Free AI Explainer Video Generator

Start with a prompt, a script, an uploaded file, or a URL, and Assistant drafts the video for you. You review an editable outline, adjust the script or visuals by chatting, then generate the finished video with an AI avatar and voiceover. Most videos are ready in about 10 minutes.

Yes. The Basic plan is free at $0 a month with no credit card required, and it includes 1,200 credits, enough for up to 10 minutes of finished video every month. You can create with avatars, voiceovers, and AI-generated visuals on the free plan. Downloading videos and removing the Synthesia logo come with paid plans, which start at $29 a month.

An explainer video is a short video that makes a product, service, or idea easy to understand. You will find them on landing pages, in onboarding, and across sales and marketing campaigns, where the goal is to communicate one message clearly and hold attention.

About 10 minutes from start to finish. You type or paste your content, choose an avatar and a template, and the video renders a few minutes after you click Generate. Because everything is built from text, making a new version later takes minutes rather than another shoot.

You can upload PowerPoint, PDF, Word, and TXT files, up to 10MB each, or paste a link to a public article or blog post. Assistant reads your source and writes a script from it. Files with pages over 4,500 words are rejected, so trim longer documents first.

Yes. Open the project any time to rewrite the script, swap the avatar, replace visuals, or edit screen recordings, then generate an updated version. Because the video is built from a script and modular scenes, updates take minutes, which keeps your content accurate when products or messaging change.

Yes. The AI Screen Recorder captures your screen inside Synthesia, then lets you trim the clip and drop it into your video. It works well for software demos and product walkthroughs, especially when an avatar explains what is happening on screen.

Yes. You can generate voiceovers in 140+ languages and accents from a library of 1000+ AI voices, or clone your own voice. For teams that need to localize finished videos, one-click Translation covers 140+ languages and is available on Enterprise.

With Synthesia, there is no per-video cost. You can make explainer videos free on the Basic plan, and paid plans start at $29 a month for unlimited videos within your credit allowance, so the price is your subscription, not each video. Hiring an agency instead means paying per project, which is why teams switch to making videos in-house.

You can make product explainers, SaaS and app walkthroughs, onboarding and training videos, marketing and promo clips, and feature announcements. The same workflow handles each one, so you can reuse templates and avatars across every type and hold a consistent look.