DeepSeek V4 Flash 0731 vs Solar Pro 4: side-by-side summary

DeepSeek V4 Flash 0731 and Solar Pro 4 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, $0.075/M tokens output on OpenRouter.

Solar Pro 4, from upstage, has a 524,288-token context window and is priced at $0.03/M tokens input, $0.12/M tokens output on OpenRouter.

Context window

• DeepSeek V4 Flash 0731: 1,310,720 tokens
• Solar Pro 4: 524,288 tokens

Price

• DeepSeek V4 Flash 0731: $0.03/M tokens input, $0.075/M tokens output
• Solar Pro 4: $0.03/M tokens input, $0.12/M tokens output

Provided by

• DeepSeek V4 Flash 0731: DeepSeek
• Solar Pro 4: upstage

• DeepSeek V4 Flash 0731 model details, providers and pricing
• Solar Pro 4 model details, providers and pricing