Telnyx

Telnyx operates a global IP voice network and offers a no-code AI voice agent builder directly in its dashboard. You can set up inbound and outbound calling, transfer logic, and custom prompts without writing code, all backed by Telnyx's carrier infrastructure. Voice quality is handled through their direct network investment, giving you reliability comparable to enterprise carriers.

Best for businesses that need production voice infrastructure without managing multiple vendors. Telnyx works well if you're building customer service automation, appointment handling, or outbound survey systems and want everything in one platform with SLA backing.