GPT-5.2 vs GLM 5: side-by-side summary

GPT-5.2 and GLM 5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

GPT-5.2, from OpenAI, has a 400,000-token context window and is priced at $1.75/M tokens input, $14/M tokens output on OpenRouter.

GLM 5, from Z.ai, has a 204,800-token context window and is priced at $0.60/M tokens input, $1.92/M tokens output on OpenRouter.

Context window

• GPT-5.2: 400,000 tokens
• GLM 5: 204,800 tokens

Price

• GPT-5.2: $1.75/M tokens input, $14/M tokens output
• GLM 5: $0.60/M tokens input, $1.92/M tokens output

Provided by

• GPT-5.2: OpenAI
• GLM 5: Z.ai

• GPT-5.2 model details, providers and pricing
• GLM 5 model details, providers and pricing