Twilio is the most well-known voice API platform, but many developers are looking for alternatives — whether for cost reasons, flexibility, or avoiding vendor lock-in.
Why look for a Twilio alternative?
- Cost — Twilio's per-minute pricing adds up quickly at scale
- Control — Twilio is a black box; you cannot inspect or modify the infrastructure
- Flexibility — custom TTS providers, custom SIP trunks, custom recording pipelines
- Lock-in — migrating away from Twilio usually means rewriting your integration
Wirexa API vs Twilio — Feature comparison
| Feature | Twilio | Wirexa API |
|---|---|---|
| REST API | ✓ | ✓ (compatible) |
| TwiML / LAML | ✓ | ✓ (same syntax) |
| Python SDK | ✓ | ✓ (drop-in replacement) |
| Call recording | ✓ | ✓ WAV + MP3 |
| AMD detection | ✓ | ✓ async + sync |
| Multi-provider TTS | Twilio voices only | Polly, Google, ElevenLabs, Azure |
| Custom SIP trunks | Limited | ✓ any SIP provider |
| SignalWire SDK compatible | — | ✓ |
How to migrate from Twilio to Wirexa API
If you already use the Twilio Python SDK, the migration takes literally two lines of code.
Before (Twilio)
from twilio.rest import Client
client = Client("ACxxxxxxxx", "your_auth_token")
call = client.calls.create(
to="+15551234567",
from_="+15559876543",
url="https://your-backend.com/voice",
)After (Wirexa API — only 2 changes)
from wirexaapi import Client # <-- change 1
client = Client(
"your_project_id",
"your_api_token",
signalwire_space_url="wirexaapi.com" # <-- change 2
)
call = client.calls.create( # rest is identical
to="+15551234567",
from_="+15559876543",
url="https://your-backend.com/voice",
)If you use the SignalWire SDK
# Before from signalwire.rest import Client # After from wirexaapi import Client
Conclusion
Wirexa API gives you full Twilio/SignalWire API compatibility with more TTS options, custom SIP trunk support, and no vendor lock-in. Migration is risk-free — you can test in parallel and switch instantly.
Request access or read the API documentation.