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

Krea AI review cover with the official Krea logo and real-time image creation imagery
Face Swap
Krea AI review: real-time creation, pricing, API & alternatives
· 4 min read
OpenArt AI review cover with the official OpenArt logo and AI image creation imagery
Face Swap
OpenArt AI review: models, pricing, rights & alternatives
· 4 min read
Higgsfield AI review cover with the official Higgsfield logo and AI filmmaking workflow imagery
Face Swap
Higgsfield AI review: models, pricing, API & alternatives
· 7 min read
Median end-to-end completion time and successful-job sample size for 11 Magic Hour video API endpoints
Content Creation
How to evaluate AI media APIs: total time, cost and reliability
· 4 min read
Viewer feedback and user feedback compared as distinct product signals
Startups
Viewer feedback vs. user feedback: what each can actually tell you
· 4 min read
The same blue product bottle preserved across four cinematic AI video scenes
Videos
How to keep products consistent in AI videos: a practical workflow
· 5 min read
Video voice-changing workflow with original and transformed audio waveforms
Videos
How to change a voice in a video without sounding fake
· 3 min read
Talking-photo workflow compared across mobile devices
Images
Best AI talking-photo apps for mobile in 2026
· 4 min read
AI video production workflow from storyboard to finished mobile video
Videos
How to make AI videos: a complete workflow for 2026
· 3 min read
Image-to-video prompt workflow shown as an editorial motion contact sheet
Videos
Image-to-video prompts: 30 examples, templates and fixes
· 2 min read
Editorial collage of synthesizer keys, tape loops, waveforms and a tuning fork representing AI music generation
App Picks
7 Best AI Music Generators for Songs, Video & APIs
· 9 min read
Editorial illustration of a filmstrip moving from monochrome to color; not a restoration benchmark
Videos
4 best AI video colorizers: free trials, costs & workflow
· 5 min read
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