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Grok-1.5 vs Nemotron 3.5 Bolt (74B A9B 24GB)

Nemotron 3.5 Bolt (74B A9B 24GB) leads the LLM Stats Score 29.9 to -3.0.

xAI · NVIDIA · Updated for 2026

Which is better?

Nemotron 3.5 Bolt (74B A9B 24GB) leads the overall LLM Stats Score 29.9 to -3.0, ranking #142 overall.

In the 1 individual benchmarks reported for both models, Nemotron 3.5 Bolt (74B A9B 24GB) wins 1; 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-1.5

  • you are already invested in the xAI ecosystem

Choose Nemotron 3.5 Bolt (74B A9B 24GB)

  • overall performance matters — it scores 29.9 and ranks #142 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Oct 2026
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Grok-1.5
xAI
Nemotron 3.5 Bolt (74B A9B 24GB)
NVIDIA
Core performance indexes
LLM Stats Score
-3.0
#364
29.9
#142
Reasoning
-2.5
#354
29.2
#143
Coding
-1.0
#269
14.8
#151
Cost, coverage & limits
Benchmark wins
0 of 1
1 of 1
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-1.5
Nemotron 3.5 Bolt (74B A9B 24GB)
Math
4.9#289
23.6#135
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

9 reported for Grok-1.5 · 10 for Nemotron 3.5 Bolt (74B A9B 24GB)

1 shared

Grok-1.5 outperforms in 0 benchmarks, while Nemotron 3.5 Bolt (74B A9B 24GB) is better at 1 benchmark (GPQA).

Nemotron 3.5 Bolt (74B A9B 24GB) significantly outperforms across most benchmarks.

Wed Oct 21 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Input capabilities

Documented input modalities across available providers

Nemotron 3.5 Bolt (74B A9B 24GB) supports multimodal inputs, whereas Grok-1.5 does not.

Nemotron 3.5 Bolt (74B A9B 24GB) can handle both text and other forms of data like images, making it suitable for multimodal applications.

Grok-1.5

Text
Images
Audio
Video

Nemotron 3.5 Bolt (74B A9B 24GB)

Text
Images
Audio
Video

License

Usage and distribution terms

Grok-1.5 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-1.5

Proprietary

Closed source

Nemotron 3.5 Bolt (74B A9B 24GB)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

Grok-1.5 was released on 2024-03-28, while Nemotron 3.5 Bolt (74B A9B 24GB) was released on 2026-10-15.

Nemotron 3.5 Bolt (74B A9B 24GB) is 31 months newer than Grok-1.5.

Grok-1.5

Mar 28, 2024

2.6 years ago

Nemotron 3.5 Bolt (74B A9B 24GB)

Oct 15, 2026

4 days ago

2.6yr newer

Knowledge Cutoff

When training data ends

Nemotron 3.5 Bolt (74B A9B 24GB) has a documented knowledge cutoff of 2026-05-01, while Grok-1.5's cutoff date is not specified.

We can confirm Nemotron 3.5 Bolt (74B A9B 24GB)'s training data extends to 2026-05-01, but cannot make a direct comparison without Grok-1.5's cutoff date.

Grok-1.5

—

Nemotron 3.5 Bolt (74B A9B 24GB)

May 2026

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Grok-1.5 and Nemotron 3.5 Bolt (74B A9B 24GB) side-by-side, then vote on the output you prefer.

Grok-1.5
✓ Preferred
Nemotron 3.5 Bolt (74B A9B 24GB)
Open in Playground

FAQ

Common questions about Grok-1.5 vs Nemotron 3.5 Bolt (74B A9B 24GB).

Which is better, Grok-1.5 or Nemotron 3.5 Bolt (74B A9B 24GB)?

Nemotron 3.5 Bolt (74B A9B 24GB) leads the LLM Stats Score 29.9 to -3.0. Grok-1.5 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-1.5 compare to Nemotron 3.5 Bolt (74B A9B 24GB) in benchmarks?

Grok-1.5 scores GSM8k: 90.0%, DocVQA: 85.6%, MMLU: 81.3%, HumanEval: 74.1%, MMMU: 53.6%. 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-1.5 and Nemotron 3.5 Bolt (74B A9B 24GB)?

Key differences include LLM Stats Score (-3.0 vs 29.9), multimodal support (no vs yes), licensing (Proprietary vs OpenMDW License v1.1). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-1.5 and Nemotron 3.5 Bolt (74B A9B 24GB)?

Grok-1.5 is developed by xAI and Nemotron 3.5 Bolt (74B A9B 24GB) is developed by NVIDIA.

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