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Grok 4 Fast vs Nemotron Labs Dory 1.0 (4B)

Grok 4 Fast leads the LLM Stats Score 31.4 to 22.1.

xAI · NVIDIA · Updated for 2026

Which is better?

Grok 4 Fast leads the overall LLM Stats Score 31.4 to 22.1, ranking #132 overall.

In the 2 individual benchmarks reported for both models, Grok 4 Fast 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 Fast

  • overall performance matters — it scores 31.4 and ranks #132 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 2 of 2 exact shared results

Choose Nemotron Labs Dory 1.0 (4B)

  • 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 Fast
xAI
Nemotron Labs Dory 1.0 (4B)
NVIDIA
Core performance indexes
LLM Stats Score
31.4
#132
22.1
#202
Reasoning
30.4
#138
19.8
#213
Coding
18.0
#131
2.9
#241
Agents
2.9
#185
-0.7
#198
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
$0.20 / M
— / M
Output price
$0.50 / M
— / M
Context window
2,000,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Grok 4 Fast
Nemotron Labs Dory 1.0 (4B)
Math
27.1#105
12.2#245
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

7 reported for Grok 4 Fast · 10 for Nemotron Labs Dory 1.0 (4B)

2 shared

Grok 4 Fast outperforms in 2 benchmarks (GPQA, Humanity's Last Exam), while Nemotron Labs Dory 1.0 (4B) is better at 0 benchmarks.

Grok 4 Fast significantly outperforms across most benchmarks.

Mon Oct 19 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Grok 4 Fast specifies input context (2,000,000 tokens). Only Grok 4 Fast specifies output context (30,000 tokens).

xAI
Grok 4 Fast
Input2,000,000 tokens
Output30,000 tokens
NVIDIA
Nemotron Labs Dory 1.0 (4B)
Input- tokens
Output- tokens
Mon Oct 19 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Grok 4 Fast supports multimodal inputs, whereas Nemotron Labs Dory 1.0 (4B) does not.

Grok 4 Fast can handle both text and other forms of data like images, making it suitable for multimodal applications.

Grok 4 Fast

Text
Images
Audio
Video

Nemotron Labs Dory 1.0 (4B)

Text
Images
Audio
Video

License

Usage and distribution terms

Grok 4 Fast is licensed under a proprietary license, while Nemotron Labs Dory 1.0 (4B) uses OpenMDW License v1.1.

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

Grok 4 Fast

Proprietary

Closed source

Nemotron Labs Dory 1.0 (4B)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

Grok 4 Fast was released on 2025-08-28, while Nemotron Labs Dory 1.0 (4B) was released on 2026-10-16.

Nemotron Labs Dory 1.0 (4B) is 14 months newer than Grok 4 Fast.

Grok 4 Fast

Aug 28, 2025

1.1 years ago

Nemotron Labs Dory 1.0 (4B)

Oct 16, 2026

1 days ago

1.1yr newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Grok 4 Fast and Nemotron Labs Dory 1.0 (4B) side-by-side, then vote on the output you prefer.

Grok 4 Fast
✓ Preferred
Nemotron Labs Dory 1.0 (4B)
Open in Playground

FAQ

Common questions about Grok 4 Fast vs Nemotron Labs Dory 1.0 (4B).

Which is better, Grok 4 Fast or Nemotron Labs Dory 1.0 (4B)?

Grok 4 Fast leads the LLM Stats Score 31.4 to 22.1. Grok 4 Fast is made by xAI and Nemotron Labs Dory 1.0 (4B) 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 Fast compare to Nemotron Labs Dory 1.0 (4B) in benchmarks?

Grok 4 Fast scores SimpleQA: 95.0%, HMMT 2025: 93.3%, AIME 2025: 92.0%, GPQA: 85.7%, LiveCodeBench: 80.0%. Nemotron Labs Dory 1.0 (4B) scores IFBench: 77.9%, GPQA: 72.4%, AA-LCR: 71.0%, SWE-Bench Verified: 59.5%, SciCode: 34.9%.

What are the context window sizes for Grok 4 Fast and Nemotron Labs Dory 1.0 (4B)?

Grok 4 Fast supports 2.0M tokens and Nemotron Labs Dory 1.0 (4B) 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 Fast and Nemotron Labs Dory 1.0 (4B)?

Key differences include LLM Stats Score (31.4 vs 22.1), multimodal support (yes vs no), licensing (Proprietary vs OpenMDW License v1.1). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok 4 Fast and Nemotron Labs Dory 1.0 (4B)?

Grok 4 Fast is developed by xAI and Nemotron Labs Dory 1.0 (4B) is developed by NVIDIA.

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