Model Comparison

GPT-4 vs Grok-1.5VWhich is better in 2026?

Comparing GPT-4 and Grok-1.5V across benchmarks, pricing, and capabilities.

Verdict: GPT-4 vs Grok-1.5V — which is better?

GPT-4 (by OpenAI) and Grok-1.5V (by xAI) 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 GPT-4 if…

  • you want predictable pricing at $30.00/M input and $60.00/M output

Choose Grok-1.5V if…

  • you want the most recent training data — it shipped Apr 2024
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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

GPT-4 and Grok-1.5Vdon'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 GPT-4 specifies input context (32,768 tokens). Only GPT-4 specifies output context (32,768 tokens).

OpenAI
GPT-4
Input32,768 tokens
Output32,768 tokens
xAI
Grok-1.5V
Input- tokens
Output- tokens
Sat Jun 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-4 and Grok-1.5V support multimodal inputs.

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

GPT-4

Text
Images
Audio
Video

Grok-1.5V

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.

GPT-4

Proprietary

Closed source

Grok-1.5V

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4 was released on 2023-06-13, while Grok-1.5V was released on 2024-04-12.

Grok-1.5V is 10 months newer than GPT-4.

GPT-4

Jun 13, 2023

3.0 years ago

Grok-1.5V

Apr 12, 2024

2.2 years ago

10mo newer

Knowledge Cutoff

When training data ends

GPT-4 has a documented knowledge cutoff of 2022-12-31, while Grok-1.5V's cutoff date is not specified.

We can confirm GPT-4's training data extends to 2022-12-31, but cannot make a direct comparison without Grok-1.5V's cutoff date.

GPT-4

Dec 2022

Grok-1.5V

—

Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (32,768 tokens)
xAI

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

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4
xAI
Grok-1.5V

FAQ

Common questions about GPT-4 vs Grok-1.5V.

Which is better, GPT-4 or Grok-1.5V?

GPT-4 (OpenAI) and Grok-1.5V (xAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does GPT-4 compare to Grok-1.5V in benchmarks?

GPT-4 scores AI2 Reasoning Challenge (ARC): 96.3%, HellaSwag: 95.3%, Uniform Bar Exam: 90.0%, SAT Math: 89.0%, LSAT: 88.0%. Grok-1.5V scores AI2D: 88.3%, DocVQA: 85.6%, TextVQA: 78.1%, ChartQA: 76.1%, RealWorldQA: 68.7%.

What are the context window sizes for GPT-4 and Grok-1.5V?

GPT-4 supports 33K tokens and Grok-1.5V supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Who makes GPT-4 and Grok-1.5V?

GPT-4 is developed by OpenAI and Grok-1.5V is developed by xAI.

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