Model Comparison

Grok-4 Heavy vs MedGemma 4B ITWhich is better in 2026?

Comparing Grok-4 Heavy and MedGemma 4B IT across benchmarks, pricing, and capabilities.

Verdict: Grok-4 Heavy vs MedGemma 4B IT — which is better?

Grok-4 Heavy (by xAI) and MedGemma 4B IT (by Google) 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 Heavy if…

  • you are already invested in the xAI ecosystem

Choose MedGemma 4B IT if…

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

Comparative analysis across standard metrics

No common benchmarks found

Grok-4 Heavy and MedGemma 4B IT don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Input Capabilities

Supported data types and modalities

Both Grok-4 Heavy and MedGemma 4B IT support multimodal inputs.

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

Grok-4 Heavy

Text
Images
Audio
Video

MedGemma 4B IT

Text
Images
Audio
Video

License

Usage and distribution terms

Grok-4 Heavy is licensed under a proprietary license, while MedGemma 4B IT uses Health AI Developer Foundations terms of use.

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

Grok-4 Heavy

Proprietary

Closed source

MedGemma 4B IT

Health AI Developer Foundations terms of use

Open weights

Release Timeline

When each model was launched

MedGemma 4B IT was released on 2025-05-20, while Grok-4 Heavy's release date is not specified.

We can confirm MedGemma 4B IT's release timeline, but cannot make a direct age comparison without Grok-4 Heavy's release date.

Grok-4 Heavy

—

MedGemma 4B IT

May 20, 2025

1.0 years ago

Knowledge Cutoff

When training data ends

Grok-4 Heavy has a documented knowledge cutoff of 2024-12-31, while MedGemma 4B IT's cutoff date is not specified.

We can confirm Grok-4 Heavy's training data extends to 2024-12-31, but cannot make a direct comparison without MedGemma 4B IT's cutoff date.

Grok-4 Heavy

Dec 2024

MedGemma 4B IT

—

Outputs Comparison

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Key Takeaways

xAI

No standout differentiators in the data we have for this pair.

Google
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
xAI
Grok-4 Heavy
Google
MedGemma 4B IT

FAQ

Common questions about Grok-4 Heavy vs MedGemma 4B IT.

Which is better, Grok-4 Heavy or MedGemma 4B IT?

Grok-4 Heavy (xAI) and MedGemma 4B IT (Google) 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 Heavy compare to MedGemma 4B IT in benchmarks?

Grok-4 Heavy scores AIME 2025: 100.0%, HMMT25: 96.7%, GPQA: 88.4%, LiveCodeBench: 79.4%, USAMO25: 61.9%. MedGemma 4B IT scores MIMIC CXR: 88.9%, DermMCQA: 71.8%, PathMCQA: 69.8%, SlakeVQA: 62.3%, VQA-Rad: 49.9%.

What are the main differences between Grok-4 Heavy and MedGemma 4B IT?

Key differences include licensing (Proprietary vs Health AI Developer Foundations terms of use). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-4 Heavy and MedGemma 4B IT?

Grok-4 Heavy is developed by xAI and MedGemma 4B IT is developed by Google.

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