Model Comparison
DeepSeek R1 Distill Qwen 1.5B vs Grok-4 HeavyWhich is better in 2026?
Grok-4 Heavy significantly outperforms across most benchmarks.
Verdict: DeepSeek R1 Distill Qwen 1.5B vs Grok-4 Heavy — which is better?
DeepSeek R1 Distill Qwen 1.5B (by DeepSeek) and Grok-4 Heavy (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.
DeepSeek R1 Distill Qwen 1.5B outperforms in 0 benchmarks, while Grok-4 Heavy is better at 2 benchmarks (GPQA, LiveCodeBench). Grok-4 Heavy significantly outperforms across most benchmarks.
Choose DeepSeek R1 Distill Qwen 1.5B if…
- you need open weights you can self-host or fine-tune
Choose Grok-4 Heavy if…
- you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
Performance Benchmarks
Comparative analysis across standard metrics
DeepSeek R1 Distill Qwen 1.5B outperforms in 0 benchmarks, while Grok-4 Heavy is better at 2 benchmarks (GPQA, LiveCodeBench).
Grok-4 Heavy significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Input Capabilities
Supported data types and modalities
Grok-4 Heavy supports multimodal inputs, whereas DeepSeek R1 Distill Qwen 1.5B does not.
Grok-4 Heavy can handle both text and other forms of data like images, making it suitable for multimodal applications.
DeepSeek R1 Distill Qwen 1.5B
Grok-4 Heavy
License
Usage and distribution terms
DeepSeek R1 Distill Qwen 1.5B 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 R1 Distill Qwen 1.5B was released on 2025-01-20, while Grok-4 Heavy's release date is not specified.
We can confirm DeepSeek R1 Distill Qwen 1.5B's release timeline, but cannot make a direct age comparison without Grok-4 Heavy's release date.
Jan 20, 2025
1.4 years ago
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Knowledge Cutoff
When training data ends
Grok-4 Heavy has a documented knowledge cutoff of 2024-12-31, while DeepSeek R1 Distill Qwen 1.5B'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 R1 Distill Qwen 1.5B's cutoff date.
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Dec 2024
Outputs Comparison
Key Takeaways
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against DeepSeek R1 Distill Qwen 1.5B and Grok-4 Heavy side-by-side, then vote on the output you prefer.
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FAQ
Common questions about DeepSeek R1 Distill Qwen 1.5B vs Grok-4 Heavy.