tau-Multilingual: Benchmarking Voice Agents Across Languages

arXiv:2609.35820 · cs.CL, cs.AI, cs.SD, eess.AS · Submitted 2026-09-21 · Read on arXiv

cs.CL, cs.AI, cs.SD, eess.AS

Submitted: 2026-09-21

Updated: 2026-09-21

Code: https://github.com/sierra-research/tau2-b

Terminology

• Benchmark — 14× in this paper · explained in 2 episodes
• Fidelity — 9× in this paper · explained in 2 episodes
• Ablation — 5× in this paper · explained in 1 episode
• Benchmarking — 4× in this paper · explained in 4 episodes
• Grounding — 2× in this paper · explained in 3 episodes
• Agentic Task — 1× in this paper · explained in 1 episode
• Agentic Tasks — 1× in this paper · explained in 1 episode
• Failure Modes — 1× in this paper · explained in 3 episodes
• Full-duplex interaction — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes

Sources

• $\tau$-Voice: Benchmarking Full-Duplex Voice Agents on Real-World Domains
• EVA-Bench: A New End-to-end Framework for Evaluating Voice Agents
• Full-Duplex-Bench-v3: Benchmarking Tool Use for Full-Duplex Voice Agents Under Real-World Disfluency
• M3-DuplexBench: A Multi-Turn, Multilingual, Multidomain Benchmark for Full-Duplex Spoken Dialogue Models
• VoiceAgentBench: Are Voice Assistants ready for agentic tasks?
• $\tau^2$-Bench: Evaluating Conversational Agents in a Dual-Control Environment

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