Compare GLM 5.3 Flash from Z.ai and DeepSeek V4 Flash 0731 from DeepSeek on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.


GLM 5.3 Flash and DeepSeek V4 Flash 0731 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
GLM 5.3 Flash, from Z.ai, has a 1,310,720-token context window and is priced at $0.075/M tokens input, $0.25/M tokens output on OpenRouter.
DeepSeek V4 Flash 0731, from DeepSeek, has a 1,310,720-token context window and is priced at $0.038/M tokens input, $0.55/M tokens output on OpenRouter.