Public estimates support a growing global category, but their definitions are not interchangeable. Do not average these forecasts or present their spread as a statistical confidence interval. (grandviewresearch.com)
| Publisher and evidence date | Geography and scope | Estimated 2025 revenue | Estimated 2026 revenue | Longer-term forecast | Interpretation |
|---|---|---|---|---|---|
| Grand View Research; public summary observed 23 October 2026; publication day not established | Global AI voice agents, segmented by agent type, application and end use | $2.5bn | $3.5bn | $35.2bn in 2033; 39.0% forecast CAGR for 2026–2033 | Publisher estimate, not measured US expenditure. (grandviewresearch.com) |
| Meticulous Research; October 2026 publication | Global voice AI agents, including platforms, speech infrastructure, telephony/integration, testing, services and non-telephone channels | $3.40bn | $5.10bn | $43.83bn in 2036; 24.0% forecast CAGR for 2026–2036 | Broader than a US business-telephone-agent market. (meticulousresearch.com) |
Grand View Research attributes 38.1% of its 2025 global estimate to North America. That is neither a US-only figure nor a 2026 regional estimate. The accessible summary does not establish a standalone US dollar total. (grandviewresearch.com)
Meticulous explicitly includes web and in-app voice, drive-throughs, kiosks, vehicles and devices, alongside telephone and contact-centre applications. Its larger estimate therefore cannot simply be treated as a second measurement of precisely the same purchasing category. (meticulousresearch.com)
Can the desk publish its earlier $1–3bn US spending estimate as market fact?
No. The supplied desk material labels that range as a low-confidence planning assumption. This research did not establish sufficient public evidence to validate it as annual US expenditure.
A defensible future US estimate would need to specify:
- Who pays: US end customers, rather than the supplier’s headquarters location.
- What is purchased: telephone-agent applications, infrastructure, implementation and managed operations.
- How double counting is removed: an application supplier’s revenue may already incorporate payments to speech and telephony providers.
- What revenue means: recognised revenue, annual recurring revenue, annualised usage and bookings are not interchangeable measures.
- What is excluded: human-agent assistance, transcription-only products, traditional IVR and unrelated creative-audio revenue.
These are the desk’s proposed measurement rules. Until the necessary supplier and contract data exist, unknown is more useful than a falsely precise US total.