GLM 5.2 vs Claude Fable 5: side-by-side summary

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

GLM 5.2, from Z.ai, has a 1,048,576-token context window and is priced at $0.4875/M tokens input, $1.56/M tokens output on OpenRouter.

Claude Fable 5, from Anthropic, has a 1,000,000-token context window and is priced at $10/M tokens input, $50/M tokens output on OpenRouter.

Context window

• GLM 5.2: 1,048,576 tokens
• Claude Fable 5: 1,000,000 tokens

Price

• GLM 5.2: $0.4875/M tokens input, $1.56/M tokens output
• Claude Fable 5: $10/M tokens input, $50/M tokens output

Provided by

• GLM 5.2: Z.ai
• Claude Fable 5: Anthropic

• GLM 5.2 model details, providers and pricing
• Claude Fable 5 model details, providers and pricing