Nex-N2-Mini and Phi 4 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Nex-N2-Mini, from nex-agi, has a 262,144-token context window and is priced at $0.025/M tokens input, $0.10/M tokens output on OpenRouter.
Phi 4, from Microsoft, has a 16,384-token context window and is priced at $0.07/M tokens input, $0.14/M tokens output on OpenRouter.