Price Per TokenPrice Per Token
OpenAI
OpenAI
vs
Z-ai

GPT-5 Mini vs GLM 4.5 Air

A detailed comparison of pricing, benchmarks, and capabilities

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Key Takeaways

GPT-5 Mini wins:

  • Larger context window
  • Faster response time
  • Higher intelligence benchmark
  • Better at coding
  • Better at math
  • Supports vision

GLM 4.5 Air wins:

  • Cheaper input tokens
  • Cheaper output tokens
Price Advantage
GLM 4.5 Air
Benchmark Advantage
GPT-5 Mini
Context Window
GPT-5 Mini
Speed
GPT-5 Mini

Pricing Comparison

Benchmark Comparison

Context & Performance

Capabilities

Feature Comparison

FeatureGPT-5 MiniGLM 4.5 Air
Vision (Image Input)
Tool/Function Calls
Reasoning Mode
Audio Input
Audio Output
PDF Input
Prompt Caching
Web Search

License & Release

PropertyGPT-5 MiniGLM 4.5 Air
LicenseProprietaryOpen Source
AuthorOpenAIZ-ai
ReleasedAug 2025Jul 2025

GPT-5 Mini Modalities

Input
textimagefile
Output
text

GLM 4.5 Air Modalities

Input
text
Output
text

Frequently Asked Questions

GLM 4.5 Air has cheaper input pricing at $0.13/M tokens. GLM 4.5 Air has cheaper output pricing at $0.85/M tokens.
GPT-5 Mini scores higher on coding benchmarks with a score of 35.3, compared to GLM 4.5 Air's score of 23.8.
GPT-5 Mini has a 400,000 token context window, while GLM 4.5 Air has a 131,072 token context window.
GPT-5 Mini supports vision. GLM 4.5 Air does not support vision.