Grok Build 0.1 vs GLM 5.1: side-by-side summary

Grok Build 0.1 and GLM 5.1 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Grok Build 0.1, from SpaceXAI, has a 256,000-token context window and is priced at $1/M tokens input, $2/M tokens output on OpenRouter.

GLM 5.1, from Z.ai, has a 204,800-token context window and is priced at $0.91/M tokens input, $2.86/M tokens output on OpenRouter.

Context window

• Grok Build 0.1: 256,000 tokens
• GLM 5.1: 204,800 tokens

Price

• Grok Build 0.1: $1/M tokens input, $2/M tokens output
• GLM 5.1: $0.91/M tokens input, $2.86/M tokens output

Provided by

• Grok Build 0.1: SpaceXAI
• GLM 5.1: Z.ai

• Grok Build 0.1 model details, providers and pricing
• GLM 5.1 model details, providers and pricing