Battle of the Models

Compare specific LLM models, context windows, and capabilities.

GLM-4.5-Flash

A-TIER

Z.AI (GLM)

Intelligence Score 83/100

Model Popularity 0 votes

Context Window 128K

Pricing Model Free / Open

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S-TIER

Grok (xAI)

Intelligence Score 96/100

Context Window 2M

Pricing Model Commercial / Paid

Model Popularity 0 votes

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FINAL VERDICT

With an intelligence score of 96/100 vs 83/100, Grok 4.1 Fast outperforms GLM-4.5-Flash by 13 points.

HEAD-TO-HEAD

Feature	GLM-4.5-Flash	Grok 4.1 Fast
Context Window	128K	2M
Architecture	Transformer	Transformer
Est. MMLU Score	~75-79%	~92-95%
Release Date	2024	2024
Pricing Model	Free Tier	Paid / Commercial
Rate Limit (RPM)	~1 request/second (Flash models)	Varies (low for free tier)
Daily Limit	~1,000 requests/day (Flash tier)	Credit-based
Capabilities	No specific data	No specific data
Performance Tier	B-Tier (Strong)	S-Tier (Elite)
Speed Estimate	⚡ Very Fast	Medium
Primary Use Case	⚡ Fast Chat & Apps	General Purpose
Model Size	Undisclosed	Undisclosed
Limitations	Free Flash tier capped near 1 request/second Flagship GLM-5.2 model requires a paid plan Free-tier limits have changed more than once in the past year — verify on docs.z.ai	$25/month credit cap (generous but finite) Lower rate limits on free tier Vision models have smaller context
Key Strengths	GLM-4.5-Flash & GLM-4.7-Flash Free Access Strong Coding Benchmarks OpenAI-Compatible Endpoint	Monthly renewing $25 free credits OpenAI-compatible API (drop-in replacement) Real-time knowledge from X/Twitter data