Runway is a general AI video studio with several leading video models, built for filmmakers rather than around songs: you generate short clips shot by shot and cut them to your track. Solmi starts from the finished song and turns it into a storyboarded music video with a performer who lip-syncs the lyrics.
Only for the music-video use case. Runway is a general AI video studio used for films, ads, and other hand-directed work, and Solmi doesn't replace that. But if you came to Runway to make a music video for a finished song, Solmi is built for it: it detects the lyrics, storyboards the song, lip-syncs a performer, and usually renders in 3–10 minutes, where Runway has you generate clips shot by shot and edit them together.
Yes, but it's a manual workflow. Runway's own music-video guide has you build the video shot by shot: you generate short clips, 2–10 seconds each with Gen-4.5, and assemble them into one edit against your song. The results can look superb, but there's no automatic lyric detection, and Gen-4.5 costs 12 credits a second. Solmi automates that workflow from a Suno link or an MP3.
It depends on how much you generate. Runway's Standard plan is $15/month ($12/month billed annually) for 625 credits, about 52 seconds of Gen-4.5 video, and Pro is $35/month for 2,250 credits. Solmi's Plus plan is $35/month for 2,000 credits, roughly 3–7 one-minute music videos, and every step shows its credit price before you run it. Both have a free start: Runway gives 125 credits once, and Solmi gives a one-time 100 music-video credits for a 20-second 480p preview with a watermark.
For film-style cinematic shots you direct one by one, Runway's models are among the best available, and its paid plans upscale to 4K. For finished music videos with detected lyrics and lip-sync, Solmi's output is competitive and arrives as a finished video in minutes.
Yes. A common split is Runway for bespoke B-roll and hero shots in an edited project, and Solmi for the full music video built from your Suno or Udio track, with lyrics detected and a performer who lip-syncs them.