DeepSeek V4 Pro 0813 and Qwen3.8 Flash are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
DeepSeek V4 Pro 0813, from DeepSeek, has a 1,048,576-token context window and is priced at $0.5808/M tokens input, $1.742/M tokens output on OpenRouter.
Qwen3.8 Flash, from Qwen, has a 1,000,000-token context window and is priced at $0.16/M tokens input, $0.47/M tokens output on OpenRouter.