 47.900000000000006-point lead. For most general use cases, Grok 4.20 Multi-Agent is the stronger choice. However, Nemotron 3 Ultra (free) may still excel in niche scenarios.

by NVIDIA

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • Choose for Cost - 100% lower pricing; better value at scale
  • Choose for Reliability - Higher uptime and faster response speeds
  • Choose for Prototyping - Stronger community support and better developer experience
  • Choose for Production - Wider enterprise adoption and proven at scale

by xAI

Consider for specialized use cases.

Capability Comparison
CapabilityNemotron 3 Ultra (free)Grok 4.20 Multi-Agent
Vision (Image Input)differs
Function Callingdiffers
Streaming
JSON Modediffers
Reasoning
Web Searchdiffers
Image Output
Monthly Cost Calculator
1,000tokens (600 in / 400 out)
100requests/day (3,000/month)

Nemotron 3 Ultra (free)

NVIDIA

Best Value
$0.000000
estimated monthly cost

Grok 4.20 Multi-Agent

xAI

$5.25
estimated monthly cost

Nemotron 3 Ultra (free) saves you $5.25/month

That's 100% cheaper than Grok 4.20 Multi-Agent at 1,000 tokens/request and 100 requests/day.

Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.

Parameters & Context
ParameterNemotron 3 Ultra (free)Grok 4.20 Multi-Agent
Context Window1M2M
Max Output Tokens65,536--
Open SourceYesNo
CreatedJun 4, 2026Mar 31, 2026
Last updated: 42m ago

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