The AI arena is free today

Open Superagent

Grok-4 Heavy vs Nemotron 3.5 Bolt (74B A9B 24GB)

Grok-4 Heavy leads the LLM Stats Score 40.7 to 29.9.

xAI · NVIDIA · Updated for 2026

Which is better?

Grok-4 Heavy leads the overall LLM Stats Score 40.7 to 29.9, ranking #71 overall.

In the 2 individual benchmarks reported for both models, Grok-4 Heavy wins 2; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Grok-4 Heavy

  • overall performance matters — it scores 40.7 and ranks #71 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 2 of 2 exact shared results

Choose Nemotron 3.5 Bolt (74B A9B 24GB)

  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Grok-4 Heavy
xAI
Nemotron 3.5 Bolt (74B A9B 24GB)
NVIDIA
Core performance indexes
LLM Stats Score
40.7
#71
29.9
#142
Reasoning
39.0
#73
29.2
#143
Coding
17.6
#134
14.8
#151
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Grok-4 Heavy
Nemotron 3.5 Bolt (74B A9B 24GB)
Math
41.7#8
23.6#135
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

6 reported for Grok-4 Heavy · 10 for Nemotron 3.5 Bolt (74B A9B 24GB)

2 shared

Grok-4 Heavy outperforms in 2 benchmarks (GPQA, Humanity's Last Exam), while Nemotron 3.5 Bolt (74B A9B 24GB) is better at 0 benchmarks.

Grok-4 Heavy significantly outperforms across most benchmarks.

Mon Oct 19 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Input capabilities

Documented input modalities across available providers

Both Grok-4 Heavy and Nemotron 3.5 Bolt (74B A9B 24GB) support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Grok-4 Heavy

Text
Images
Audio
Video

Nemotron 3.5 Bolt (74B A9B 24GB)

Text
Images
Audio
Video

License

Usage and distribution terms

Grok-4 Heavy is licensed under a proprietary license, while Nemotron 3.5 Bolt (74B A9B 24GB) uses OpenMDW License v1.1.

License differences may affect how you can use these models in commercial or open-source projects.

Grok-4 Heavy

Proprietary

Closed source

Nemotron 3.5 Bolt (74B A9B 24GB)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

Nemotron 3.5 Bolt (74B A9B 24GB) was released on 2026-10-15, while Grok-4 Heavy's release date is not specified.

We can confirm Nemotron 3.5 Bolt (74B A9B 24GB)'s release timeline, but cannot make a direct age comparison without Grok-4 Heavy's release date.

Grok-4 Heavy

—

Nemotron 3.5 Bolt (74B A9B 24GB)

Oct 15, 2026

4 days ago

Knowledge Cutoff

When training data ends

Grok-4 Heavy has a knowledge cutoff of 2024-12-31, while Nemotron 3.5 Bolt (74B A9B 24GB) has a cutoff of 2026-05-01.

Nemotron 3.5 Bolt (74B A9B 24GB) has more recent training data (up to 2026-05-01), making it potentially better informed about events through that date compared to Grok-4 Heavy (2024-12-31).

Grok-4 Heavy

Dec 2024

Nemotron 3.5 Bolt (74B A9B 24GB)

May 2026

1.4 yr newer

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Grok-4 Heavy and Nemotron 3.5 Bolt (74B A9B 24GB) side-by-side, then vote on the output you prefer.

Grok-4 Heavy
✓ Preferred
Nemotron 3.5 Bolt (74B A9B 24GB)
Open in Playground

FAQ

Common questions about Grok-4 Heavy vs Nemotron 3.5 Bolt (74B A9B 24GB).

Which is better, Grok-4 Heavy or Nemotron 3.5 Bolt (74B A9B 24GB)?

Grok-4 Heavy leads the LLM Stats Score 40.7 to 29.9. Grok-4 Heavy is made by xAI and Nemotron 3.5 Bolt (74B A9B 24GB) is made by NVIDIA. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Grok-4 Heavy compare to Nemotron 3.5 Bolt (74B A9B 24GB) in benchmarks?

Grok-4 Heavy scores AIME 2025: 100.0%, HMMT25: 96.7%, GPQA: 88.4%, LiveCodeBench: 79.4%, USAMO25: 61.9%. Nemotron 3.5 Bolt (74B A9B 24GB) scores PinchBench: 87.8%, GPQA: 86.4%, BrowseComp: 66.8%, AA-LCR: 64.1%, MCP Atlas: 52.2%.

What are the main differences between Grok-4 Heavy and Nemotron 3.5 Bolt (74B A9B 24GB)?

Key differences include LLM Stats Score (40.7 vs 29.9), licensing (Proprietary vs OpenMDW License v1.1). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-4 Heavy and Nemotron 3.5 Bolt (74B A9B 24GB)?

Grok-4 Heavy is developed by xAI and Nemotron 3.5 Bolt (74B A9B 24GB) is developed by NVIDIA.

Related comparisons