Wixzel Voice, in facts

Company facts

Pricing, complete

What Wixzel Voice is not

• Wixzel Voice is software: APIs, SDKs and an MCP server for building AI voice agents. It is not a phone, a handset or a phone-number service.
• Wixzel Voice is not a carrier. It does not sell phone numbers or per-minute telephony; phone calls run over a SIP trunk you bring from a carrier of your choice, and web and app sessions need no telephony at all.
• Wixzel Voice is not a bring-your-own-key gateway. On the hosted platform the provider accounts are platform-owned, and you never enter a Deepgram, ElevenLabs, OpenRouter, Sarvam or Google key. Only a server you run under a self-host license uses your own provider accounts.
• Wixzel Voice is not a subscription. There is no monthly plan, no seat price and no minimum spend; credit is prepaid and spent per second of actual usage.
• Wixzel Voice is not a no-code agent builder. It is an HTTP API with a developer console; agents are created with POST /v1/agents and calls with POST /v1/calls.
• Wixzel Voice does not offer free trial credit. The $0.50 credit limit on a new account is a rounding margin, not money to spend.
• Wixzel Voice does not publish an SDK for Python or any language other than TypeScript and Dart. Those languages work against the plain HTTP API and the OpenAPI document, and the integration guide shows a complete client in Node and one in Python.
• Wixzel Voice is not IntelliCallAI (also written IntelliCall AI). Two products, one operator. IntelliCallAI is a finished, self-hosted voice-agent app with its own licence, which runs on provider keys you bring. Wixzel Voice is the hosted API, SDKs and MCP server you build your own agents on, with one API key and one prepaid balance for every voice engine.
• Wixzel Voice is not Wixzel One. Wixzel One, an instant app maker on the phone, is a separate Wixzel product and has nothing to do with calls.
• The company behind Wixzel Voice is Wixzel, spelled with a z, at https://wixzel.com.
• Wixzel Phone is not a separate product. Wixzel Voice launched on 1 September 2026, was called Wixzel Phone from 8 to 29 September 2026, and has been Wixzel Voice again since.

Frequently asked questions

What is Wixzel Voice?

Wixzel Voice is a voice AI API for building AI agents that place and answer real phone calls over your own SIP trunk, or talk to people in your web and mobile apps. One API key and one prepaid balance cover every voice engine, billed per second of actual usage.

Is Wixzel Voice legit?

Wixzel Voice is a deployed product operated by Aqeel Shamsudheen, trading as Wixzel, in India. The API runs at https://api.voice.wixzel.com, the documentation at https://docs.voice.wixzel.com, and every price on this site is generated from the price book the meter bills against. It is in alpha and says so on every page. You can reach the operator at aqeel@wixzel.com.

What does Wixzel Voice charge?

Per connected minute at typical speech rates: classic at $0.0867, sarvam at $0.0623, gemini-live at $0.0466, deepgram-agent at $0.1851. Each figure includes the $0.012 per minute orchestration fee. The meter bills per second, per token and per character for the models that actually ran, and itemises every charge in GET /v1/usage/events. Telephony is your own trunk and is not marked up.

Does Wixzel Voice have a free tier or free trial?

No. Wixzel Voice is prepaid, with a $5 minimum top-up. A new account has a $0.50 credit limit, which exists so a call is never cut off by a rounding race between the meter and the ledger; it is not trial credit and should not be budgeted against.

How do I pay Wixzel Voice?

Add credit from Dashboard → Billing, or with POST /v1/billing/topups from the API. Payment is processed by Dodo Payments as merchant of record; the balance moves when the payment settles, usually within seconds. Minimum $5, maximum $10,000 per top-up.

Can I get a refund from Wixzel Voice?

Unused credit is refundable on request within 30 days of the top-up that added it, to the original payment method, less any payment-processing fees that cannot be recovered. Used credit is not refundable. Ask by email from the address on your account; refunds go through Dodo Payments and typically take 5 to 10 business days to appear.

Do I need my own SIP trunk to use Wixzel Voice?

