Terms of Use

Last updated: May 2026

1. Acceptance of terms

By accessing and using this website ("TTS API Cost Calculator"), you accept and agree to be bound by these Terms of Use. If you do not agree, do not use this site. This site is operated by DayOne Labs Ltd (Company No. 17192046), registered in England and Wales.

2. Nature of the service

This tool provides estimates of text-to-speech API costs based on publicly available pricing documentation from third-party providers. It is designed for informational and comparison purposes only.

3. Pricing accuracy disclaimer

All cost estimates are approximations. Actual costs may differ due to:

Provider pricing changes not yet reflected in our data
Volume discounts, enterprise agreements, or promotional offers
Character counting differences between providers (e.g. treatment of whitespace, SSML tags, Unicode)
Overage charges, minimum fees, or per-request surcharges
Currency conversion or regional pricing variations
Free tier credits, trial periods, or prepaid balances

Always verify pricing directly with the provider before making purchasing decisions. We make reasonable efforts to keep pricing data current but provide no guarantee of accuracy.

4. No affiliation or endorsement

This site is not affiliated with, endorsed by, or sponsored by any of the text-to-speech providers listed. All product names, logos, and trademarks are the property of their respective owners. Their inclusion on this site is for identification and comparison purposes only and does not imply any endorsement or partnership.

5. Affiliate links & advertising

This site may contain affiliate links. If you click through and make a purchase or sign up for a service, we may receive a commission at no additional cost to you. Affiliate relationships do not influence the pricing calculations displayed on this site. All calculations are derived from the same published API pricing data regardless of whether an affiliate relationship exists with a given provider.

This site also displays third-party advertisements. We are not responsible for the content, accuracy, or practices of advertised products or services.

6. Limitation of liability

To the fullest extent permitted by law, DayOne Labs Ltd shall not be liable for any direct, indirect, incidental, consequential, or special damages arising from your use of or reliance on this tool, including but not limited to financial losses resulting from inaccurate cost estimates.

This tool is provided "as is" and "as available" without warranties of any kind, whether express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, and non-infringement.

7. Your content

Text you enter into the calculator is processed entirely within your browser. We do not collect, store, transmit, or have access to any text you paste. You are solely responsible for ensuring you have the right to use any content you enter.

8. Intellectual property

9. Governing law

These terms are governed by and construed in accordance with the laws of England and Wales. Any disputes shall be subject to the exclusive jurisdiction of the courts of England and Wales.

10. Changes to these terms

We reserve the right to modify these terms at any time. Continued use of the site after changes constitutes acceptance of the revised terms.