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Grok-4 Heavy vs Mistral Large 4

Grok-4 Heavy and Mistral Large 4 are closely matched at 40.6 and 46.2 on the LLM Stats Score.

xAI · Mistral AI · Updated for 2026

Which is better?

Grok-4 Heavy and Mistral Large 4 are closely matched on the overall LLM Stats Score at 40.6 and 46.2.

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

Choose Grok-4 Heavy

  • you are already invested in the xAI ecosystem

Choose Mistral Large 4

  • your work emphasizes coding — it leads those capability indexes

At a glance

The differences that matter most.

Grok-4 Heavy
xAI
Mistral Large 4
Mistral AI
Core performance indexes
LLM Stats Score
40.6
#66
46.2
#34
Reasoning
38.9
#69
44.0
#43
Coding
17.6
#128
35.8
#27
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$0.68 / M
Output price
— / M
$2.09 / M
Context window
—
1,000,000

Individual benchmarks

6 reported for Grok-4 Heavy · 18 for Mistral Large 4

No common benchmarks found

Grok-4 Heavy and Mistral Large 4don'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 Mistral Large 4 specifies input context (1,000,000 tokens).

xAI
Grok-4 Heavy
Input- tokens
Output- tokens
Mistral AI
Mistral Large 4
Input1,000,000 tokens
Output- tokens
Fri Oct 09 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Grok-4 Heavy and Mistral Large 4 support multimodal inputs.

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

Grok-4 Heavy

Text
Images
Audio
Video

Mistral Large 4

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Grok-4 Heavy

Proprietary

Closed source

Mistral Large 4

Proprietary

Closed source

Release Timeline

When each model was launched

Mistral Large 4 was released on 2026-10-06, while Grok-4 Heavy's release date is not specified.

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

Grok-4 Heavy

—

Mistral Large 4

Oct 6, 2026

2 days ago

Knowledge Cutoff

When training data ends

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

Grok-4 Heavy

Dec 2024

Mistral Large 4

—

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

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

Grok-4 Heavy
✓ Preferred
Mistral Large 4
Open in Playground

FAQ

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

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

Grok-4 Heavy and Mistral Large 4 are closely matched on the LLM Stats Score at 40.6 and 46.2. Grok-4 Heavy is made by xAI and Mistral Large 4 is made by Mistral AI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Grok-4 Heavy compare to Mistral Large 4 in benchmarks?

Grok-4 Heavy scores AIME 2025: 100.0%, HMMT25: 96.7%, GPQA: 88.4%, LiveCodeBench: 79.4%, USAMO25: 61.9%. Mistral Large 4 scores B3 AI Security Benchmark: 93.3%, CyBench: 93.0%, SciCode: 91.8%, KORABench: 84.5%, CyberGym: 82.0%.

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

Grok-4 Heavy supports an unknown number of tokens and Mistral Large 4 supports 1.0M 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 4?

Key differences include LLM Stats Score (40.6 vs 46.2). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-4 Heavy and Mistral Large 4?

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

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