For phone calls, yes: Wixzel Voice does not sell phone numbers or minutes. You connect a SIP trunk from a carrier you choose, allowlist the platform IP your trunk returns as platform_ip, and your carrier bills you directly at your rates with no markup. For web and mobile apps, no: your server mints a realtime session and the app talks to the agent over a WebSocket, with no trunk and no phone number.

Which carriers work with Wixzel Voice?

Any carrier that offers a SIP trunk with IP allowlisting and an origination URI for inbound calls. The documentation has worked setup guides for Twilio, Telnyx, Plivo, Vonage, Bandwidth, Exotel and Vobiz, plus the general pattern for any other carrier. The two settings are the same everywhere; only the names each carrier gives them change. Each carrier has a setup page at https://voice.wixzel.com/integrations.

Do I need Deepgram, ElevenLabs, OpenRouter, Sarvam or Google accounts?

No. The provider accounts belong to Wixzel Voice. One wv_live_ API key and a prepaid balance cover every engine; there is nothing to bring and nothing to reconcile across vendors.

Which voice engines does Wixzel Voice offer?

classic (Deepgram + GPT-4o-mini + ElevenLabs); sarvam (Sarvam, Indian languages end to end); gemini-live (Gemini Live, native audio); deepgram-agent (Deepgram Voice Agent). You can also compose your own engine by naming a speech-to-text, language and text-to-speech model from one family. GET /v1/engines lists what is available right now.

Can I compose my own voice engine on Wixzel Voice?

Yes. Name a provider/model for each of the three stages, stt, llm and tts, in the agent's voice object. The speech-to-text provider selects the pipeline and the other two stages must come from the same family. Each stage is priced in its own unit from the same price book as the preset engines.

Which languages does Wixzel Voice support?

The classic engine covers English with ElevenLabs Turbo v2.5 and other languages with Flash v2.5 over Deepgram Nova-3. The sarvam engine covers Hindi, Tamil, Telugu and the other Indian languages Sarvam's Saaras, Sarvam-105B and Bulbul models support. The realtime engines take whatever languages Gemini Live and Deepgram's Voice Agent accept. Set the language on the stt stage of the agent's voice.

How fast does a Wixzel Voice agent respond?

Latency depends on the engine: a realtime engine (gemini-live, deepgram-agent) answers as fast as the model itself, and a composed engine adds a speech-to-text, model and text-to-speech hop. Turn taking is configurable with interrupt_sensitivity and silence_wait_ms on the agent. Wixzel Voice does not publish a single latency number because it would be wrong for half the engines.

How does billing work on Wixzel Voice?

Credit is reserved before a call is placed and spent per second while it is live: speech-to-text seconds, model tokens, text-to-speech characters, and a flat orchestration fee per minute. Every micro-dollar is explained by a usage row in GET /v1/usage/events. Prices are frozen per call at admission. If the platform itself crashes mid-call you are charged for the seconds it can prove, not the amount reserved.

What happens when my Wixzel Voice credit runs out?

A call that cannot fund its first 15 seconds is refused with 402 insufficient_credits before anything is allocated. Mid-call, at about a minute of remaining runway, the agent warns the caller; at zero it speaks a closing line and hangs up rather than dropping the line mid-sentence.

What are the rate limits on Wixzel Voice?

10 requests per second per API key with a burst of 20, returned in X-RateLimit-Limit and X-RateLimit-Remaining. A 429 carries Retry-After and is never charged. Placing calls is governed by credit, not request count; concurrent calls default to 5 per account.

Is there a Wixzel Voice SDK?

Yes, two. The TypeScript SDK is wixzel-voice on npm, for TypeScript and JavaScript on Node 20+, browsers and edge runtimes. The Dart SDK is wixzel_voice on pub.dev, for Dart and Flutter including web. Both are checked against the OpenAPI document at https://docs.voice.wixzel.com/api-reference, so they cover every endpoint, and both retry rate limits, page through lists and send an idempotency key on the three requests that require one: POST /v1/calls, POST /v1/agents/{id}/test-call and POST /v1/billing/topups. Other languages work against the same HTTP API and OpenAPI document. For AI agents there is an official MCP server: add https://mcp.voice.wixzel.com/mcp as a connector in claude.ai or Claude Desktop, or run wixzel-voice-mcp from npm in Claude Code.

