Cartesia Managed Agents tops Speech Agent Arena with Elo 1115, task success up from 77.5% to 91.7%
ArtificialAnlys · x · 2026-10-28
Artificial Analysis evaluated Cartesia Managed Agents on its Speech Agent Arena:
- Elo 1115 (95% CI 1086–1144, 685 samples), 98 points above Cartesia's earlier Cartesia Line (1017), with non-overlapping confidence intervals
- Task Success Rate: 91.7% of tool-calling conversations end with the correct final tool call, up from 77.5%
- Architecture: a cascaded system using Cartesia's own Ink STT and Sonic TTS around a developer-chosen LLM; evaluated with GPT-5.5 and Skylar/Daniel voices
- Pricing: $0.06/minute ($3.60/hour), LLM usage billed separately
Related event: Cartesia Managed Agents Tops Speech Agent Arena(6 posts)→
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