DeepSeek V4 Pro 0813 and Gemini 3.6 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 $0.435/M tokens input, $0.87/M tokens output on OpenRouter.
Gemini 3.6 Flash, from Google, has a 1,048,576-token context window and is priced at $1.50/M tokens input, $7.50/M tokens output on OpenRouter.