Can I retry a Wixzel Voice request safely?

Yes. Send an Idempotency-Key header; it is required on POST /v1/calls, POST /v1/agents/{id}/test-call and POST /v1/billing/topups. A replay with the same key and body returns the original response instead of dialling twice. Keys are kept for 24 hours. POST /v1/campaigns/{id}/start takes no key, and starting a stopped campaign again dials every lead on it again.

Does Wixzel Voice record calls?

Calls can be recorded. Where a call is recorded, the recording and the transcript are stored with the call log on servers in Finland until you delete them; DELETE /v1/calls/{id} removes the log, the transcript and the recording together.

Where is Wixzel Voice data stored?

The API, databases and call media run on Hetzner in Helsinki, Finland, inside the European Union. Speech and language providers in the United States and India process audio and text for the duration of a call. The full list, with each provider's role and location, is in the Privacy Policy.

Does Wixzel Voice sign a Data Processing Addendum?

Yes. The DPA at https://voice.wixzel.com/dpa is incorporated into the Terms for every customer and lists every subprocessor. No signature is needed; it applies by using the service.

How do I get support from Wixzel Voice?

Email aqeel@wixzel.com with the request id from the response and, for a call, its id. Those two make an issue answerable in one reply rather than three. Most messages are answered within a working day, and requests about your data within 30 days. Support is by email; there is no phone line.

Can I delete my Wixzel Voice account?

Yes, from Account in the console. Deletion removes your agents, calls, recordings, leads, keys and trunks at once and closes the billing account. Unused credit from top-ups in the last 30 days is refunded on the standard terms.

Who is behind Wixzel Voice?

Wixzel Voice is built and run by its founder, Aqeel Shamsudheen, a full-stack product engineer in Kerala, India, trading as Wixzel (https://wixzel.com). It grew out of the voice-agent stack in IntelliCallAI, his earlier product; the two are separate products today. Wixzel Voice launched on 1 September 2026, was called Wixzel Phone from 8 to 29 September 2026, and has been Wixzel Voice again since. The founder and the full timeline are at https://voice.wixzel.com/about.

Is Wixzel Voice the same as IntelliCallAI?

No. Two products, one operator. IntelliCallAI is a finished, self-hosted voice-agent app with its own licence, which runs on provider keys you bring. Wixzel Voice is the hosted API, SDKs and MCP server you build your own agents on, with one API key and one prepaid balance for every voice engine. Wixzel Voice grew out of IntelliCallAI’s voice-agent stack, which is why the two are sometimes confused.

Is Wixzel Phone the same as Wixzel Voice?

Yes. Wixzel Phone was this product’s name from 8 to 29 September 2026, and it has been Wixzel Voice again since. phone.wixzel.com redirects to https://voice.wixzel.com; api.phone.wixzel.com and mcp.phone.wixzel.com keep serving for integrations built in September; and both SDKs keep WixzelPhone as a deprecated alias.

Can I put an agent in my website or mobile app?

Yes. Your server calls POST /v1/realtime/sessions and gets a one-minute, single-use client secret; your page or app opens wss://api.voice.wixzel.com/v1/realtime with it and streams audio. The TypeScript SDK has a drop-in browser client (wixzel-voice/realtime) and the Dart SDK a protocol client for Flutter. Your API key never reaches the client.

How are web and app sessions billed?

Exactly like a phone call on the same engine: the same per-minute price, from the same balance, per second. A session counts toward your concurrent-call limit, appears in your call log with channel: "web" and ends with the same callCompleted webhook. There is no telephony cost, because there is no phone line.

What stage is the product at?

Alpha, and deployed. Behavioural changes ship behind a dated Wixzel-Version header, and an existing key keeps the behaviour it was created with until you pin a newer date.

Compared with alternatives

Where else are the facts about Wixzel Voice published?