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Grok-4 Heavy vs Grok 4.7

Grok 4.7 leads the LLM Stats Score 48.5 to 40.7.

xAI · xAI · Updated for 2026

Which is better?

Grok 4.7 leads the overall LLM Stats Score 48.5 to 40.7, ranking #23 overall.

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 Grok 4.7

  • overall performance matters — it scores 48.5 and ranks #23 on LLM Stats
  • your work emphasizes coding — it leads those capability indexes

At a glance

The differences that matter most.

Grok-4 Heavy
xAI
Grok 4.7
xAI
Core performance indexes
LLM Stats Score
40.7
#56
48.5
#23
Reasoning
39.0
#60
37.4
#69
Coding
17.7
#118
40.1
#13
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$2.00 / M
Output price
— / M
$6.00 / M
Context window
—
500,000

Individual benchmarks

6 reported for Grok-4 Heavy · 23 for Grok 4.7

No common benchmarks found

Grok-4 Heavy and Grok 4.7don'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 Grok 4.7 specifies input context (500,000 tokens).

xAI
Grok-4 Heavy
Input- tokens
Output- tokens
xAI
Grok 4.7
Input500,000 tokens
Output- tokens
Tue Sep 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Grok-4 Heavy and Grok 4.7 support multimodal inputs.

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

Grok-4 Heavy

Text
Images
Audio
Video

Grok 4.7

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

Grok 4.7

Proprietary

Closed source

Release Timeline

When each model was launched

Grok 4.7 was released on 2026-09-21, while Grok-4 Heavy's release date is not specified.

We can confirm Grok 4.7's release timeline, but cannot make a direct age comparison without Grok-4 Heavy's release date.

Grok-4 Heavy

—

Grok 4.7

Sep 21, 2026

0 days ago

Knowledge Cutoff

When training data ends

Grok-4 Heavy has a knowledge cutoff of 2024-12-31, while Grok 4.7 has a cutoff of 2026-06-01.

Grok 4.7 has more recent training data (up to 2026-06-01), making it potentially better informed about events through that date compared to Grok-4 Heavy (2024-12-31).

Grok-4 Heavy

Dec 2024

Grok 4.7

Jun 2026

1.5 yr newer

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Grok-4 Heavy and Grok 4.7 side-by-side, then vote on the output you prefer.

Grok-4 Heavy
✓ Preferred
Grok 4.7
Open in Playground

FAQ

Common questions about Grok-4 Heavy vs Grok 4.7.

Which is better, Grok-4 Heavy or Grok 4.7?

Grok 4.7 leads the LLM Stats Score 48.5 to 40.7. Grok-4 Heavy is made by xAI and Grok 4.7 is made by xAI. 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 Grok 4.7 in benchmarks?

Grok-4 Heavy scores AIME 2025: 100.0%, HMMT25: 96.7%, GPQA: 88.4%, LiveCodeBench: 79.4%, USAMO25: 61.9%. Grok 4.7 scores BixBench MCQ: 88.4%, WMDP-Bio: 88.1%, WMDP-Cyber: 88.1%, WMDP-Chem: 84.9%, CyberGym: 80.3%.

What are the context window sizes for Grok-4 Heavy and Grok 4.7?

Grok-4 Heavy supports an unknown number of tokens and Grok 4.7 supports 500K 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 Grok 4.7?

Key differences include LLM Stats Score (40.7 vs 48.5). See the full comparison above for benchmark-by-benchmark results.

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