Synthesys

Overview

Synthesys is an AI video agent specifically engineered for marketing teams, unifying the entire video production workflow into a single, AI-orchestrated interface. It addresses the full content creation lifecycle—from scriptwriting and presenter selection to voice synthesis, lip-sync alignment, and final rendering—without requiring traditional editing skills. Established in London in 2020, the platform has generated more than 1,000,000 videos for over 50,000 creators and businesses, establishing a production model that promises near-instant turnaround and significant cost reductions compared to traditional agency workflows.

The platform distinguishes itself through multi-model orchestration rather than reliance on a single AI engine. Synthesys routes each subtask to the best-performing frontier model among Sora 2, Google VEO 3.1, Wan 2.5, Kling 3, Seedream, and others, optimizing for photorealistic rendering, natural motion, and speech quality. It offers a library of over 1,000 AI avatars, 400+ studio-grade voices, and support for 140+ languages with frame-accurate lip-sync. The AI matches mouth movements to each language’s phonemes, enabling localized content that feels natively produced. Users can generate videos from a simple text prompt, a product URL, or a pre-written script, and can also auto-generate scripts or complete videos from a brief. The system is continuously updated with newly released models, ensuring the interface stays current with advances in generative video technology.

Use cases span the full marketing funnel. Marketing teams can produce UGC-style social ads with creator-energy delivery for TikTok, Instagram Reels, and Meta; e-commerce brands can turn product photos into listing videos and commercials; L&D departments can build multilingual training libraries; and agencies can deliver client videos without production overhead. Synthesys also supports dedicated formats such as AI animated commercials, hybrid video sales letters, product explainers, and long-form training content up to 30 minutes. The commercial advantage is substantial: compared to traditional production costs of $5,000–$20,000 per video, Synthesys states per-video generation costs starting at roughly $0.50, delivering a 90–95% cost reduction and up to 10x faster turnaround. Full commercial rights are included in every plan, permitting use in paid ads, broadcast, client deliverables, and monetized YouTube content without royalties or additional licensing fees.

The workflow is intentionally lean: choose a format and visual style, provide a script or product link (or let the AI generate everything), then generate and publish within minutes. The agent manages all technical stages—voice synthesis, lip-sync alignment, facial expressions, transitions, and export formatting—so teams can iterate rapidly by changing scripts, swapping avatars, or experimenting with different video styles. Synthesys positions itself as an end-to-end AI video infrastructure for organizations that need scalable, cost-efficient, and multilingual production capabilities.

Core capabilities

Generate realistic AI voiceovers in multiple languages and accents

Create AI avatars for video presentations from text scripts

Synthesize studio-quality audio with human-like intonation and emotion

Produce professional videos without cameras, microphones, or actors

Offer a library of diverse AI voice models and human avatars

Use cases

Generate AI voiceover narration for use in video production

Create multilingual AI voices for virtual customer service

Produce clear standard-pronunciation explanations for educational online courses

Convert text news into spoken audio broadcasts for easy listening

Generate customized AI voiceovers for video brand advertisements