AI Voice Agents
Voice agents that answer the phone, complete the task and hand over cleanly when a colleague is needed. The same stack turns your existing call and meeting recordings into searchable information your team can actually use.
Pricing from
Overview
A voice agent answers the phone, establishes what the caller needs and takes action on it. It checks your diary and books the appointment. It looks up the order and confirms the status. It captures the details and raises the ticket. Where a call needs a colleague, it transfers with the conversation history attached so your customer continues from where they left off.
We build and support these for businesses across the UK. The stack is chosen per project: OpenAI’s Realtime API with SIP phone connectivity, xAI’s Grok Voice Agent Builder, ElevenLabs and related telephony providers, according to latency, cost, compliance and how your systems connect. ChatGPT Voice (GPT-Live) is OpenAI’s consumer voice experience inside ChatGPT. It is useful context for what the models can do in conversation, but production phone agents for your business run on the developer and telephony stack, not a ChatGPT subscription.
Want to hear a live example first? The voice chat on this website runs on Grok Voice Agent today, so you can try a real conversation before we scope anything for your lines.
Agents do more than talk. They use tools: calendar and CRM lookups, order status, ticket creation, web or document search, and MCP connectors into systems that already have no ready-made integration. You can start on a provisioned number for testing, or bring your existing UK numbers over SIP so callers keep dialling the same line.
The second half of this work is the material you have already recorded. Meetings, client calls, interviews and training sessions become searchable with speaker identification and timestamps. From there you can extract action items, track themes across support calls or turn a recorded webinar into a written article.
Where you need video produced rather than processed, our in-house production team covers that, and our AI image and video generation service covers generated assets.
What’s included
Voice Agents That Complete the Task
Connected to your diary, CRM and order systems so a caller can book, check status or raise a query and have it dealt with on the call, not just left as a message.
Phone Numbers & SIP
Test on a provisioned number, or bring your existing UK lines over SIP so the agent sits on the numbers your customers already know.
Tools, MCP & Warm Handover
Agents call tools and MCP connectors during the conversation. When a human is needed, the call transfers with full context attached.
Transcription with Speaker Identification
Meetings, client calls and interviews converted into searchable text with timestamps and speakers labelled.
Analysis & Content Repurposing
Sentiment, recurring themes and coaching opportunities across your call archive, plus articles and summaries from webinars, podcasts and interviews.
How we deliver
Our AI Voice Agents Process
Step 1: Test Against Your Real Calls
We run your own recordings through the system first, so you see what is achievable with your customers, accents and call conditions before anything is built.
Step 2: Define Scope, Tone & Tools
We agree what the agent handles, what it transfers, how it introduces itself, and which systems it may use.
Step 3: Build, Connect & Number Setup
The agent is connected to your tools and telephony: provisioned number or SIP to your existing lines.
Step 4: Launch on a Portion of Calls
It handles an agreed share of traffic first. We review transcripts together and refine before widening its remit.
On this page
Client work
What this looks like in practice
The voice chat on this website runs on Grok Voice Agent through our Forerunner® AI Live Chat plugin. That is the same class of speech-to-speech model stack we use when we build phone agents for clients. We choose and configure the model, tools, handover rules and telephony for your systems, then test against your own call recordings so the agent is tuned to your customers and your processes before it takes live traffic.
Pricing from
Questions
AI Voice Agents FAQs
What does a voice agent cost?
A scoped first build starts at £1,500, around two days at £700 per day. Model and telephony usage is charged on top, often in the region of a few pence per minute of talk time depending on the stack. For example Grok Voice is billed simply per minute of audio; OpenAI Realtime is token-based and varies with caching and how much the agent speaks. Complexity depends on the number of systems involved, so we scope properly before quoting.
ChatGPT Voice vs a business phone agent: what’s the difference?
ChatGPT Voice (now GPT-Live) is the voice experience inside ChatGPT. It is not a phone line for your customers. Business agents use production APIs and telephony (OpenAI Realtime with SIP, Grok Voice Agent Builder, or similar) so calls hit your number, tools and handover rules. You can try Grok Voice Agent today via the voice chat on this website.
Can we keep our existing UK phone number?
Yes. Most clients bring their numbers over SIP from their current provider. Provisioned numbers are useful for testing; production usually stays on the numbers your customers already dial.
Should we tell callers they are speaking to AI?
We recommend saying so at the start of the call. It sets clear expectations about what the agent can handle and when a colleague will take over.
How accurate is transcription?
Above 95% on clear audio. Accents, crosstalk and background noise affect it, so we test against your own recordings and give you a realistic figure before you commit.
What happens when a call goes beyond its remit?
It transfers to a colleague with the full context attached. We define those conditions with you during setup.
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