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Grok-4.20 Beta Reasoning vs Nemotron 3.5 Bolt (74B A9B 24GB)

Grok-4.20 Beta Reasoning and Nemotron 3.5 Bolt (74B A9B 24GB) are closely matched at 23.4 and 29.6 on the LLM Stats Score.

xAI · NVIDIA · Updated for 2026

Which is better?

Grok-4.20 Beta Reasoning and Nemotron 3.5 Bolt (74B A9B 24GB) are closely matched on the overall LLM Stats Score at 23.4 and 29.6.

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

Choose Grok-4.20 Beta Reasoning

  • you want predictable pricing at $2.00/M input and $6.00/M output

Choose Nemotron 3.5 Bolt (74B A9B 24GB)

  • 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-4.20 Beta Reasoning
xAI
Nemotron 3.5 Bolt (74B A9B 24GB)
NVIDIA
Core performance indexes
LLM Stats Score
23.4
#195
29.6
#146
Reasoning
15.0
#250
28.9
#146
Agents
2.8
#186
11.9
#127
Cost, coverage & limits
Benchmark wins
—
—
Input price
$2.00 / M
— / M
Output price
$6.00 / M
— / M
Context window
2,000,000
—

Individual benchmarks

1 reported for Grok-4.20 Beta Reasoning · 10 for Nemotron 3.5 Bolt (74B A9B 24GB)

No common benchmarks found

Grok-4.20 Beta Reasoning and Nemotron 3.5 Bolt (74B A9B 24GB)don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Grok-4.20 Beta Reasoning specifies input context (2,000,000 tokens). Only Grok-4.20 Beta Reasoning specifies output context (30,000 tokens).

xAI
Grok-4.20 Beta Reasoning
Input2,000,000 tokens
Output30,000 tokens
NVIDIA
Nemotron 3.5 Bolt (74B A9B 24GB)
Input- tokens
Output- tokens
Mon Oct 26 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Grok-4.20 Beta Reasoning 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-4.20 Beta Reasoning

Text
Images
Audio
Video

Nemotron 3.5 Bolt (74B A9B 24GB)

Text
Images
Audio
Video

License

Usage and distribution terms

Grok-4.20 Beta Reasoning 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-4.20 Beta Reasoning

Proprietary

Closed source

Nemotron 3.5 Bolt (74B A9B 24GB)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

Grok-4.20 Beta Reasoning was released on 2026-03-09, while Nemotron 3.5 Bolt (74B A9B 24GB) was released on 2026-10-15.

Nemotron 3.5 Bolt (74B A9B 24GB) is 7 months newer than Grok-4.20 Beta Reasoning.

Grok-4.20 Beta Reasoning

Mar 9, 2026

7 months ago

Nemotron 3.5 Bolt (74B A9B 24GB)

Oct 15, 2026

1 weeks ago

7mo 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-4.20 Beta Reasoning'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-4.20 Beta Reasoning's cutoff date.

Grok-4.20 Beta Reasoning

—

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-4.20 Beta Reasoning and Nemotron 3.5 Bolt (74B A9B 24GB) side-by-side, then vote on the output you prefer.

Grok-4.20 Beta Reasoning
✓ Preferred
Nemotron 3.5 Bolt (74B A9B 24GB)
Open in Playground

FAQ

Common questions about Grok-4.20 Beta Reasoning vs Nemotron 3.5 Bolt (74B A9B 24GB).

Which is better, Grok-4.20 Beta Reasoning or Nemotron 3.5 Bolt (74B A9B 24GB)?

Grok-4.20 Beta Reasoning and Nemotron 3.5 Bolt (74B A9B 24GB) are closely matched on the LLM Stats Score at 23.4 and 29.6. Grok-4.20 Beta Reasoning 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-4.20 Beta Reasoning compare to Nemotron 3.5 Bolt (74B A9B 24GB) in benchmarks?

Grok-4.20 Beta Reasoning scores Finance Agent v2: 28.5%. 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 context window sizes for Grok-4.20 Beta Reasoning and Nemotron 3.5 Bolt (74B A9B 24GB)?

Grok-4.20 Beta Reasoning supports 2.0M tokens and Nemotron 3.5 Bolt (74B A9B 24GB) supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Grok-4.20 Beta Reasoning and Nemotron 3.5 Bolt (74B A9B 24GB)?

Key differences include LLM Stats Score (23.4 vs 29.6), licensing (Proprietary vs OpenMDW License v1.1). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-4.20 Beta Reasoning and Nemotron 3.5 Bolt (74B A9B 24GB)?

Grok-4.20 Beta Reasoning is developed by xAI and Nemotron 3.5 Bolt (74B A9B 24GB) is developed by NVIDIA.

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