The category-leading AI avatar video platform — paste a script, pick from 100s of stock avatars or clone your own, and render a narrated talking-head video in 140+ languages.
Last verified · 2026-10-23 · by Moe Ameen
Published 2026-09-14 · Updated
Short answer
Synthesia is an AI avatar video platform from a London company founded in 2017. You paste a script, pick a stock or custom avatar, and it renders a narrated talking-head video, with 1-click translation into 140+ languages. Plans run from a free Basic tier to Starter at $29 a month and Pro at $89 a month. It exports a file and does not clip, schedule, or publish to social feeds.
Key takeaways
Synthesia is an AI avatar video platform. You write or paste a script, choose an avatar and a voice, pick a language, and it renders a talking-head video with lip-synced narration — no camera, no studio, no reshoots. Founded in London in 2017, it is the tool most people picture when they hear "AI avatar video," and it is built for business use: corporate training, onboarding, product explainers, and internal communications rather than social feeds.
Two things set it apart. The first is breadth of avatars: a large stock library (well over a hundred avatars spanning ages, ethnicities, and styles, with the count rising on higher tiers) plus custom avatars, where you record a real person speaking and Synthesia builds a digital version that can say any script you type. The second, and its real signature, is localization: it supports 140+ languages, with 1-click translation and AI dubbing that regenerates the video with the avatar's lips re-synced to the new-language audio — so one script becomes dozens of localized versions without filming anything again.
Around the avatar sit the tools a corporate buyer expects: PowerPoint-to-video, an AI video assistant, brand kits, analytics, an API, and enterprise governance (SOC 2, GDPR, SSO, content controls). Pricing runs from a free Basic plan (10 minutes of video a month, watermarked) through Starter at $29 a month and Pro at $89 a month billed monthly ($18 and $64 a month billed yearly, with usage metered in credits) up to custom Enterprise. Because Synthesia revises plans, avatar counts, and language totals often, treat any specific figure here as a snapshot and confirm current numbers on its pricing page.
Synthesia is an excellent script-to-studio render engine, and at localized business video it leads the category. It is not a content operation. It makes one thing — avatar video — meters it by usage, and stops at the exported file. It does not clip long footage into shorts, generate carousels or images or blogs, size content for each platform, or schedule and publish anything.
Synthesia's superpower is turning one script into a wall of localized versions — the same explainer in English, Spanish, German, Japanese, each with the avatar's lips re-synced. But every one of those renders lands as a single MP4, metered against a monthly usage allowance, with nothing built to distribute it. A finished file per market is not a presence in that market. That is the exact gap Kompozy fills: it is a full generation and multi-platform publishing engine, so it takes each Synthesia export and turns it into a running, on-brand feed — per market, not just per file.
Drop a localized Synthesia video into Kompozy as a source and it does the part Synthesia never touches. It clips the render into vertical shorts, burns word-synced captions into the pixels styled to your brand and sized to each platform's safe zones, and — the real multiplier — spins the same topic into Carousel Posts, quote graphics, Photo Posts, a blog article, and an email newsletter that Synthesia cannot produce, every asset held to one Persona Brief so a market's whole channel reads as one voice.
Then Autopilot schedules and publishes the set across the eight social platforms plus blog and email behind a per-post review gate. There is also an economic angle: Synthesia's usage allowance is limited, so reserve it for the flagship localized explainer and let Kompozy generate the day-to-day Persona Shorts — its own HeyGen-based avatar video — so a daily social cadence never burns your Synthesia minutes.
This AI avatar video came out of the Kompozy workspace. It is here to show the format, so judge the avatar and captions, not the topic.
Best for:
Not ideal for:
Synthesia turns a text script into a narrated AI avatar video. It is built for business video — corporate training, onboarding, product explainers, and internal comms — where its depth of avatars and 140+ language localization let teams produce consistent, reshoot-free video at scale. It renders and exports a file; it is not a social publishing tool.
No. Synthesia renders and exports a video file with no clipping, per-platform sizing, scheduling, or publishing. To turn a Synthesia video into short-form posts across social platforms, you bring it into a content engine like Kompozy, which clips it, burns in captions, reframes it per platform, and publishes across the eight social platforms plus blog and email.
There is a free Basic plan with 10 watermarked video minutes a month. Paid tiers are $29/mo (Starter) and $89/mo (Pro) billed monthly, or $18/mo and $64/mo billed yearly, with usage metered in credits, plus a custom Enterprise tier with unlimited video minutes. Synthesia changes tiers often, so confirm current figures on its pricing page.
No. Synthesia generates whole talking-head videos from a script; it has no tool to cut long footage into short vertical clips or to pick the strongest moments. Clipping, feed-native captioning, and per-platform reframing are what a repurposing and publishing engine like Kompozy adds on top of a Synthesia export.
Render (and localize) in Synthesia, then drop the file into Kompozy. Kompozy clips it into captioned shorts and spins the same topic into carousels, quote graphics, Photo Posts, a blog, and a newsletter — formats Synthesia does not make — all in one brand voice, then schedules and publishes them across the eight social platforms plus blog and email.
We checked every figure and vendor claim on this page against the sources listed below on 2026-10-23, including Synthesia plan prices, avatar counts and the language total read off its live pricing page; we corrected the language count from 160+ to 140+ and the plan names to Starter and Pro. Kompozy plan and product details come from kompozy.io and kompozy.io/pricing.
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