Methodology
We convert every plan's included usage to minutes of speech using a flat assumption of 1,000 characters per minute, applied identically across providers so the comparison stays apples-to-apples. This is a simplification — actual character-to-minute ratios depend on the voice model, language, and pacing settings used at generation time.
Where a provider meters usage in "generation hours" instead of characters (Murf), we use their own published hours-per-plan figures directly rather than converting through characters.
Plans priced only on annual billing are noted as such; monthly-billing prices are used by default for comparability. Enterprise and custom-quote tiers are excluded from the calculator because no public per-unit price exists to convert.
Why trust these numbers
Every source link in the table points to the provider's own pricing or affiliate terms page, not a third-party summary. We re-check these figures periodically; the "last checked" date at the top of the page reflects the most recent pass.
A note on PlayHT
PlayHT is not currently listed. Its affiliate signup page is returning a 404, and third-party reports of a 2025 Meta acquisition and full shutdown are unconfirmed against an official source. Rather than publish figures for a provider whose status we can't verify, we've pulled it until that's resolved.