How VoiceStack works
VoiceStack is an independent, neutral price tracker for AI voice agent platforms. We are not owned by, and do not sell, any voice platform.
Where the numbers come from
- Every figure is copied from the vendor's own public pricing page or documentation, linked on each platform page with the date it was checked.
- If a vendor does not publish a number, we write "not published". We never estimate, average or guess a price. Currently without a published per-minute rate: Synthflow, Phonely.
- Where a vendor's page contradicts itself, we show the plan-card figure and flag the conflict on that platform's page.
- Calculator defaults are the vendor's own example or standard option for each add-on (e.g. Retell's GPT 5.1 + platform voice example). You can overwrite every input.
- Third-party trackers are used only to date past changes in the changelog, and are labelled as such. Current terms are always confirmed on the vendor's page.
- All prices are in US dollars, before tax, for self-serve plans unless noted. Enterprise deals are usually cheaper and are not public.
How rankings work
There are none. Tables sort by the number you choose. Placement, inclusion and the numbers shown are never for sale and are not affected by affiliate relationships.
Affiliate disclosure
Some outbound links (currently HighLevel and ElevenLabs) are affiliate links. If you sign up through one, VoiceStack may earn a commission at no extra cost to you. Affiliate links are marked on platform pages and carry rel="sponsored". Platforms without an affiliate program are covered exactly the same way.
Corrections
Prices change often. If you spot an outdated number, tell us with the source link and we'll update it and log the change. Email [email protected].
Contact
Questions, corrections or partnership enquiries: [email protected]
Download the data
The full dataset is published as prices.json.