Cartesia Managed Agents hits Elo 1115, task success up to 91.7%
HazyResearch · x · 2026-10-29
Cartesia launched Managed Agents, a fully managed platform for building and deploying voice agents. It scored an Elo of 1115 on the Artificial Analysis Speech Agent Arena — 98 points above its predecessor Cartesia Line — with task success rate rising from 77.5% to 91.7%.
It's a cascaded system: Cartesia's own Ink speech-to-text and Sonic text-to-speech models wrap an LLM of the developer's choice (evaluated with GPT-5.5, Skylar/Daniel voices). The team says co-designing the harness tightly with their models is pushing voice-agent SOTA.
Related event: Cartesia Managed Agents tops Speech Agent Arena with Elo 1115(7 posts)→
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