DeepSeek V4 Flash 0731 vs Hy4 preview: side-by-side summary

DeepSeek V4 Flash 0731 and Hy4 preview are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

DeepSeek V4 Flash 0731, from DeepSeek, has a 1,310,720-token context window and is priced at $0.03/M tokens input, $0.10/M tokens output on OpenRouter.

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.

Context window

• DeepSeek V4 Flash 0731: 1,310,720 tokens
• Hy4 preview: 1,048,576 tokens

Price

• DeepSeek V4 Flash 0731: $0.03/M tokens input, $0.10/M tokens output
• Hy4 preview: $0.834/M tokens input, $2.501/M tokens output

Provided by

• DeepSeek V4 Flash 0731: DeepSeek
• Hy4 preview: tencent

• DeepSeek V4 Flash 0731 model details, providers and pricing
• Hy4 preview model details, providers and pricing