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Vobiz vs Exotel

Half of India’s voice AI already streams on Exotel. Why build yours anywhere else?

India’s AI builders and largest enterprises run their Voice AI on Exotel. Industry-leading streaming latency of under 20ms keeps conversations smooth, and 24kHz audio keeps every word clear.

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700M+AgentStream calls attempted monthly.
<20 msUltra-low latency
Up to 24 kHzHD audio streaming, 16 kHz by default
0 → MillionsElastic scaling, built in.

Leading AI platforms like Sarvam choose Exotel for their Voice AI.

Exotel powers the voice agents of AI platforms like Sarvam, Convin, and Ringg AI, and the customer calls of enterprises like Zerodha, Zomato, and Tata Digital.

Monthly talk time
minutes talk time on
AgentStream every month
Built on Exotel
Deployed at scale
A QUICK SNAPSHOT

Exotel vs Vobiz, feature by feature

Exotel gives you a complete voice platform on its own licensed network, with the reliability and scale to run Voice AI in production.

Capability
Vobiz
Where they differ
Streaming latencyLower latency, more natural conversations
Under 20ms
Quoted 80ms, without a per-leg breakdownSource
Indian telecom licence (UL-VNO)Makes compliance and procurement reviews easy
Yes, across 11 telecom circles
No
Native voice agent builderBuild and deploy voice bots on one platform
Yes, build and launch voice bots in-house
No
Native contact center platformHand off to humans seamlessly
Yes, AI and humans together
No
Live per-leg call control mid-callRescue calls before customers drop
Yes, transfer or barge anytime
No
Quality scoring on 100% of callsAuto-score every call for compliance and CSAT
Yes, every call scored automatically
No
Both platforms do this
SIP trunking and programmable voiceConnect your existing phone setup
Yes, with enterprise-grade routing
Yes
Real-time audio streaming for AIClearer audio, better AI accuracy
Yes, at up to 24kHz
Yes
Integrations with major voice-AI platformsKeep the agent you built
Yes, plug in any agent
Yes

Based on publicly available product information as of October 2026. Features, integrations, deployment options and performance vary by product, configuration and commercial agreement.

Why AgentStream

Why Exotel AgentStream should be your choice.

With AgentStream, your AI agent replies without delay, can transfer or change a call while it is live, and keeps working the same way whether you run a hundred calls a day or a million.

01 · Fast

More of the latency budget goes to your AI.

A voice AI agent has roughly 600–800 ms to hear, think and respond before the caller notices a delay. AgentStream takes under 20 ms of it, so your models get the rest. Audio streams at 16 kHz by default, with 24 kHz when you need it.

<20 msExotel media path
02 · Controllable

Your agent steers the call while it’s live.

Callers don’t follow a script. AgentStream gives your AI control of the session, not just a stream of audio.

Converse naturally. Interrupt playback, respond mid-session and handle DTMF.
Change the call. Route dynamically, switch destinations or move to a human.
Add AI without taking over. Run transcription, QA, or coaching alongside a live human call.
03 · Scalable

Scale from one number to millions on the same network.

Start with one agent and one number. Grow into production on the licensed network that already carries India’s largest voice-AI volumes, without switching providers again.

Active-active architecture. Built for redundancy across data centres.
Multi-operator connectivity. Calls don’t depend on a single carrier path.
Live capacity visibility. Track concurrency before capacity becomes an incident.
Our customers are seeing up to 8x year-over-year revenue growth because Corefactors turns every call into actionable data. Exotel’s cloud telephony enabled us to solve one of the biggest RevOps gaps in the market disconnected conversations and insights at massive scale.
Vimal Murali
Vimal MuraliCo-founder and Head of Partnerships, Corefactors
Built for scale

Still weighing your options? Here's why it's Exotel, every time.

01  /  Network

A licensed Indian network

Exotel holds its own telecom licence and runs the network directly, with no reseller between you and the carrier.

Why it matters: Compliance and procurement teams check network ownership early in a review. A licensed operator answers that check with one document.

  • UL-VNO telecom licence
  • 11 telecom circles
  • NDNC and DLT handled on outbound

The Exotel advantage: You audit one licensed provider instead of a chain of resellers.

Telecom tower with UL VNO licence, 99.99% uptime and 11 telecom circles
02  /  Latency

Sub-20ms media latency

AgentStream streams call audio to your AI agent in under 20ms, so the agent can reply as soon as the caller finishes speaking.

Why it matters: Callers notice delays in a voice bot and hang up sooner. Lower latency keeps them on the call longer.

  • Natural back-and-forth conversation
  • No awkward pauses

The Exotel advantage: Conversations sound natural, and callers stay on the line.

Under 20ms ultra-low latency, shown as a voice waveform
03  /  Handoff

AI and humans, together

AI agents and human agents work on the same Exotel platform, with customer history shared between them.

Why it matters: Some calls need a person. When the handoff carries the full conversation, the customer does not have to start over.

  • AI resolves up to 75% of calls on its own
  • The rest reach a person with the full conversation attached
  • Customers don’t repeat themselves

The Exotel advantage: Your cost per resolved call goes down.

Man working on a laptop beside AI call summaries tagged with intent and sentiment
04  /  Open stack

Bring any AI stack

Exotel connects your calls to the voice AI tools you already use.

Why it matters: AI models change every few months. You can switch models without changing your phone setup.

  • Vapi, Pipecat, LiveKit, or your own
  • Switch AI partners without rebuilding your phone setup

The Exotel advantage: You manage one fewer vendor.

FrameworksLiveKit · PipecatVoiceElevenLabs · Cartesia · OpenAIReasoningOpenAI · Gemini · AnthropicSpeechDeepgram · Sarvam · AssemblyAI
AgentStreamStreaming layer
05  /  Reliability

Reliability

Per-minute pricing leaves out the cost of a dropped call.

