Battle of the Models

Compare specific LLM models, context windows, and capabilities.

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GPT-4o

S-TIER

OpenAI

Intelligence Score 92/100
Model Popularity 0 votes
Context Window 128K
Pricing Model Commercial / Paid
Commercial/Paid Model

GLM-4.5-Flash

A-TIER

Z.AI (GLM)

Intelligence Score 83/100
Context Window 128K
Pricing Model Free / Open
Model Popularity 0 votes
View Provider Analysis →
FINAL VERDICT

GPT-4o Wins

With an intelligence score of 92/100 vs 83/100, GPT-4o outperforms GLM-4.5-Flash by 9 points.

HEAD-TO-HEAD

Detailed Comparison

Feature
GPT-4o
GLM-4.5-Flash
Context Window
128K 128K
Architecture
Transformer (Proprietary) Transformer
Est. MMLU Score
~85-87% ~75-79%
Release Date
May-Nov 2024 2024
Pricing Model
Paid / Commercial Free Tier
Rate Limit (RPM)
10,000 RPM ~1 request/second (Flash models)
Daily Limit
Based on tier ~1,000 requests/day (Flash tier)
Capabilities
Vision Function Calling Streaming JSON Mode
No specific data
Performance Tier
A-Tier (Excellent) B-Tier (Strong)
Speed Estimate
Medium ⚡ Very Fast
Primary Use Case
General Purpose ⚡ Fast Chat & Apps
Model Size
~1.8T (estimated) Undisclosed
Limitations
  • API key required
  • Rate limits apply
  • Pay-per-token pricing
  • 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
Key Strengths
  • Advanced reasoning
  • Code generation
  • Creative writing
  • GLM-4.5-Flash & GLM-4.7-Flash Free Access
  • Strong Coding Benchmarks
  • OpenAI-Compatible Endpoint

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