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Model Release

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OpenAI Anthropic Google Alibaba GPT-5.6 Sol Claude Opus 5

Tuesday, 18 August 2026

Cartesia Ships Sonic-3.6: A Streaming TTS Model That Now Leads Both Artificial Analysis Speech Arenas

MarkTechPost 1 week ago 51 ● 2 sources

Cartesia released Sonic-3.6, a real-time text-to-speech model built on state space models rather than transformers. The model ranks first on both Artificial Analysis speech leaderboards with 1,283 Elo on Provider Voice and 1,123 on Controlled Voice, and claims sub-90ms latency to first audio. It is available as a hosted API starting at $5 per month, positioning it at $49 per million characters, half the price of ElevenLabs Eleven v3.

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AI Benchmarking Model Release Text-to-Speech

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