DeepSeek-V4-Pro-0813 vs Grok-4 Heavy
DeepSeek-V4-Pro-0813 significantly outperforms across most benchmarks.
DeepSeek · xAI · Updated for 2026
Which is better?
DeepSeek-V4-Pro-0813 outperforms in 1 benchmarks (Humanity's Last Exam), while Grok-4 Heavy is better at 0 benchmarks. DeepSeek-V4-Pro-0813 significantly outperforms across most benchmarks.
Based on current benchmark, pricing, and model metadata for 2026.
Choose DeepSeek-V4-Pro-0813
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- you need open weights you can self-host or fine-tune
Choose Grok-4 Heavy
- you are already invested in the xAI ecosystem
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
DeepSeek-V4-Pro-0813 outperforms in 1 benchmarks (Humanity's Last Exam), while Grok-4 Heavy is better at 0 benchmarks.
DeepSeek-V4-Pro-0813 significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Context Window
Maximum input and output token capacity
Only DeepSeek-V4-Pro-0813 specifies input context (1,048,576 tokens). Only DeepSeek-V4-Pro-0813 specifies output context (393,216 tokens).
Input Capabilities
Supported data types and modalities
Grok-4 Heavy supports multimodal inputs, whereas DeepSeek-V4-Pro-0813 does not.
Grok-4 Heavy can handle both text and other forms of data like images, making it suitable for multimodal applications.
DeepSeek-V4-Pro-0813
Grok-4 Heavy
License
Usage and distribution terms
DeepSeek-V4-Pro-0813 is licensed under MIT, while Grok-4 Heavy uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
MIT
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
DeepSeek-V4-Pro-0813 was released on 2026-08-13, while Grok-4 Heavy's release date is not specified.
We can confirm DeepSeek-V4-Pro-0813's release timeline, but cannot make a direct age comparison without Grok-4 Heavy's release date.
Aug 13, 2026
1 weeks ago
—
Knowledge Cutoff
When training data ends
Grok-4 Heavy has a documented knowledge cutoff of 2024-12-31, while DeepSeek-V4-Pro-0813's cutoff date is not specified.
We can confirm Grok-4 Heavy's training data extends to 2024-12-31, but cannot make a direct comparison without DeepSeek-V4-Pro-0813's cutoff date.
—
Dec 2024
Outputs Comparison
Judge for yourself.
Run your own prompts against DeepSeek-V4-Pro-0813 and Grok-4 Heavy side-by-side, then vote on the output you prefer.
FAQ
Common questions about DeepSeek-V4-Pro-0813 vs Grok-4 Heavy.