GLM 5.3 vs KAT-Coder-Air V2.5: side-by-side summary

GLM 5.3 and KAT-Coder-Air V2.5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

GLM 5.3, from Z.ai, has a 1,048,576-token context window and is priced at $1.40/M tokens input, $4.40/M tokens output on OpenRouter.

KAT-Coder-Air V2.5, from kwaipilot, has a 256,000-token context window and is priced at $0.15/M tokens input, $0.60/M tokens output on OpenRouter.

Context window

• GLM 5.3: 1,048,576 tokens
• KAT-Coder-Air V2.5: 256,000 tokens

Price

• GLM 5.3: $1.40/M tokens input, $4.40/M tokens output
• KAT-Coder-Air V2.5: $0.15/M tokens input, $0.60/M tokens output

Provided by

• GLM 5.3: Z.ai
• KAT-Coder-Air V2.5: kwaipilot

• GLM 5.3 model details, providers and pricing
• KAT-Coder-Air V2.5 model details, providers and pricing