GLM 5.1 vs Sonar Pro Search: side-by-side summary

GLM 5.1 and Sonar Pro Search are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

GLM 5.1, from Z.ai, has a 204,800-token context window and is priced at $0.9086/M tokens input, $2.856/M tokens output on OpenRouter.

Sonar Pro Search, from Perplexity, has a 200,000-token context window and is priced at $3/M tokens input, $15/M tokens output on OpenRouter.

Context window

• GLM 5.1: 204,800 tokens
• Sonar Pro Search: 200,000 tokens

Price

• GLM 5.1: $0.9086/M tokens input, $2.856/M tokens output
• Sonar Pro Search: $3/M tokens input, $15/M tokens output

Provided by

• GLM 5.1: Z.ai
• Sonar Pro Search: Perplexity

• GLM 5.1 model details, providers and pricing
• Sonar Pro Search model details, providers and pricing