Model Comparison

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

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

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

GPT-4 Turbo (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 Turbo if…

  • you want predictable pricing at $10.00/M input and $30.00/M output

Choose Grok-1.5V if…

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

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

GPT-4 Turbo 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 Turbo specifies input context (128,000 tokens). Only GPT-4 Turbo specifies output context (4,096 tokens).

OpenAI
GPT-4 Turbo
Input128,000 tokens
Output4,096 tokens
xAI
Grok-1.5V
Input- tokens
Output- tokens
Sun Jul 05 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Grok-1.5V supports multimodal inputs, whereas GPT-4 Turbo does not.

Grok-1.5V can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-4 Turbo

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 Turbo

Proprietary

Closed source

Grok-1.5V

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4 Turbo was released on 2024-04-09, while Grok-1.5V was released on 2024-04-12.

Grok-1.5V is 0 month newer than GPT-4 Turbo.

GPT-4 Turbo

Apr 9, 2024

2.2 years ago

Grok-1.5V

Apr 12, 2024

2.2 years ago

3d newer

Knowledge Cutoff

When training data ends

GPT-4 Turbo has a documented knowledge cutoff of 2023-12-31, while Grok-1.5V's cutoff date is not specified.

We can confirm GPT-4 Turbo's training data extends to 2023-12-31, but cannot make a direct comparison without Grok-1.5V's cutoff date.

GPT-4 Turbo

Dec 2023

Grok-1.5V

—

Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (128,000 tokens)
xAI
Supports multimodal inputs

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against GPT-4 Turbo and Grok-1.5V side-by-side, then vote on the output you prefer.

GPT-4 Turbo
✓ Preferred
Grok-1.5V
Open in Playground
AI Model Comparison Table
Feature
OpenAI
GPT-4 Turbo
xAI
Grok-1.5V

FAQ

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

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

GPT-4 Turbo (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 Turbo compare to Grok-1.5V in benchmarks?

GPT-4 Turbo scores MGSM: 88.5%, HumanEval: 87.1%, MMLU: 86.5%, DROP: 86.0%, MATH: 72.6%. 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 Turbo and Grok-1.5V?

GPT-4 Turbo supports 128K 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.

What are the main differences between GPT-4 Turbo and Grok-1.5V?

Key differences include multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-4 Turbo and Grok-1.5V?

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

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