Synthesia has become the enterprise standard for AI video generation, with L&D teams, HR departments, and marketing orgs relying on it daily to create training videos, product demos, and internal communications using AI avatars. When Synthesia stops working — videos stuck rendering, the dashboard won't load, or the API returns errors — the pressure is immediate. The question is always: is Synthesia down for everyone, or is it just me?
How to Check if Synthesia is Down (5 Methods)
Before escalating internally or contacting your Synthesia account manager, confirm whether the issue is platform-wide:
1. Synthesia Official Status Page
Visit status.synthesia.io for real-time component status covering Synthesia's video creation platform, rendering pipeline, API, and enterprise features. Synthesia maintains separate status indicators for the web app and API — both are tracked independently.
2. DownDetector for Crowdsourced Reports
DownDetector surfaces user-submitted outage reports in real-time. A cluster of reports from multiple companies or regions is a strong signal of a genuine platform incident rather than a localized issue.
3. Search X/Twitter for Reports
Search "Synthesia down" or "Synthesia not working" on X. Corporate users and L&D professionals often post immediately when critical video projects are blocked by outages.
4. Test the Synthesia API Directly
For enterprise and Business plan users with API access, test the https://api.synthesia.io/v2/videos endpoint. A 503 response confirms infrastructure issues. A 401 confirms an authentication problem — not an outage.
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Try Better Stack Free →5. Contact Your Synthesia Account Manager
Enterprise and Business plan subscribers have dedicated account managers and priority support channels. If you have an active SLA, escalating via your account manager gets faster confirmation and resolution timelines than waiting for public status page updates.
Why Does Synthesia Go Down? Common Causes
- Rendering Queue Backlogs: Synthesia's render farm processes thousands of concurrent video jobs. During enterprise rush periods (end-of-quarter training pushes, product launch weeks), queues can saturate and cause hours-long rendering delays.
- AI Avatar Model Updates: Synthesia regularly updates its avatar models for realism and performance. Migration periods can cause temporary errors for specific avatars or languages.
- Text-to-Speech Dependency: Synthesia uses cloud TTS providers for voice generation. Upstream outages from providers like Microsoft Azure TTS or Google Cloud TTS can cascade into Synthesia video generation failures.
- Cloud Region Events: Synthesia's infrastructure runs on major cloud providers. Regional availability zone issues can temporarily degrade rendering capacity in specific geographic regions.
- Enterprise Integration Updates: Changes to LMS integrations (Workday Learning, SAP SuccessFactors, Cornerstone) or SSO configurations during updates can cause temporary authentication failures for enterprise users.
Action Plan: What to Do When Synthesia is Down
For L&D Teams and Corporate Users:
- Check status.synthesia.io and escalate to your Synthesia account manager immediately if you have an SLA.
- For completed but not-yet-downloaded videos: check if they're available for download in your Synthesia library (already rendered videos survive most outages).
- Switch to HeyGen for urgent avatar video needs — similar AI presenter format, different infrastructure.
- Use downtime to script and storyboard upcoming videos for faster production when Synthesia recovers.
For Developers Using the Synthesia API:
- Implement exponential backoff on video creation requests: start at 5s, double each retry, cap at 5 minutes.
- Use the
GET /v2/videos/{videoId}status poll loop to track rendering — don't assume synchronous completion. - Store video request IDs so you can poll for completion after an outage without resubmitting.
- Set up Better Stack monitoring on your Synthesia API integration to detect failures automatically.
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Try Better Stack Free →Synthesia API Error Codes Explained
401 UnauthorizedInvalid or missing API key
Fix: Check your Authorization header: Bearer YOUR_API_KEY. Verify key is active at app.synthesia.io/settings/api-keys.
400 Bad RequestInvalid request body — missing required fields
Fix: Verify your request includes all required fields: scriptText or scriptUrl, avatar, background. Check the Synthesia API docs for your endpoint version.
429 Rate LimitedAPI request rate limit exceeded
Fix: Synthesia API rate limits depend on your plan. Implement request queuing with exponential backoff. Contact support to increase limits if needed.
500 Internal Server ErrorSynthesia server-side failure during video creation
Fix: Retry after 30-60 seconds. If persistent, check status.synthesia.io — this typically signals a rendering infrastructure issue.
Video status: failedVideo was accepted but rendering failed
Fix: Retry the video creation request. Common causes: unsupported character set in script, invalid avatar ID, or rendering farm overload. Your API credit is typically not consumed for failed renders.
Synthesia Alternatives When AI Video is Down
HeyGen
Best fallbackClosest Synthesia competitor. AI avatars, voice cloning, real-time translation. Separate infra.
D-ID
API usersAI talking avatar video. Strong API for developers. Used for customer-facing video at scale.
Runway ML
Creative workMore creative/generative video, less avatar-focused. Gen-3 Alpha for cinematic AI video.
Luma AI
Visual contentAI video generation from text + image. Dream Machine for visual storytelling.
Frequently Asked Questions
Is Synthesia down for everyone or just me?
Check status.synthesia.io. If there's an active incident, it's platform-wide. If status shows operational but videos aren't rendering, check your internet connection speed (slow uploads can prevent script processing) and try in an incognito browser window to rule out extension interference.
How long do Synthesia outages typically last?
Minor rendering delays (slow but processing) typically clear in 30-60 minutes. Full platform incidents usually resolve in 1-3 hours. Enterprise customers with active SLAs should escalate directly to their account manager for faster resolution paths.
Will my in-progress videos be lost during an outage?
Videos that were already submitted for rendering before the outage are typically queued and will complete when the rendering infrastructure recovers. Synthesia saves your project drafts automatically — you won't lose script or slide work. Check your video library when service recovers.
Does Synthesia have an enterprise uptime SLA?
Synthesia Enterprise plans include uptime SLAs. The specific percentage and credit policies are in your enterprise contract. Contact your account manager for details. Business plan users have separate support SLA terms covering response time but may not include uptime credits.
How do I monitor Synthesia API status for my production app?
Set up a Better Stack monitor hitting the Synthesia API health endpoint with your API key. Configure alerts for response time thresholds and 5xx error rates. Alert Pro from APIStatusCheck also provides Synthesia monitoring with instant email and webhook notifications.
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