Hy4 preview vs GLM 5.3 Flash: side-by-side summary

Hy4 preview and GLM 5.3 Flash are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Hy4 preview, from tencent, has a 1,048,576-token context window and is priced at $0.834/M tokens input, $2.501/M tokens output on OpenRouter.

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.

Context window

• Hy4 preview: 1,048,576 tokens
• GLM 5.3 Flash: 1,310,720 tokens

Price

• Hy4 preview: $0.834/M tokens input, $2.501/M tokens output
• GLM 5.3 Flash: $0.075/M tokens input, $0.25/M tokens output

Provided by

• Hy4 preview: tencent
• GLM 5.3 Flash: Z.ai

• Hy4 preview model details, providers and pricing
• GLM 5.3 Flash model details, providers and pricing