Why it matters: A dropped call can mean a lost sale or a missed payment. Higher uptime protects that revenue.

  • Multi-operator failover
  • Active-Active and DR
  • More calls run to the end

The Exotel advantage: You pay for calls that complete.

Woman with a headset smiling as she works on her laptop
Migrating from Vobiz

Moving from Vobiz to Exotel is easier than you think

You don’t rebuild anything. Point your existing agent at an Exotel number, test it on free credits, and our team stays with you until you go live.

Free credits to test

Every new account starts with free credits. Run your migrated agent on real calls before you spend anything.

A team that migrates with you

Our solutions engineers help you set up numbers, connect your agent, and test calls, so cutover is planned, not rushed.

Your agent stays as it is

Prompts, tools, and your agent platform stay the same. Only the number and the network underneath change.

Five steps to your first call
01Create an account
02Get your number
03Open your sandbox account and go to App Bazaar
04Trigger a call with the Connect Voice AI API, passing the customer’s number and your bot’s WebSocket URL
05Exotel dials the number and connects the answered call to your WebSocket server
Start building
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Security and compliance

7000+ businesses trust Exotel to run their voice at scale.

Whichever provider you evaluate, ask for current compliance evidence, deployment documentation, and contractual assurances.

UL-VNO telecom licenseTRAI and DoT
SOC 2 Type IISecurity and availability
ISO 27001Information security
HIPAAHealthcare data
GDPRData privacy
PCI-DSSPayment card data
Recognised by analysts
ForresterRead the report
Featured in the Forrester CPaaS Landscape, Q2 2025
OmdiaRead the report
Exotel marks the next chapter of CPaaS and unified CX
GartnerRead the report
Featured in the Emerging Market Quadrant, May 2025
IDCRead the report
Named a Leader in the IDC MarketScape for Front-Office AI, 2025
Seen enough?

A licensed telecom network and your Voice AI, under one platform. Why look further?

Start buildingBook a demo
Smiling man holding a laptop
Frequently asked questions

Still on the fence? Fair enough.

What is the difference between Exotel and Vobiz?

Vobiz is self-serve telephony for voice-AI builders: SIP trunks, numbers and a voice API that plug into agent platforms like Vapi and Retell AI. Exotel runs the telephony and the layers above it, including a voice agent builder, a contact center and conversation quality analytics, on one platform.

Is Exotel better than Vobiz for voice AI?

It depends on what you need. Vobiz fits developers who already run an agent platform and want a line in minutes with published rates. Exotel fits teams that need a licensed Indian network, live call control, human handoff and quality scoring under one contract. Test both on your own call flows.

Can I keep my Vapi, Retell AI or LiveKit agent?

Yes. AgentStream connects compatible agent platforms to live calls over SIP or WebSocket, with open-source bridges for major stacks.

Vobiz quotes sub-80ms latency. How does Exotel compare?

AgentStream uses under 20ms on Exotel’s media path and streams at 16kHz by default, up to 24kHz. Latency figures measure different things, so ask every vendor which legs their number covers and test P95 response time on a real PSTN call.Source

Vobiz offers platform noise cancellation. Does Exotel?

Yes. Exotel pairs edge noise cancellation with clean 16 or 24kHz audio and stereo tracks, with caller and bot on separate channels, so your AI stack has more headroom to filter noise and you can see which side caused a problem.

Vobiz is quick to sign up. How fast can I go live on Exotel?

Standard virtual numbers are provisioned in minutes from the dashboard or API, and a standard bot can go live the same day. Start with one Connect Voice AI API call, or clone the open-source Agent-Stream repo and have a working bot on a call in an afternoon.

Vobiz is cheaper per minute. Why pay for Exotel?

Enterprises buy uptime, compliance and support along with minutes. Exotel prices in INR with no fixed commit on standard SKUs, includes NDNC scrubbing on outbound, and adds a telecom licence, Active-Active + DR and a contact center. A single DND violation fine can cost months of per-minute savings.

Does Vobiz support human handoff?

Vobiz can transfer calls over SIP, but it has no contact center of its own. Exotel hands off to its own contact center with conversation context, and supervisors can whisper, barge or snoop on live bot calls.

Which platform is better for high-volume outbound calling?

Both support outbound campaigns. Vobiz sells CPS and concurrency self-serve and has a predictive dialer. Exotel adds automatic NDNC and DLT handling, multi-operator failover and Active-Active + DR. Compare concurrency, dialing rules, answer rates and cost under the same workload.

Which platform should regulated enterprises choose?

Evaluate both against your security, residency and regulatory requirements. Exotel holds a UL-VNO telecom licence and SOC 2 Type II, ISO 27001, PCI-DSS, HIPAA and GDPR certifications. Ask both for current compliance evidence and contractual assurances.

How should we compare pricing?

Vobiz publishes per-minute and capacity rates; Exotel prices on request. Compare the total cost of the workflow at the same volume: telephony, numbers, capacity, agent platform, inference, QA tooling and support.

Can I move from Vobiz in phases?

Yes. Move one flow, compare it against your current setup, and expand when it meets your criteria.

How does the bot handle a caller who interrupts?

Voice activity detection and a turn-taking model run locally on Exotel infrastructure, so the bot can stop mid-sentence without waiting on a network round trip. Interruption sensitivity is set per bot, because a collections call and a healthcare call want different thresholds.

Can the bot look things up during the call?

Yes. The model calls your APIs or an MCP tool server mid-call, with tenant isolation on every request, and every tool call is timed and recorded alongside the transcript.