Region-specific English
Choose accents and locales so pronunciation and delivery match the audience, from US to UK to Australian English.
Fish Audio voices for HeyGen avatars
HeyGen's AI Studio includes a Fish voice engine powered by Fish Audio, giving creators expressive English delivery with selectable accents and locales for every avatar video.
CategoryVideo & avatars
IntegrationNative voice engine inside HeyGen AI Studio
Where to find itVoice picker → Fish
Default modelAccent and locale for English
In productionFish Audio S2 Pro powers HeyGen deployments
Using voices in AI Studio ↗Why HeyGen and Fish Audio
HeyGen turns a script into a finished avatar video. The voice is what makes that video feel human, and Fish Audio was built for exactly that kind of expressive, region-specific delivery.
Closest clones for English
HeyGen's own guidance notes that the Fish engine often clones closest for English voices, so a founder or presenter sounds like themselves.
Proven at production scale
Fish Audio S2 Pro powers production deployments at HeyGen, handling real traffic, edge-case pronunciation and multi-region load.
How it works
3 steps from a Fish Audio voice to a shipping product on HeyGen.
STEP 01
Open AI Studio
Start a new video or open an existing scene in HeyGen's AI Studio and select the avatar you want to voice.
STEP 02
Choose the Fish engine
In the voice picker, switch the engine to Fish. Your cloned voices and Fish Audio library voices appear here.
STEP 03
Pick accent and locale
Set the English accent and locale for the audience, generate, and iterate on delivery inside HeyGen.
What teams build with Fish Audio and HeyGen
Marketing and product videos
Launch videos, explainers and ads with a presenter voice that matches the market it ships to.
English
German
Korean
SpanishLocalized training content
One script, many regions. Swap accents and locales without re-recording a single line.
Personalized outreach at scale
Sales and success teams generate one-to-one avatar videos in the customer's own English.
More partners
Open-source WebRTC stack and Agents framework. Fish Audio TTS ships as a first-party plugin and through LiveKit Inference.
Real-time infrastructure
Voice agent platform for phone and call centers. Import any Fish Audio voice to power your Retell agent.
Voice agent platforms
Global execution layer for real-time voice AI. Runs Fish Audio S2.1 Pro on in-region GPUs in Europe and Australia.
Regional inference
Start building with Fish Audio and HeyGen
See how the Fish engine works inside HeyGen, or talk to our partnerships team about creator programs and co-marketing.