Runbo Li

Runbo Li

CEO of Magic Hour

Runbo Li is the Co-founder and CEO of Magic Hour, where he builds AI video and image tools for content creation. He is a Y Combinator W24 founder and former Data Scientist at Meta, where he worked on 0-1 consumer social products in New Product Experimentation. He writes about AI video generation, AI image creation, creative workflows, and creator tools.

Latest articles

Ghosts Beat Snakes, Sharks and Spiders editorial comparison cover

Ghosts Beat Snakes, Sharks and Spiders Combined in AI Fear Prompts

· 3 min read
Ghosts Beat Snakes, Sharks and Spiders Combined in AI Fear Prompts
Editorial collage of women and men depicted as teachers in AI video prompts

AI creators picture teachers as women twice as often as men

· 3 min read
AI creators picture teachers as women twice as often as men
Magnific AI review cover with the official Magnific logo and AI image upscaling imagery

Magnific AI review: Freepik migration, pricing & alternatives

· 5 min read
Magnific AI review: Freepik migration, pricing & alternatives
Krea AI review cover with the official Krea logo and real-time image creation imagery

Krea AI review: real-time creation, pricing, API & alternatives

· 6 min read
Krea AI review: real-time creation, pricing, API & alternatives
OpenArt AI review cover with the official OpenArt logo and AI image creation imagery

OpenArt AI review: models, pricing, rights & alternatives

· 6 min read
OpenArt AI review: models, pricing, rights & alternatives
Higgsfield AI review cover with the official Higgsfield logo and AI filmmaking workflow imagery

Higgsfield AI review: models, pricing, API & alternatives

· 9 min read
Higgsfield AI review: models, pricing, API & alternatives
Median end-to-end completion time and successful-job sample size for 11 Magic Hour video API endpoints

How to evaluate AI media APIs: total time, cost and reliability

· 4 min read
How to evaluate AI media APIs: total time, cost and reliability
Viewer feedback and user feedback compared as distinct product signals

Viewer feedback vs. user feedback: what each can actually tell you

· 4 min read
Viewer feedback vs. user feedback: what each can actually tell you
The same blue product bottle preserved across four cinematic AI video scenes

How to keep products consistent in AI videos: a practical workflow

· 6 min read
How to keep products consistent in AI videos: a practical workflow
Video voice-changing workflow with original and transformed audio waveforms

How to change a voice in a video without sounding fake

· 3 min read
How to change a voice in a video without sounding fake
Talking-photo workflow compared across mobile devices

Best AI talking-photo apps for mobile in 2027

· 6 min read
Best AI talking-photo apps for mobile in 2027
AI video production workflow from storyboard to finished mobile video

How to make AI videos: a complete workflow for 2027

· 5 min read
How to make AI videos: a complete workflow for 2027