# Synthesia

Synthesia (synthesia.io): subprocessors, data processing agreement, security documents and changes, as monitored by Third Party Index.

- Page: https://thirdpartyindex.com/vendors/synthesia-io
- Documents last verified: 2026-10-04
- Transparency rating: 73/100 (how much it publishes, not how secure it is): Subprocessor list 30/30; Processing locations 0/8 (partial); Purposes 7/7; Data processing addendum 12/12; Trust center 0/8 (not found); Privacy policy 6/6; security.txt 0/6 (not found); Security page 5/5; Status page 5/5; Vulnerability disclosure 0/5 (not found); Pages still reachable 8/8
- Supply chain: relies on 18 tracked vendors directly, 122 within two hops, 361 within three; 1 tracked vendors rely on it directly, 1 within two hops, 1 within three
- Cite as: Synthesia, Third Party Index, https://thirdpartyindex.com/vendors/synthesia-io (data CC BY 4.0)

## Documents

| Document | URL | Last verified | Last changed |
|---|---|---|---|
| Subprocessor list | https://www.synthesia.io/legal/subprocessors | 2026-10-04 | 2026-10-04 |
| Data processing addendum | https://www.synthesia.io/legal/data-processing-agreement | 2026-10-04 | 2026-10-04 |
| Privacy policy | https://www.synthesia.io/legal/privacy-policy | 2026-10-04 | 2026-10-04 |
| Terms | https://www.synthesia.io/legal/customer-terms-of-service | 2026-10-04 | 2026-10-04 |
| Security page | https://security.synthesia.io/ | 2026-10-04 | 2026-10-04 |
| Status page | https://status.synthesia.io/ | 2026-10-04 | 2026-10-04 |

## Subprocessors (26)

As its own list states them.

