Grok-4 Fast Reasoning vs QwQ-32B-Preview
Comparing Grok-4 Fast Reasoning and QwQ-32B-Preview across benchmarks, pricing, and capabilities.
xAI · Alibaba Cloud / Qwen Team · Updated for 2026
Which is better?
Grok-4 Fast Reasoning and QwQ-32B-Preview trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, QwQ-32B-Preview is roughly 1.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Grok-4 Fast Reasoning also accepts a larger context window (2,000,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Grok-4 Fast Reasoning
- you process long inputs — it offers a 2,000,000 token context window
- you want the most recent training data — it shipped Aug 2025
Choose QwQ-32B-Preview
- cost matters — it's about 1.7x cheaper per token
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Individual benchmarks
0 reported for Grok-4 Fast Reasoning · 4 for QwQ-32B-Preview
Grok-4 Fast Reasoning and QwQ-32B-Previewdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Grok-4 Fast Reasoning ($0.20/1M tokens) is 1.3x more expensive than QwQ-32B-Preview ($0.15/1M tokens).
For output processing, Grok-4 Fast Reasoning ($0.50/1M tokens) is 2.5x more expensive than QwQ-32B-Preview ($0.20/1M tokens).
In conclusion, Grok-4 Fast Reasoning is more expensive than QwQ-32B-Preview.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Grok-4 Fast Reasoning accepts 2,000,000 input tokens compared to QwQ-32B-Preview's 32,768 tokens. QwQ-32B-Preview can generate longer responses up to 32,768 tokens, while Grok-4 Fast Reasoning is limited to 30,000 tokens.
Input capabilities
Documented input modalities across available providers
Grok-4 Fast Reasoning supports multimodal inputs, whereas QwQ-32B-Preview does not.
Grok-4 Fast Reasoning can handle both text and other forms of data like images, making it suitable for multimodal applications.
Grok-4 Fast Reasoning
QwQ-32B-Preview
License
Usage and distribution terms
Grok-4 Fast Reasoning is licensed under a proprietary license, while QwQ-32B-Preview uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
Grok-4 Fast Reasoning was released on 2025-08-28, while QwQ-32B-Preview was released on 2024-11-28.
Grok-4 Fast Reasoning is 9 months newer than QwQ-32B-Preview.
Aug 28, 2025
1.1 years ago
9mo newerNov 28, 2024
1.8 years ago
Knowledge Cutoff
When training data ends
QwQ-32B-Preview has a documented knowledge cutoff of 2024-11-28, while Grok-4 Fast Reasoning's cutoff date is not specified.
We can confirm QwQ-32B-Preview's training data extends to 2024-11-28, but cannot make a direct comparison without Grok-4 Fast Reasoning's cutoff date.
—
Nov 2024
Provider Availability
Grok-4 Fast Reasoning is available from xAI. QwQ-32B-Preview is available from DeepInfra, Hyperbolic, Fireworks, Together.
Grok-4 Fast Reasoning
QwQ-32B-Preview
Outputs Comparison
Judge for yourself.
Run your own prompts against Grok-4 Fast Reasoning and QwQ-32B-Preview side-by-side, then vote on the output you prefer.
FAQ
Common questions about Grok-4 Fast Reasoning vs QwQ-32B-Preview.