Model Comparison

Grok-4 Heavy vs Mistral Large 2Which is better in 2026?

Comparing Grok-4 Heavy and Mistral Large 2 across benchmarks, pricing, and capabilities.

Verdict: Grok-4 Heavy vs Mistral Large 2 — which is better?

Grok-4 Heavy (by xAI) and Mistral Large 2 (by Mistral AI) 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 Mistral Large 2 if…

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

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Grok-4 Heavy and Mistral Large 2don'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 Mistral Large 2 specifies input context (128,000 tokens). Only Mistral Large 2 specifies output context (128,000 tokens).

xAI
Grok-4 Heavy
Input- tokens
Output- tokens
Mistral AI
Mistral Large 2
Input128,000 tokens
Output128,000 tokens
Wed Jul 15 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Grok-4 Heavy supports multimodal inputs, whereas Mistral Large 2 does not.

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

Grok-4 Heavy

Text
Images
Audio
Video

Mistral Large 2

Text
Images
Audio
Video

License

Usage and distribution terms

Grok-4 Heavy is licensed under a proprietary license, while Mistral Large 2 uses Mistral Research License.

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

Grok-4 Heavy

Proprietary

Closed source

Mistral Large 2

Mistral Research License

Open weights

Release Timeline

When each model was launched

Mistral Large 2 was released on 2024-07-24, while Grok-4 Heavy's release date is not specified.

We can confirm Mistral Large 2's release timeline, but cannot make a direct age comparison without Grok-4 Heavy's release date.

Grok-4 Heavy

—

Mistral Large 2

Jul 24, 2024

2.0 years ago

Knowledge Cutoff

When training data ends

Grok-4 Heavy has a documented knowledge cutoff of 2024-12-31, while Mistral Large 2'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 Mistral Large 2's cutoff date.

Grok-4 Heavy

Dec 2024

Mistral Large 2

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

xAI
Supports multimodal inputs
Mistral AI
Larger context window (128,000 tokens)
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Grok-4 Heavy and Mistral Large 2 side-by-side, then vote on the output you prefer.

Grok-4 Heavy
✓ Preferred
Mistral Large 2
Open in Playground
AI Model Comparison Table
Feature
xAI
Grok-4 Heavy
Mistral AI
Mistral Large 2

FAQ

Common questions about Grok-4 Heavy vs Mistral Large 2.

Which is better, Grok-4 Heavy or Mistral Large 2?

Grok-4 Heavy (xAI) and Mistral Large 2 (Mistral AI) 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 Mistral Large 2 in benchmarks?

Grok-4 Heavy scores AIME 2025: 100.0%, HMMT25: 96.7%, GPQA: 88.4%, LiveCodeBench: 79.4%, USAMO25: 61.9%. Mistral Large 2 scores GSM8k: 93.0%, HumanEval: 92.0%, MT-Bench: 86.3%, MMLU: 84.0%, MMLU French: 82.8%.

What are the context window sizes for Grok-4 Heavy and Mistral Large 2?

Grok-4 Heavy supports an unknown number of tokens and Mistral Large 2 supports 128K 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 Heavy and Mistral Large 2?

Key differences include multimodal support (yes vs no), licensing (Proprietary vs Mistral Research License). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-4 Heavy and Mistral Large 2?

Grok-4 Heavy is developed by xAI and Mistral Large 2 is developed by Mistral AI.

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