Grok-4.1 Fast Non-Reasoning vs Qwen3.5-397B-A17B
Comparing Grok-4.1 Fast Non-Reasoning and Qwen3.5-397B-A17B across benchmarks, pricing, and capabilities.
xAI · Alibaba Cloud / Qwen Team · Updated for 2026
Which is better?
Grok-4.1 Fast Non-Reasoning and Qwen3.5-397B-A17B trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, Grok-4.1 Fast Non-Reasoning is roughly 4.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Grok-4.1 Fast Non-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-4.1 Fast Non-Reasoning
- cost matters — it's about 4.0x cheaper per token
- you process long inputs — it offers a 2,000,000 token context window
Choose Qwen3.5-397B-A17B
- you want the most recent training data — it shipped Feb 2026
- 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-4.1 Fast Non-Reasoning · 38 for Qwen3.5-397B-A17B
Grok-4.1 Fast Non-Reasoning and Qwen3.5-397B-A17Bdon'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-4.1 Fast Non-Reasoning ($0.20/1M tokens) is 2.3x cheaper than Qwen3.5-397B-A17B ($0.45/1M tokens).
For output processing, Grok-4.1 Fast Non-Reasoning ($0.50/1M tokens) is 6.0x cheaper than Qwen3.5-397B-A17B ($3.00/1M tokens).
In conclusion, Qwen3.5-397B-A17B is more expensive than Grok-4.1 Fast Non-Reasoning.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Grok-4.1 Fast Non-Reasoning accepts 2,000,000 input tokens compared to Qwen3.5-397B-A17B's 262,144 tokens. Qwen3.5-397B-A17B can generate longer responses up to 262,144 tokens, while Grok-4.1 Fast Non-Reasoning is limited to 30,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Grok-4.1 Fast Non-Reasoning and Qwen3.5-397B-A17B support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Grok-4.1 Fast Non-Reasoning
Qwen3.5-397B-A17B
License
Usage and distribution terms
Grok-4.1 Fast Non-Reasoning is licensed under a proprietary license, while Qwen3.5-397B-A17B 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-4.1 Fast Non-Reasoning was released on 2025-11-17, while Qwen3.5-397B-A17B was released on 2026-02-16.
Qwen3.5-397B-A17B is 3 months newer than Grok-4.1 Fast Non-Reasoning.
Nov 17, 2025
10 months ago
Feb 16, 2026
7 months ago
3mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Grok-4.1 Fast Non-Reasoning is available from xAI. Qwen3.5-397B-A17B is available from DeepInfra, Novita.
Grok-4.1 Fast Non-Reasoning
Qwen3.5-397B-A17B
Outputs Comparison
Judge for yourself.
Run your own prompts against Grok-4.1 Fast Non-Reasoning and Qwen3.5-397B-A17B side-by-side, then vote on the output you prefer.
FAQ
Common questions about Grok-4.1 Fast Non-Reasoning vs Qwen3.5-397B-A17B.