The AI arena is free today

Open Superagent

Gemini 4 Carbon vs Grok-4

Gemini 4 Carbon leads the LLM Stats Score 58.8 to 33.3.

Google · xAI · Updated for 2026

Which is better?

Gemini 4 Carbon leads the overall LLM Stats Score 58.8 to 33.3, ranking #2 overall.

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

Choose Gemini 4 Carbon

  • overall performance matters — it scores 58.8 and ranks #2 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you want the most recent training data — it shipped Oct 2026

Choose Grok-4

  • you want predictable pricing at $3.00/M input and $15.00/M output

At a glance

The differences that matter most.

Gemini 4 Carbon
Google
Grok-4
xAI
Core performance indexes
LLM Stats Score
58.8
#2
33.3
#125
Reasoning
54.4
#5
32.4
#128
Coding
48.3
#3
17.3
#149
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$3.00 / M
Output price
— / M
$15.00 / M
Context window
—
256,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Gemini 4 Carbon
Grok-4
Vision
36.0#13
19.2#98
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

16 reported for Gemini 4 Carbon · 7 for Grok-4

No common benchmarks found

Gemini 4 Carbon and Grok-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 Grok-4 specifies input context (256,000 tokens). Only Grok-4 specifies output context (8,000 tokens).

Google
Gemini 4 Carbon
Input- tokens
Output- tokens
xAI
Grok-4
Input256,000 tokens
Output8,000 tokens
Tue Nov 03 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Gemini 4 Carbon and Grok-4 support multimodal inputs.

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

Gemini 4 Carbon

Text
Images
Audio
Video

Grok-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.

Gemini 4 Carbon

Proprietary

Closed source

Grok-4

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 4 Carbon was released on 2026-10-28, while Grok-4 was released on 2025-07-09.

Gemini 4 Carbon is 16 months newer than Grok-4.

Gemini 4 Carbon

Oct 28, 2026

4 days ago

1.3yr newer
Grok-4

Jul 9, 2025

1.3 years ago

Knowledge Cutoff

When training data ends

Grok-4 has a documented knowledge cutoff of 2024-12-31, while Gemini 4 Carbon's cutoff date is not specified.

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

Gemini 4 Carbon

—

Grok-4

Dec 2024

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

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

Gemini 4 Carbon
✓ Preferred
Grok-4
Open in Playground

FAQ

Common questions about Gemini 4 Carbon vs Grok-4.

Which is better, Gemini 4 Carbon or Grok-4?

Gemini 4 Carbon leads the LLM Stats Score 58.8 to 33.3. Gemini 4 Carbon is made by Google and Grok-4 is made by xAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini 4 Carbon compare to Grok-4 in benchmarks?

Gemini 4 Carbon scores Gray Swan IPI Benchmark: 100.0%, Vending-Bench 2: 100.0%, Graphwalks BFS >128k: 96.2%, WebDev Arena: 88.4%, SEC-bench Pro: 88.2%. Grok-4 scores AIME 2025: 91.7%, HMMT25: 90.0%, GPQA: 87.5%, LiveCodeBench: 79.0%, Humanity's Last Exam: 40.0%.

What are the context window sizes for Gemini 4 Carbon and Grok-4?

Gemini 4 Carbon supports an unknown number of tokens and Grok-4 supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 4 Carbon and Grok-4?

Key differences include LLM Stats Score (58.8 vs 33.3). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 4 Carbon and Grok-4?

Gemini 4 Carbon is developed by Google and Grok-4 is developed by xAI.

Related comparisons