| Subprocessor | Purpose | Location | Listed since |
|---|---|---|---|
| [ai-coustics GmbH](https://thirdpartyindex.com/vendors/ai-coustics.md) | Pre-processing of the audio submissions for the quality improvement. | — | 2026-10-04 |
| [Amazon Web Services EMEA SARL](https://thirdpartyindex.com/vendors/amazon-web-services.md) | Web hosting, data storage and compute for video processing services. Scripts, audio, and video data is stored and transmitted for the purpose of video creation. | — | 2026-10-04 |
| [Anthropic PBC](https://thirdpartyindex.com/vendors/anthropic.md) (AI model provider: Anthropic) | Generating outputs, including visuals, from the inputs provided within the product or within the video. | — | 2026-10-04 |
| [AssemblyAI, Inc.](https://thirdpartyindex.com/vendors/assemblyai.md) (AI model provider: AssemblyAI) | speech-to-text conversion | — | 2026-10-04 |
| BFL GmbH | Processes text, audio, and video inputs via hosted generative AI models. | — | 2026-10-04 |
| Canva Austria GmbH (formerly named Kaleido AI GmbH) | Video processing to prepare a custom avatar. Video data of a person is transmitted and stored for a time-limited period for the purpose of pre-processing video to create a custom avatar for the service. | — | 2026-10-04 |
| [Cartesia AI, inc.](https://thirdpartyindex.com/vendors/cartesia.md) | Text to speech generation and voice synthesis, processing customer script and voice data for creating voice clones and dubbing content. | — | 2026-10-04 |
| Cinder Technologies, Inc. | content moderation. | — | 2026-10-04 |
| CoeFont Co.,Ltd. | Text-to-speech conversion | — | 2026-10-04 |
| [Datadog, Inc.](https://thirdpartyindex.com/vendors/datadog.md) | Observability and error monitoring for the Services. | — | 2026-10-04 |
| [DeepL SE](https://thirdpartyindex.com/vendors/deepl.md) | Machine translation of scripts to different languages | — | 2026-10-04 |
| [Eleven Labs Inc.](https://thirdpartyindex.com/vendors/elevenlabs.md) (AI model provider: ElevenLabs) | Text-to-speech conversion, voice cloning | — | 2026-10-04 |
| [Features & Labels, Inc.](https://thirdpartyindex.com/vendors/fal.md) | Processes text, audio, and video inputs via hosted generative AI models. | — | 2026-10-04 |
| [Google Cloud EMEA Limited](https://thirdpartyindex.com/vendors/google-cloud.md) | text-to-speech conversion, speech-to-text conversion, machine translation of scripts to different languages, other content processing | — | 2026-10-04 |
| IBM United Kingdom Limited | Text-to-speech conversion | — | 2026-10-04 |
| [Intercom R&D Unlimited Company](https://thirdpartyindex.com/vendors/intercom.md) | Support ticketing system and widget | — | 2026-10-04 |
| [LiveKit Incorporated.](https://thirdpartyindex.com/vendors/livekit.md) | Processing for voice-based, text-based, and other interactions for interactive videos. | — | 2026-10-04 |
| [Microsoft Ireland Operations Limited](https://thirdpartyindex.com/vendors/microsoft.md) | Content moderation, text-to-speech, speech-to-text conversion, and voice cloning. | — | 2026-10-04 |
| [Modal Labs, Inc.](https://thirdpartyindex.com/vendors/modal.md) | Compute for video processing services, including the processing of audio and video data for the purpose of video creation. | — | 2026-10-04 |
| [MongoDB Limited](https://thirdpartyindex.com/vendors/mongodb.md) | Structuring and storing production data | — | 2026-10-04 |
| [Mux Inc.](https://thirdpartyindex.com/vendors/mux.md) | Video content delivery network | — | 2026-10-04 |
| [OpenAI OpCo, LLC](https://thirdpartyindex.com/vendors/openai.md) (AI model provider: OpenAI) | generating outputs from the inputs provided within the product or within the video, content moderation, text-to-speech conversion. Sub-processor will not use the data for any internal purpose including training of the LLM models (https://openai.com/policies/api-data-usage-policies) | — | 2026-10-04 |
| [Runway AI, Inc.](https://thirdpartyindex.com/vendors/runway.md) (AI model provider: Runway) | Video generation based on an image prompt | — | 2026-10-04 |
| StackOne Technologies Ltd | Processing of data from customer-enabled third party integrations. | — | 2026-10-04 |
| UAB ConvertAPI | Conversion of PowerPoint presentations uploaded by the customers into slides in STUDIO. No persistent storage is utilised. | — | 2026-10-04 |
| WellSaid Labs Inc. | Text-to-speech conversion | — | 2026-10-04 |

Read from ([evidence](https://thirdpartyindex.com/evidence/43635)). CSV: https://thirdpartyindex.com/vendors/synthesia-io/subprocessors.csv

AI model providers (or a cloud provider's AI model service) among these entries: 5. All vendors that list one: https://thirdpartyindex.com/ai

### Its own affiliates (2)

- Synthesia Inc.
- Synthesia ApS

## Subprocessor of (1)

Tracked vendors whose own subprocessor lists name it, and what they say they use it for.

- [Hoxhunt](https://thirdpartyindex.com/vendors/hoxhunt.md): Where applicable, provider of optional Services content, such as deepfake simulation content

## Service status

Incidents it reported on its own status page.

- Last 90 days: 9 reported incidents (4 major or critical, 4 minor, 1 with no impact stated)
- Typical time to resolve: 2 h 43 min
- Status page last read: 2026-10-05
- 2026-09-02: Synthesia Loading Issues (minor)
- 2026-08-11: Dubbing Issues (minor)
- 2026-08-06: Performance Issues (minor)
- 2026-07-28: Login Issues (major)
- 2026-07-27: Login Issues (major)
- 2026-07-21: Video Generation Delays (no impact stated)
- 2026-07-16: Login Issues (major)
- 2026-07-14: Slow loading times for shared Synthesia videos (minor)

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Third Party Index (https://thirdpartyindex.com) monitors vendors' public security and privacy documents and keeps each version as evidence. Data CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/); vendors' own documents are theirs. API: https://thirdpartyindex.com/api