5 free ai writing tools — instant results, no signup, powered by the best AI models available in 2026.
Every tool below runs on CoreAI's AI engine, which routes each request to a top model — GPT-5, Claude, Gemini, Llama — tuned for that specific task. They're free to use as often as you like; for unlimited chat and side-by-side model comparison, the full CoreAI app picks up where the tools leave off.
These 5 tools are free forever. The CoreAI app adds unlimited chat with GPT-5, Claude, Gemini and 300+ more models.