Comparing two large language models (llm) models: features, pricing, pros and cons.

GLM-5.2GPT-5.5
ProviderZhipu AIOpenAI
PricingFree (open-source)$80–400/mo
Quality
9.3/10
9.1/10
Speed
8/10
8.4/10
Ease of use
6.5/10
8/10
Value
9/10
5/10
Context256K
TasksText Generation, Chatbots, Coding, Data Analysis, Translation, RAG / SearchText Generation, Chatbots, Coding, Data Analysis, Translation, RAG / Search
Pros
  • + Top open-weight for code
  • + MIT license
  • + Stable fallback
  • + Cheaper than 5.6
  • + Proven quality
Cons
  • Limited availability
  • Heavy hardware
  • No longer the top of the lineup

GLM-5.2

Strongest open coding model (June 2026, MIT); top-4 on Artificial Analysis. Limited availability.

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GPT-5.5

Previous OpenAI flagship — stable fallback, cheaper than GPT-5.6.

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