Twilio vs Vobiz - full comparison

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At-a-glance matrix

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Twilio → Vobiz mapping

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Two changes that unlock everything

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1. Credentials and client

from twilio.rest import Client

client = Client(ACCOUNT_SID, AUTH_TOKEN)

from vobiz import Vobiz

# api_key IS your Auth ID → X-Auth-ID; auth_token → X-Auth-Token
client = Vobiz(api_key=AUTH_ID, auth_token=AUTH_TOKEN)

const twilio = require('twilio');

const client = twilio(ACCOUNT_SID, AUTH_TOKEN);

import { VobizClient } from '@vobiz/sdk';

const client = new VobizClient({ apiKey: AUTH_ID, authToken: AUTH_TOKEN });

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2. Outbound call + call instructions

call = client.calls.create(
    to='+14165553434',
    from_='+14155551234',
    url='https://example.com/answer.xml',
    method='POST',
)

call = client.calls.make_call(
    auth_id=AUTH_ID,
    from_='+14155551234',
    to='+14165553434',
    answer_url='https://example.com/answer.xml',
    answer_method='POST',
)

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Gather action="/menu" method="POST" input="dtmf" numDigits="1">
    <Say>Press 1 for sales, 2 for support.</Say>
  </Gather>
</Response>

from vobiz import vobizxml

resp = vobizxml.ResponseElement()
menu = resp.add_gather(action='/menu', method='POST',
                       input_type='dtmf', num_digits=1)
menu.add_speak('Press 1 for sales, 2 for support.')
print(resp.to_string())

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Recommended migration order

1. Credentials and client - map Account SID/Auth Token → api_key/auth_token, swap the base URL to https://api.vobiz.ai/api/v1, and add the explicit auth_id. See Voice Call API.
2. TwiML → VobizXML - port your answer documents: <Say> → <Speak>, keep <Gather> (add inputType/executionTimeout), <Dial><Client> → <Dial><User>. See TwiML → VobizXML and /xml/gather.
3. Outbound calls and live control - calls.create → calls.make_call, and move in-call actions to play_audio/speak_text/dtmf/record_calls + live_calls. See Voice Call API.
4. Numbers and SIP trunking - search the inventory, purchase_from_inventory, then wire trunks/credentials/ip_access_control_list/origination_uri. See Phone numbers and SIP trunking.
5. Conferences and recordings - same <Conference>/<Record> verbs; adopt the conference* and record_calls/recordings namespaces. See Conferences and Recordings.
6. Sub-accounts and KYC - recreate subaccounts with sub_accounts, then layer on sub_account_kyc for India onboarding. See Sub-accounts.
7. Webhook validation - swap X-Twilio-Signature/RequestValidator for X-Vobiz-Signature + the SDK validator, and read Gather input from the action URL. See Webhooks.
8. Reporting and SDK cleanup - repoint call-log queries to cdr.list_cdrs/get_cdr and finish adopting the git-cloned SDKs. See SDKs.

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Key differences

• Same two secrets, header auth. Vobiz sends your Auth ID and Auth Token as X-Auth-ID and X-Auth-Token headers (the SDK does this for you), instead of Twilio’s HTTP Basic Account SID:Auth Token.
• Explicit auth_id everywhere. Every account-scoped Vobiz method names the account it acts on, so multi-tenant and sub-account code reads unambiguously and is easy to audit.
• answer_url + answer_method. A Vobiz call fetches VobizXML from your answer_url, with the HTTP method stated explicitly - the same webhook-driven model as TwiML url, made explicit.
• Familiar XML, one rename. VobizXML keeps the <Response> container and most verbs; the main change is <Say> → <Speak>. <Gather> keeps numDigits/finishOnKey and adds inputType, executionTimeout, and digitEndTimeout (per-leg answer timeouts live on <Dial>/<Number>).
• Dedicated in-call resources. Where Twilio updates a call to redirect or act on it, Vobiz exposes live_calls, play_audio, speak_text, dtmf, and record_calls as first-class, strongly-typed resources keyed by (auth_id, call_uuid).
• Imperative transfers via <Redirect>. To move a call to a new flow, return <Redirect> from the answer URL - a clean, stateless hand-off that keeps your call logic in one place.
• SIP trunking and India KYC are first-class in the SDK. trunks/credentials/ip_access_control_list/origination_uri and sub_account_kyc (PAN/GST/CIN/DigiLocker/hosted sessions) are typed resources in all seven SDKs.
• SDKs you git-clone. The seven Vobiz SDKs are cloned from vobiz-ai/* and ship the vobizxml builder in the box, so your REST calls and your answer-document generation come from one package.