Model Comparison

GPT-4 Turbo vs Grok-2

Grok-2 significantly outperforms across most benchmarks. Grok-2 is 3.8x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

GPT-4 Turbo outperforms in 0 benchmarks, while Grok-2 is better at 4 benchmarks (GPQA, HumanEval, MATH, MMLU).

Grok-2 significantly outperforms across most benchmarks.

Thu Apr 02 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Grok-2 costs less

For input processing, GPT-4 Turbo ($10.00/1M tokens) is 5.0x more expensive than Grok-2 ($2.00/1M tokens).

For output processing, GPT-4 Turbo ($30.00/1M tokens) is 3.0x more expensive than Grok-2 ($10.00/1M tokens).

In conclusion, GPT-4 Turbo is more expensive than Grok-2.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Thu Apr 02 2026 • llm-stats.com
OpenAI
GPT-4 Turbo
Input tokens$10.00
Output tokens$30.00
Best providerAzure
xAI
Grok-2
Input tokens$2.00
Output tokens$10.00
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Both models have the same input context window of 128,000 tokens. Grok-2 can generate longer responses up to 8,000 tokens, while GPT-4 Turbo is limited to 4,096 tokens.

OpenAI
GPT-4 Turbo
Input128,000 tokens
Output4,096 tokens
xAI
Grok-2
Input128,000 tokens
Output8,000 tokens
Thu Apr 02 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Grok-2 supports multimodal inputs, whereas GPT-4 Turbo does not.

Grok-2 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-2

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-2

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4 Turbo was released on 2024-04-09, while Grok-2 was released on 2024-08-13.

Grok-2 is 4 months newer than GPT-4 Turbo.

GPT-4 Turbo

Apr 9, 2024

2.0 years ago

Grok-2

Aug 13, 2024

1.6 years ago

4mo newer

Knowledge Cutoff

When training data ends

GPT-4 Turbo has a documented knowledge cutoff of 2023-12-31, while Grok-2'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-2's cutoff date.

GPT-4 Turbo

Dec 2023

Grok-2

—

Provider Availability

GPT-4 Turbo is available from Azure, OpenAI. Grok-2 is available from xAI.

GPT-4 Turbo

azure logo
Azure
Input Price:Input: $10.00/1MOutput Price:Output: $30.00/1M
openai logo
OpenAI
Input Price:Input: $10.00/1MOutput Price:Output: $30.00/1M

Grok-2

xai logo
xAI
Input Price:Input: $2.00/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI
xAI
Supports multimodal inputs
Less expensive input tokens
Less expensive output tokens
Higher GPQA score (56.0% vs 48.0%)
Higher HumanEval score (88.4% vs 87.1%)
Higher MATH score (76.1% vs 72.6%)
Higher MMLU score (87.5% vs 86.5%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4 Turbo
xAI
Grok-2

FAQ

Common questions about GPT-4 Turbo vs Grok-2

Grok-2 significantly outperforms across most benchmarks. GPT-4 Turbo is made by OpenAI and Grok-2 is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
GPT-4 Turbo scores MGSM: 88.5%, HumanEval: 87.1%, MMLU: 86.5%, DROP: 86.0%, MATH: 72.6%. Grok-2 scores DocVQA: 93.6%, HumanEval: 88.4%, MMLU: 87.5%, MATH: 76.1%, MMLU-Pro: 75.5%.
Grok-2 is 5.0x cheaper for input tokens. GPT-4 Turbo costs $10.00/M input and $30.00/M output via azure. Grok-2 costs $2.00/M input and $10.00/M output via xai.
GPT-4 Turbo supports 128K tokens and Grok-2 supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include input pricing ($10.00 vs $2.00/M), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.
GPT-4 Turbo is developed by OpenAI and Grok-2 is developed by xAI.