Spell.so

Spell.so is a web-based AI agent platform that lets users create autonomous AI agents capable of browsing the internet, executing tasks, and working with plugins to accomplish complex goals. Users describe their objective in natural language, and Spell creates an agent that breaks it into subtasks and executes them autonomously. Agents can browse the web for research, interact with web applications, generate content, analyze data, and perform multi-step workflows without constant oversight. A key feature is parallel agent execution, allowing users to tackle several aspects of a project simultaneously. The platform includes a plugin library that extends agent capabilities to web scraping, document generation, data analysis, and third-party service integration. A transparent execution view shows each step the agent takes, its reasoning, and intermediate results, with the ability to intervene at any point. Spell supports GPT-4 and other language models as reasoning engines. Note: As of early 2026, Spell.so's website appears to redirect and may be undergoing changes or a pivot. Prospective users should verify current availability and pricing directly.