Model Comparison

Grok 4 Fast vs Qwen2-VL-72B-InstructWhich is better in 2026?

Comparing Grok 4 Fast and Qwen2-VL-72B-Instruct across benchmarks, pricing, and capabilities.

Verdict: Grok 4 Fast vs Qwen2-VL-72B-Instruct — which is better?

Grok 4 Fast (by xAI) and Qwen2-VL-72B-Instruct (by Alibaba Cloud / Qwen Team) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Choose Grok 4 Fast if…

  • you want the most recent training data — it shipped Aug 2025

Choose Qwen2-VL-72B-Instruct if…

  • you need open weights you can self-host or fine-tune
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Grok 4 Fast and Qwen2-VL-72B-Instruct don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

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
Alibaba Cloud / Qwen Team
Qwen2-VL-72B-Instruct
Input- tokens
Output- tokens
Sat Jun 06 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Grok 4 Fast and Qwen2-VL-72B-Instruct support multimodal inputs.

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

Grok 4 Fast

Text
Images
Audio
Video

Qwen2-VL-72B-Instruct

Text
Images
Audio
Video

License

Usage and distribution terms

Grok 4 Fast is licensed under a proprietary license, while Qwen2-VL-72B-Instruct uses tongyi-qianwen.

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

Grok 4 Fast

Proprietary

Closed source

Qwen2-VL-72B-Instruct

tongyi-qianwen

Open weights

Release Timeline

When each model was launched

Grok 4 Fast was released on 2025-08-28, while Qwen2-VL-72B-Instruct was released on 2024-08-29.

Grok 4 Fast is 12 months newer than Qwen2-VL-72B-Instruct.

Grok 4 Fast

Aug 28, 2025

9 months ago

12mo newer
Qwen2-VL-72B-Instruct

Aug 29, 2024

1.8 years ago

Knowledge Cutoff

When training data ends

Qwen2-VL-72B-Instruct has a documented knowledge cutoff of 2023-06-30, while Grok 4 Fast's cutoff date is not specified.

We can confirm Qwen2-VL-72B-Instruct's training data extends to 2023-06-30, but cannot make a direct comparison without Grok 4 Fast's cutoff date.

Grok 4 Fast

—

Qwen2-VL-72B-Instruct

Jun 2023

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

xAI
Larger context window (2,000,000 tokens)
Alibaba Cloud / Qwen Team

Qwen2-VL-72B-Instruct

View details

Alibaba Cloud / Qwen Team

Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
xAI
Grok 4 Fast
Alibaba Cloud / Qwen Team
Qwen2-VL-72B-Instruct

FAQ

Common questions about Grok 4 Fast vs Qwen2-VL-72B-Instruct.

Which is better, Grok 4 Fast or Qwen2-VL-72B-Instruct?

Grok 4 Fast (xAI) and Qwen2-VL-72B-Instruct (Alibaba Cloud / Qwen Team) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Grok 4 Fast compare to Qwen2-VL-72B-Instruct in benchmarks?

Grok 4 Fast scores SimpleQA: 95.0%, HMMT 2025: 93.3%, AIME 2025: 92.0%, GPQA: 85.7%, LiveCodeBench: 80.0%. Qwen2-VL-72B-Instruct scores DocVQAtest: 96.5%, VCR_en_easy: 91.9%, ChartQA: 88.3%, OCRBench: 87.7%, MMBench: 86.5%.

What are the context window sizes for Grok 4 Fast and Qwen2-VL-72B-Instruct?

Grok 4 Fast supports 2.0M tokens and Qwen2-VL-72B-Instruct 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 Qwen2-VL-72B-Instruct?

Key differences include licensing (Proprietary vs tongyi-qianwen). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok 4 Fast and Qwen2-VL-72B-Instruct?

Grok 4 Fast is developed by xAI and Qwen2-VL-72B-Instruct is developed by Alibaba Cloud / Qwen Team.

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