Step-by-step guides for building with the Speechify text-to-speech and voice cloning API: streaming, captions, voice agents and integrations.
SpeechifyAI's text-to-speech API takes an optional safety_identifier, a keyed hash of your own user id, so one end user can be limited or blocked while the rest of your workspace keeps working. On 13 October 2026, seven other TTS APIs documented no way to do that.
8 min read, 6 min listen
Since 9 October 2026, SpeechifyAI takes an LLM's reply over a WebSocket as it is written. From Google Cloud us-east4 that day, the first word was audible 49 ms after the LLM finished its first sentence, against 68 ms with one HTTP request per sentence.
10 min read, 7 min listen
LiveKit's Speechify plugins, for Python and Node.js, add Speechify TTS to an AgentSession in one line. The Python plugin streams each sentence: 98 ms median to first audible audio from US East on 12 Oct 2026.
9 min read, 8 min listen
Speechify's official LiveKit plugin streams word-level timestamps alongside the audio. Read them by overriding transcription_node and you get word-synced captions in a Python voice agent, with no extra API calls.
6 min read, 6 min listen
Add a listen button to documentation with the Speechify API. A framework-agnostic walkthrough with a concrete example you can copy.
4 min read, 3 min listen
What streaming text-to-speech makes possible: read-aloud, voice agents, call narration, live captions, and read-along highlighting, all built on the Speechify streaming endpoints.
2 min read, 3 min listen
Turn an RSS feed into a daily audio digest with the Speechify API. Fetch items, join the text, generate one audio file, and deliver it.
1 min read, 2 min listen
Build a Slack bot that reads channel messages aloud with the Speechify API. Wire events, synthesize audio, and post the clip back to the channel.
2 min read, 2 min listen
Give the Speechify text-to-speech API a URL and the page comes back as narrated audio. Fetch, extract the article text, chunk on sentence boundaries, synthesize each chunk with POST /v1/audio/speech.
4 min read, 4 min listen
What engineers actually use to add voice to web and mobile apps, and the four decisions that matter: the browser's built-in API versus a cloud one, streaming versus batch, where the key lives, and how to keep audio playing on iOS.
6 min read, 5 min listen
Which speech platform to pick when your chatbot has to talk. The decision is not voice quality, it is whether you need a TTS API or a full voice agent, plus how the model reads account numbers and order IDs back to a caller.
6 min read, 6 min listen
Generate the same script in English, German, Spanish, French, Italian, and Portuguese with the Speechify TTS API. Pick a simba-3.0 voice for each locale, call POST /v1/audio/speech per language, keep the key server-side.
7 min read, 6 min listen
How a Speechify provider for the AI SDK's generateSpeech() works: a dependency-free speech model that maps POST /v1/audio/speech onto SpeechModelV4, key held server-side in a Next.js route. Speechify now maintains one on npm, @speechify/ai-sdk-provider.
13 min read, 9 min listen
Clone a voice from a browser upload, synthesize speech with it, and keep your API key server-side. A working Next.js voice cloning app built on the Speechify API, no GPU required.
13 min read, 8 min listen
Stream Speechify TTS as raw PCM, keep the API key server-side, and schedule each chunk into the browser's Web Audio API for low-latency playback.
9 min read, 7 min listen
Point Deepgram Voice Agent at the open-source tts-shims OpenAI-compatible proxy to speak with a Speechify voice. The shim answers Deepgram's open_ai TTS request and keeps your Speechify key server-side.
8 min read, 8 min listen
Use SSML pauses, speaking rate, and pronunciation aliases to shape Speechify TTS output from one API request, and know which tags current models apply.
8 min read, 6 min listen
Turn long-form ePub or Markdown into a single narrated chapter MP3 with a runnable Python demo: chunk on sentence boundaries, synthesize each chunk, stitch with ffmpeg.
9 min read, 8 min listen
Speechify is now a direct provider in speech-sdk. Switch existing calls over with a factory function and an API key, no new client required.
4 min read, 4 min listen
Clone a voice from a short sample and use it to narrate dynamic video content programmatically via the REST API.
10 min read, 7 min listen
Use the Speechify API's word-level timestamps to generate accurate WebVTT captions for your synthesized audio.
7 min read, 5 min listen
How to stream audio from the Speechify TTS API in Python with plain HTTP and requests. Covers chunked streaming to disk and piping audio to a player without waiting for the full payload.
3 min read, 3 min listen
A practical guide to synthesizing speech in Node.js using the Speechify TTS API. Covers installation, a basic synthesis call, streaming audio to disk, and what to reach for next.
2 min read, 2 min listen
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