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

AI Captioning Tools (2026)
Top Choice
6 best AI caption generators for social video (2026)
· 5 min read
AI Subtitle Generators (2026)
Top Choice
7 best AI subtitle generators by workflow
· 5 min read
Video-to-Video AI Tools
Videos
5 best video-to-video AI tools (2026): restyle & edit
· 6 min read
AI video extenders guide with an illustrative timeline showing original footage followed by newly generated frames.
Videos
6 best AI video extenders: inputs, limits and costs
· 7 min read
AI Video Enhancers
Videos
Best AI video enhancers (2026): denoise, deblur & upscale
· 4 min read
Magic Hour editorial paper collage comparing pixelated and detailed AI video upscaling
Videos
Best free AI video upscalers online (2026): real limits
· 5 min read
AI Video Upscalers
Videos
7 best AI video upscalers, models & enhancers (2026)
· 6 min read
Edit Photos With Flux Kontext
Images
How to edit photos with FLUX.2: 10 practical recipes
· 6 min read
AI image generators for character consistency cover, with an illustrative three-view character sheet on a tablet.
Images
8 best AI image generators for consistent characters
· 10 min read
AI Video Model Benchmark
Videos
AI video model benchmark: 60 attempts across 5 models
· 4 min read
8,160 AI Video Jobs Tested editorial benchmark cover
Videos
AI video API latency benchmark: 30 days of real jobs
· 4 min read
VEO 3 vs Runway Gen-4
Videos
Veo 3 vs Runway Gen-4: a current, version-aware comparison
· 4 min read
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