Model Comparison

Grok-3 vs ChatGPT-4o Latest

Grok-3 significantly outperforms across most benchmarks. ChatGPT-4o Latest is 1.4x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Grok-3 outperforms in 1 benchmarks (GPQA), while ChatGPT-4o Latest is better at 0 benchmarks.

Grok-3 significantly outperforms across most benchmarks.

Wed Jun 03 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

ChatGPT-4o Latest costs less

For input processing, Grok-3 ($3.00/1M tokens) is 1.2x more expensive than ChatGPT-4o Latest ($2.50/1M tokens).

For output processing, Grok-3 ($15.00/1M tokens) is 1.5x more expensive than ChatGPT-4o Latest ($10.00/1M tokens).

In conclusion, Grok-3 is more expensive than ChatGPT-4o Latest.*

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

Lowest available price from all providers
Wed Jun 03 2026 • llm-stats.com
xAI
Grok-3
Input tokens$3.00
Output tokens$15.00
Best providerxAI
OpenAI
ChatGPT-4o Latest
Input tokens$2.50
Output tokens$10.00
Best providerOpenAI
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. ChatGPT-4o Latest can generate longer responses up to 16,384 tokens, while Grok-3 is limited to 8,000 tokens.

xAI
Grok-3
Input128,000 tokens
Output8,000 tokens
OpenAI
ChatGPT-4o Latest
Input128,000 tokens
Output16,384 tokens
Wed Jun 03 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Grok-3 and ChatGPT-4o Latest support multimodal inputs.

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

Grok-3

Text
Images
Audio
Video

ChatGPT-4o Latest

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-3

Proprietary

Closed source

ChatGPT-4o Latest

Proprietary

Closed source

Release Timeline

When each model was launched

Grok-3 was released on 2025-02-17, while ChatGPT-4o Latest was released on 2024-05-13.

Grok-3 is 9 months newer than ChatGPT-4o Latest.

Grok-3

Feb 17, 2025

1.3 years ago

9mo newer
ChatGPT-4o Latest

May 13, 2024

2.1 years ago

Knowledge Cutoff

When training data ends

Grok-3 has a documented knowledge cutoff of 2024-11-17, while ChatGPT-4o Latest's cutoff date is not specified.

We can confirm Grok-3's training data extends to 2024-11-17, but cannot make a direct comparison without ChatGPT-4o Latest's cutoff date.

Grok-3

Nov 2024

ChatGPT-4o Latest

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Provider Availability

Grok-3 is available from xAI. ChatGPT-4o Latest is available from OpenAI.

Grok-3

xai logo
xAI
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

ChatGPT-4o Latest

openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

xAI
Higher GPQA score (84.6% vs 84.0%)
OpenAI
Less expensive input tokens
Less expensive output tokens
xAIGrok-3
OpenAIChatGPT-4o Latest
Compare in Playground

Detailed Comparison

AI Model Comparison Table
Feature
xAI
Grok-3
OpenAI
ChatGPT-4o Latest

FAQ

Common questions about Grok-3 vs ChatGPT-4o Latest.

Which is better, Grok-3 or ChatGPT-4o Latest?

Grok-3 significantly outperforms across most benchmarks. Grok-3 is made by xAI and ChatGPT-4o Latest is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Grok-3 compare to ChatGPT-4o Latest in benchmarks?

Grok-3 scores AIME 2024: 93.3%, AIME 2025: 93.3%, GPQA: 84.6%, LiveCodeBench: 79.4%, MMMU: 78.0%. ChatGPT-4o Latest scores GPQA: 84.0%.

Is Grok-3 cheaper than ChatGPT-4o Latest?

ChatGPT-4o Latest is 1.2x cheaper for input tokens. Grok-3 costs $3.00/M input and $15.00/M output via xai. ChatGPT-4o Latest costs $2.50/M input and $10.00/M output via openai.

What are the context window sizes for Grok-3 and ChatGPT-4o Latest?

Grok-3 supports 128K tokens and ChatGPT-4o Latest supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Grok-3 and ChatGPT-4o Latest?

Key differences include input pricing ($3.00 vs $2.50/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-3 and ChatGPT-4o Latest?

Grok-3 is developed by xAI and ChatGPT-4o Latest is developed by OpenAI.