DeepSeek V4 Pro 0813 and Nex-N2.5-Mini 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 $0.5795/M tokens input, $1.738/M tokens output on OpenRouter.
Nex-N2.5-Mini, from nex-agi, has a 262,144-token context window and is priced by the provider serving it on OpenRouter.