GLM-4.6 vs Grok-4 Fast Non-Reasoning
Comparing GLM-4.6 and Grok-4 Fast Non-Reasoning across benchmarks, pricing, and capabilities.
Zhipu AI · xAI · Updated for 2026
Which is better?
GLM-4.6 and Grok-4 Fast Non-Reasoning trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, Grok-4 Fast Non-Reasoning is roughly 3.2x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Grok-4 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 GLM-4.6
- you want the most recent training data — it shipped Sep 2025
- you need open weights you can self-host or fine-tune
Choose Grok-4 Fast Non-Reasoning
- cost matters — it's about 3.2x cheaper per token
- you process long inputs — it offers a 2,000,000 token context window
At a glance
The differences that matter most.
Individual benchmarks
7 reported for GLM-4.6 · 0 for Grok-4 Fast Non-Reasoning
GLM-4.6 and Grok-4 Fast Non-Reasoningdon'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, GLM-4.6 ($0.50/1M tokens) is 2.5x more expensive than Grok-4 Fast Non-Reasoning ($0.20/1M tokens).
For output processing, GLM-4.6 ($2.00/1M tokens) is 4.0x more expensive than Grok-4 Fast Non-Reasoning ($0.50/1M tokens).
In conclusion, GLM-4.6 is more expensive than Grok-4 Fast Non-Reasoning.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Grok-4 Fast Non-Reasoning accepts 2,000,000 input tokens compared to GLM-4.6's 202,752 tokens. GLM-4.6 can generate longer responses up to 202,752 tokens, while Grok-4 Fast Non-Reasoning is limited to 30,000 tokens.
Input capabilities
Documented input modalities across available providers
Both GLM-4.6 and Grok-4 Fast Non-Reasoning support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GLM-4.6
Grok-4 Fast Non-Reasoning
License
Usage and distribution terms
GLM-4.6 is licensed under MIT, while Grok-4 Fast Non-Reasoning 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
GLM-4.6 was released on 2025-09-30, while Grok-4 Fast Non-Reasoning was released on 2025-08-28.
GLM-4.6 is 1 month newer than Grok-4 Fast Non-Reasoning.
Sep 30, 2025
11 months ago
1mo newerAug 28, 2025
1.1 years ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
GLM-4.6 is available from DeepInfra, Fireworks. Grok-4 Fast Non-Reasoning is available from xAI.
GLM-4.6
Grok-4 Fast Non-Reasoning
Outputs Comparison
Judge for yourself.
Run your own prompts against GLM-4.6 and Grok-4 Fast Non-Reasoning side-by-side, then vote on the output you prefer.
FAQ
Common questions about GLM-4.6 vs Grok-4 Fast Non-Reasoning.