HeyGen Voice tops the controlled-voice TTS arena

For voice agent builders, it gives comparable numbers: HeyGen Voice leads at Elo 1,201 for $30 per 1M characters, versus Qwen at $19.3 and ElevenLabs v4 Turbo at $40, but generates slower at 40 characters per second.

• The Controlled Voice arena scores every model on the same 8 cloned voices across US and UK English; HeyGen Voice's Elo of 1,201 comes from 1,468 arena appearances, ahead of Eleven v4 Turbo (1,166) and Eleven v4 (1,162).
• By use case, Artificial Analysis ranks HeyGen Voice #1 in Assistants and Customer Service, #2 in Knowledge Sharing, and #1 for UK English.
• Pronunciation robustness is mid-pack: 83.1%, #10 of 29 models, behind Qwen-Audio-3.1-TTS-Plus at 84.6%, though it ranks #2 at preserving exact sequences (83.3%), behind only SpaceXAI TTS.
• Its 40 characters per second of generation trails Eleven v4 at 76 and Gemini 3.8 Flash TTS at 46, so the arena lead comes with slower output.

• AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.

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