NAPLES, FL (December 14, 2025) — Writing.io today announced the addition of xAI Grok and Google Gemini to its multi-model AI platform, bringing the total number of supported providers to four. Users can now access OpenAI GPT, Anthropic Claude, Google Gemini, and xAI Grok from a single interface.
With four providers available from a single login, users can switch between models in seconds without creating separate accounts or learning different tools. Every feature on the platform, including file uploads, web search, and Extended Thinking, works seamlessly across all four providers.
Alongside the new models, Writing.io also introduced Double Check, a feature that lets users have one AI model review another's response for accuracy and completeness. The feature gives users more confidence in AI-generated outputs, particularly for high-stakes work in healthcare, legal, finance, and government.
"No single model is the best at everything," said Kevin Fleming, Founder and CEO of Writing.io. "We built Writing.io so people don't have to choose. They can use the right model for the right task, and now they can get a second opinion built right in."
Writing.io now provides access to four leading AI providers alongside its professional AI courses, certifications, and a library of thousands of tasks and automations. The platform is used by professionals, teams, and organizations across more than a dozen industries.
About Writing.io
Writing.io is an AI-powered platform that gives individuals, teams, and organizations secure access to the latest AI models from a single interface. With built-in support for OpenAI GPT, Anthropic Claude, Google Gemini, and xAI Grok, Writing.io combines multi-model AI chat, professional certifications, and a growing library of thousands of AI-powered tasks and automations. The platform serves professionals across industries including education, government, healthcare, and enterprise. Writing.io is headquartered in Naples, Florida. To learn more, visit writing.io.
Media Contact
press@writing.io