The answer changes monthly. But in terms of broad impact:
- ChatGPT/Gemini: still the most flexible productivity tool.
- GitHub Copilot: changing how developers write, test, and navigate codebases.
- Notion AI and Microsoft Copilot: already embedded into knowledge work.
- Runway and Midjourney: transforming creative workflows.
- Zapier AI/N8N: automating entire business operations, no dev required.
But the most effective "tool" is invisible: it’s the person who knows when to use which, and why.
More on this later, and if you have a POV, please share it in the comments.