Compare Nex-N2.5-Pro from nex-agi and Union Alpha from Stealth on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
Nex-N2.5-Pro and Union Alpha are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Nex-N2.5-Pro, from nex-agi, has a 262,144-token context window and is priced by the provider serving it on OpenRouter.
Union Alpha, from Stealth, has a 262,144-token context window and is free to use on OpenRouter.