Z.ai: GLM 5.2 (free)

Z.ai: GLM 5.2 (free) is a large language model API from Z.ai (Zhipu), part of its GLM 5.2 model family. It is currently routed free of charge on OpenRouter, which makes it well suited to prototyping and high-volume experimentation where per-token cost would otherwise dominate. A large 256K-token context window (≈384 pages of text) lets it take in whole books, large codebases, or lengthy transcripts in a single call. All prices on this page reflect OpenRouter's routed rates and are re-synced automatically every day; confirm against the provider's official pricing before committing to production.

• Z.ai: GLM 5.2 (free) Input price: $0/M tokens
• Z.ai: GLM 5.2 (free) Output price: $0/M tokens
• Context window: 256,000 tokens
• Provider: Z.ai (Zhipu)
• Model family: GLM 5.2
• Modalities: Text
• Data source: OpenRouter, updated daily