OpenAI rolled out GPT-Live-1 this week, a new voice AI model now live in ChatGPT on iOS, Android, and the web, and available to developers through the API at $0.05 (roughly 4p) a minute. What makes it different from the voice assistants most people have already dismissed as clunky is that it’s full-duplex: it can listen and speak at the same time, the way a real conversation actually works, rather than waiting silently for you to finish a sentence before responding. OpenAI says it also handles interruptions, background noise, and long conversations more naturally, and crucially for business use, it now supports phone-based voice agents through telephony integrations.
For UK SMEs, the headline isn’t the technology itself, it’s the price and accessibility. Building a genuinely natural-sounding AI phone agent used to require serious budget and a specialist developer. At 4-5p a minute through a standard API, a small business could realistically run an AI receptionist, booking line, or first-line customer support agent for a fraction of the cost of an extra staff member, and without the multi-month enterprise contracts that voice AI has typically demanded until now.
Where this actually helps a small business
Think about the calls your business currently misses or fumbles: after-hours enquiries, simple booking or availability questions, “what are your opening hours” calls, or basic triage before a call gets passed to a human. Those are exactly the tasks a natural-sounding voice agent is now cheap enough to handle well. It won’t replace a skilled salesperson closing a complex deal, but it can stop a potential customer hanging up at 7pm because nobody answered, or free up staff time currently spent repeating the same five answers to the same five questions every day.
The catch, as always with a brand-new capability, is that “cheap and available” isn’t the same as “ready to deploy.” Wiring a voice model into your actual phone system, your booking software, and your CRM so it does something useful (rather than just sounding impressive) still takes proper integration work: deciding what it’s allowed to say, what it should escalate to a human, and how it handles the calls that don’t fit the script.
Don’t build this in isolation
If you’re weighing up whether an AI voice agent makes sense for your business, the right first step isn’t picking a tool, it’s mapping which calls or conversations are actually costing you time or business today. Once you know the use case is real, getting it built properly and connected to your existing systems, rather than bolted on as an afterthought, is exactly the kind of project BuildApps takes on for UK businesses.
The takeaway
OpenAI’s GPT-Live-1 launch this week makes natural-sounding AI voice agents cheap enough for a small business to seriously consider for the first time, not just large call centres. Before you rush to build anything, spend twenty minutes working out which calls your business is actually missing or mishandling today. That’s the answer that tells you whether this is worth acting on now, or worth revisiting once the tooling matures a little further.
