GUIDE

The best text to speech API in 2026: which one for which job

There is no single best text to speech API. ElevenLabs, OpenAI, Google, Amazon Polly, Azure, Cartesia, Deepgram, Fish Audio and SuperClonica each win somewhere and lose somewhere else. The useful question is what your app needs most: the most expressive voice, the lowest latency for a talking agent, the most languages, the lowest price for many hours, or the option to run it yourself.

This guide compares them by those needs, with list prices from the official pages as of October 2026. We make SuperClonica, so we say plainly where it is the right pick and where it is not.

Get a free API key Hear the voices free Or run the engine yourself

What to compare

Five things decide most choices. Check them against your own text and traffic before you commit.

  • Sound: listen to the same line from each service; voices differ more than specifications.
  • Price at your volume: per-character prices range from $4 to $80 per million characters, about $0.24 to $4.80 per hour of speech.
  • Latency and streaming: whether the audio can start before the whole text is voiced, and whether the text itself can be streamed in.
  • Languages and voices: how many languages, whether you can clone or train a voice, and whether there is a catalog to choose from.
  • Terms: commercial use, where your text is processed and whether you can self-host.

Picks by job

These are honest starting points, not rankings.

  • The most expressive voices and cloning from a short sample: ElevenLabs.
  • Voice agents that speak while a language model is still writing (text streamed in over WebSocket): Cartesia, Deepgram or ElevenLabs.
  • The most languages and locales, SSML and enterprise contracts: Azure AI Speech or Google Cloud.
  • Many hours of speech for little money, a catalog of character and narrator voices, custom voices: SuperClonica, from $5 a month for up to 216 hours.
  • Running it on your own hardware with no API at all: the free SuperClonica engine, Kokoro or Piper.

Where SuperClonica fits

The SuperClonica speech API bills by time, not characters: a plan gives minutes of audio in every 10-minute window, so the $5 Starter plan voices up to 216 hours a month used without a break. The same hours cost from about $52 with Google Standard voices to about $1,037 with ElevenLabs Multilingual at list prices. The first sound streams from 300 ms, and on a paid plan every voice of the catalog and your own trained voices work through the API. The free plan gives a minute a day to try it.

It is not the right pick if you need Chinese (Supertonic 3 does not speak it yet), SSML, word timings, text streamed in over WebSocket, or a long track record with uptime contracts.

Try before you choose

Write down three lines your app will really say, one short, one long and one with numbers and names. Run them through the free tiers of two or three services, listen on the speakers your users have, and measure how long the first sound takes from your server. On SuperClonica you can hear any catalog voice free on its page and get an API key with a free minute a day by signing in with Google or GitHub.