A mobile-first AI video editor by Captions (rebranded Mirage) that auto-captions, cuts, and dubs talking-head video and generates AI avatars and digital twins from a selfie.
Last verified · 2026-10-02 · by Moe Ameen
Captions is an AI video creation and editing app from the New York startup of the same name, which rebranded to Mirage in September 2025 and later merged its Mirage Studio avatar product back into the main app. It runs on iOS, Android, and web, and its pitch is to let you skip post-production: upload footage and it auto-generates styled captions (100+ languages), cuts scenes, overlays B-roll, strips filler words and pauses, corrects eye contact, cleans audio, and adds AI music — much of it driven by plain-language, text-based editing instead of a manual timeline.
The second half of the product is generative. Captions creates AI avatars and digital twins: build an AI actor from a selfie or a short clip and reuse that persona across new scripts, outfits, and backgrounds, or generate a talking "AI Creator" video from text. Its dubbing tool translates a video into dozens of languages with synced lip movement. The company is well funded — co-founded in 2021 by Gaurav Misra and Dwight Churchill, backed by Sequoia, Andreessen Horowitz, Index Ventures and others, with over $100 million raised — and the polish reflects it.
The honest boundary for a creator is scope. Captions — including its Create Clips tool, which can turn one long recording (a podcast or webinar, up to 3 hours or 10GB) into 30+ reframed, AI-ranked shorts — is still a video-only studio: it generates no carousels, blog articles, or newsletters, and it has no scheduler or multi-platform publisher. What comes out is always a finished video file you export and post yourself. Pricing is credit-based and iOS-anchored, and plan names and prices have shifted repeatedly across 2025–2026, so confirm current figures in the app.
Captions is a finishing studio: it turns raw footage or a script into clean, captioned, on-brand video — including batching a long recording into many shorts — better than almost anything on a phone. The gap opens the moment that video is done, because a feed of clips is still just video, and Captions has no way to turn it into other formats or distribute it. That multiply-and-distribute step is exactly what [Kompozy](/) is for, which makes the two slot together rather than compete.
The concrete workflow: make your hero video in Captions — a dubbed avatar explainer, a captioned talking-head, a polished clip — then drop it into Kompozy as the source. Kompozy clips it into additional vertical shorts, reframes each for TikTok, Reels, and Shorts, and spins the same source into formats Captions never touches: a brand-exact [Carousel](/glossary/hyperframes) walking through the key points, [Quote Graphics](/glossary/output-buckets) of the sharpest lines, a Blog Article for search, and an Email Newsletter for your list. A [Persona Brief](/glossary/persona-brief) keeps the voice and banned words consistent across all of it, and [Autopilot](/glossary/autopilot) schedules and publishes the whole set across eight social platforms plus blog and email with a per-post review step. Use Captions to make the one great video; use Kompozy to turn it into the week of posts that video should have become.
Captions is a mobile-first AI video editing app (the company rebranded to Mirage in September 2025) for iOS, Android, and web. It auto-generates styled captions in 100+ languages, cuts and cleans talking-head video with text-based editing, dubs video into dozens of languages with lip-sync, and generates AI avatars and digital twins from a selfie or short clip.
No. Captions finishes a video and you export it; there is no built-in scheduler or multi-platform publisher. Getting the clip onto TikTok, Reels, Shorts, LinkedIn, and so on is a manual upload. A content engine like Kompozy is what adds scheduled, multi-platform publishing around the video.
Yes — its Create Clips tool takes a long recording (a podcast or webinar, up to 3 hours or 10GB) and auto-generates up to 30+ clips, reframed and ranked by an AI virality score. What it still won't do is carry that source into other formats — no carousels, blog, or newsletter — which is where a content engine like Kompozy picks up.
Make the hero video in Captions, then bring the export into Kompozy. Kompozy clips and reframes it for each feed and spins the same source into a carousel, quote graphics, a blog article, and a newsletter in one brand voice, then schedules and publishes everything across eight social platforms plus blog and email. Captions makes the video; Kompozy multiplies and ships it.