MAI-Image-2.5 Pro and GPT Image 2 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
MAI-Image-2.5 Pro, from Microsoft, has a 4,096-token context window and is priced at $5/M tokens on OpenRouter.
GPT Image 2, from OpenAI, has a 400,000-token context window and is priced at $8/M tokens input, $8/M tokens output on OpenRouter.