September 29, 2026

A public benchmark for voice AI models

No single model is best at everything. Retell is model-agnostic, so we now publish how each model performs in live calls, for customers and non-customers alike.

  • Side-by-side results across the newest models
  • Metrics chosen for voice: instruction following, grounding, colloquialism, latency and more
  • Updated as new models are released

→ See the benchmark

Revolutionize your call operation with Retell