Telnyx API
telnyx.com
Provides programmatic access to voice (SIP trunking, Call Control, WebRTC), SMS/MMS/RCS messaging, phone numbers, and AI inference services over a REST API.
The Telnyx API API uses bearer token authentication; has usage based pricing; offers a free tier (Pay-as-you-go with $0/mo minimum commitment; no free usage allowance documented (x402 inference callable with no signup)); rate limits: Plan-dependent. Free: 10 req/sec API, 1 SMS/sec, 1 call/sec, 60 inference req/min. Pro: 50 req/sec, 10 SMS/sec, 10 calls/sec, 300 inference req/min. Enterprise: custom. Retry on HTTP 429 respecting Retry-After.. Verified 2026-07-12 with per-field source links.
Free tier
Pay-as-you-go with $0/mo minimum commitment; no free usage allowance documented (x402 inference callable with no signup)
telnyx.com ↗Pricing
Usage-based, no commitments: SMS from $0.004/msg, SIP outbound from $0.005/min, Voice API $0.002/min platform fee, Voice AI Agent $0.05/min, US local numbers from $1.00/mo. Plans: Pay-as-you-go ($0/mo), Committed ($500/mo), Enterprise ($5000/mo).
telnyx.com ↗Rate limits
Plan-dependent. Free: 10 req/sec API, 1 SMS/sec, 1 call/sec, 60 inference req/min. Pro: 50 req/sec, 10 SMS/sec, 10 calls/sec, 300 inference req/min. Enterprise: custom. Retry on HTTP 429 respecting Retry-After.
telnyx.com ↗