How Regal Reduced AI Agent Latency by 26%
By Alice Heyeh
On a phone call, a caller notices even a half-second pause before a Voice AI agent responds and that pause is one of the clearest signals they're not talking to a human. This blog breaks down how Regal reduced end-to-end AI agent response latency by 26% by fixing how prompt caching works across calls. The piece walks through the mechanics of time to first token, how prefix-based caching works and what's next: faster voice models, smarter handling of tool calls and architectural changes to shave latency from both sides of a conversation.