Best for explainers, thought leadership, and done-for-me videos with real-world assets, AI motion graphics, and strong hooks.
You want end-to-end automation, stronger publishable output quality, real-world assets, integrated research and scripting, and longer multi-scene explainers - all from a single prompt.
You need enterprise-grade AI avatar presenters for L&D training, multilingual dubbing at scale, SCORM-compatible exports for your LMS, or interactive video with quizzes and branching.
Biggest difference: Agent Opus is a video agent: give it a topic and it delivers a finished, visually rich video. Synthesia is an avatar studio: give it a script and it delivers a digital presenter reading it. One automates production; the other automates the on-camera talent.
A feature-by-feature look at where each tool wins.
| Feature | Agent Opus | Synthesia |
|---|---|---|
| Best forAgent Opus | 🏆 Explainers, news recaps, thought leadership, commentary | L&D training, onboarding, corporate comms, sales enablement |
| WorkflowAgent Opus | 🏆 One prompt → finished video (research, script, VO, edit, export) | Provide script/doc/URL → select avatar & template → generate scenes |
| Inputs supportedAgent Opus | 🏆 URLs, text, scripts, audio, LinkedIn posts, PDFs | Scripts, docs (.ppt, .pdf, .docx), URLs, screen recordings |
| Research & sourcingAgent Opus | 🏆 Built-in live web research, auto-curated real-world assets | No independent research — repurposes content you provide |
| Script + hooksAgent Opus | 🏆 AI-generated with research, optimized hooks | Basic AI script generator — functional, corporate-tone output |
| VoiceoverCompetitor | Premium AI voices, tone control, voice cloning | 🏆 Hundreds of voices, 160+ languages, enterprise voice cloning, AI dubbing |
| Video lengthAgent Opus | 🏆 30s to 15+ min, multi-scene narratives | Up to 4 hrs total — but AI assistant caps at 5 min per generation |
| AI AvatarsCompetitor | Available, but not the focus | 🏆 230+ avatars, Express-2 full-body gestures, personal clones, multi-presenter |
| Motion graphicsAgent Opus | 🏆 AI-generated motion graphics, kinetic text, data viz | Slide-style layouts — no kinetic text, data viz, or animated overlays |
| Brand controlsAgent Opus | 🏆 Logo, colors, fonts, intro/outro, lower thirds, tone presets | Brand kit with colors, fonts, logos — 55+ templates |
| Export formatsAgent Opus | 🏆 16:9, 9:16, 1:1 — presets for all platforms | 16:9, 9:16 — MP4, SCORM for LMS integration |
Five capabilities that separate Agent Opus from avatar-first tools.
Agent Opus produces broadcast-grade explainers with real b-roll, data overlays, and motion graphics. Synthesia generates polished avatar presenters in front of backgrounds or slides. For content that needs dynamic visuals beyond a talking head, Agent Opus leads.
Agent Opus runs an AI agent pipeline: research, script, voice, visuals, edit, export. Synthesia requires you to write or provide a script, choose an avatar and template, then generate. If your bottleneck is ideation-to-publish speed, Agent Opus removes more steps.
Agent Opus reads URLs, PDFs, and data to generate accurate scripts with citations. Synthesia can ingest URLs and documents but only to structure provided content - it does not research independently. For teams that need AI to do the research, Agent Opus is the answer.
Agent Opus supports multi-scene narratives (3 to 15+ minutes) with pacing controls. Synthesia's AI Video Assistant caps at 5-minute outputs, pushing users to manual editing for longer content. If you publish in-depth explainers, Agent Opus handles the structure natively.
Agent Opus layers kinetic text, icon animations, chart builds, and transition effects throughout every video. Synthesia centers on an avatar presenter with slide-style backgrounds. For channels that rely on visual storytelling over talking heads, Agent Opus fits better.
Where Synthesia has the edge
Synthesia is the stronger pick when you need photorealistic AI avatars with full-body gestures for corporate training, multilingual dubbing that preserves speaker voice, SCORM exports for LMS integration, or enterprise security compliance (SOC 2, ISO 42001).
Same prompt, two tools. See which output wins for explainer content.
For research-driven explainers, Agent Opus delivers a finished video from a single prompt while Synthesia requires you to write a script, select an avatar and template, and build each scene manually in their editor.
Agent Opus delivers the most value for these content categories.
Paste a data URL, get a scripted, visualized recap with charts and motion graphics in minutes instead of a full editing session.
Turn a blog post or white paper into a polished multi-scene video with b-roll, citations, and branded transitions.
Generate feature walk-throughs for every product update without booking a studio or an avatar session.
Summarize policy changes or onboarding docs into watchable 5-minute videos with key-point overlays.
If you’re using Synthesia today, here’s how to get started with Agent Opus.
Choose from explainer, news update, thought leadership, or promo video templates.
Drop in an article link, a LinkedIn post, a rough script, or just describe your topic in a sentence.
Agent Opus researches, writes, voices, assembles, and edits your video automatically. Review the output.
Download in your preferred format or publish directly to TikTok, Reels, Shorts, YouTube, or LinkedIn.
No filming. No editing. No avatar setup. Just results.
Try Agent Opus Free →From prompt to published in minutes, not hours
Real-world assets and motion graphics that feel credible
Research, script, visuals, voice, edit — all automated