Benchmarks, pricing and build guides for text to speech, every number dated and every post narrated by Harper.
Product updates
Simba 3.5 is SpeechifyAI's recommended text-to-speech model from 21 October 2026: 48 languages under one model id, simba-3.5, on every plan and every synthesis endpoint. The request, the languages, the price and how to switch from Simba 3.2.
Read story3 min read, 4 min listen
48languages on one model, Simba 3.5
Quality, price and speed, with dated numbers.
Benchmarks & pricingUpdated Oct 16, 2026
1,244Elo on Artificial Analysis
Benchmarks & pricingUpdated Oct 16, 2026
Benchmarks & pricingUpdated Oct 16, 2026
$91a month for 10M characters
Benchmarks & pricingUpdated Oct 16, 2026
Benchmarks & pricingUpdated Oct 16, 2026
47 msto first audible audio from US East
Benchmarks & pricingUpdated Oct 16, 2026
Build guidesOct 15, 2026
Limit one end user, not your whole workspace.
Build guidesOct 15, 2026
Build guidesUpdated Oct 12, 2026
49 msfrom a finished sentence to first sound
Build guidesUpdated Oct 12, 2026
Benchmarks & pricingUpdated Oct 16, 2026
15concurrent requests on the Starter plan
Benchmarks & pricingUpdated Oct 16, 2026
Build guidesUpdated Oct 12, 2026
One line in your AgentSession.
Build guidesUpdated Oct 12, 2026
Benchmarks & pricingSep 24, 2026
379 ms106 msto first audio on Coval
Benchmarks & pricingSep 24, 2026
Product updatesSep 11, 2026
The API, from your terminal.
Product updatesSep 11, 2026
Build guides
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
Build guides
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
Build guides
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
Build guides
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 guides
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
Build guides
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
Company
The safeguards SpeechifyAI operates to prevent synthetic voices being used for election misinformation, and the commitments behind them.
6 min read, 6 min listen
Build guides
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
Benchmarks & pricing
The tools for producing narration without hiring voice actors, compared on cost per finished hour rather than per seat. Studio subscriptions cap downloaded minutes; per-character APIs do not. One hour of audio runs from $0.31 to $40 depending on which you pick.
6 min read, 6 min listen
Build guides
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
Build guides
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
Build guides
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, 8 min listen
Product updates
simba-3.2 is Speechify's streaming-native English TTS model, and GET /v1/audio/models lets you discover models at runtime instead of hardcoding a list. Since 21 October 2026 the recommended model is simba-3.5. What shipped, which voices 3.2 serves, and how to move.
8 min read, 7 min listen
Build guides
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
Build guides
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.
8 min read, 6 min listen
Build guides
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
Build guides
Use SSML pauses, speaking rate, and pronunciation aliases to shape Speechify TTS output from one API request, and know which tags current models apply.
7 min read, 6 min listen
Benchmarks & pricing
On the Artificial Analysis Speech Arena on 13 October 2026, Simba 3.2 scored 1,244 and was the lowest-priced model in the top ten, at $6.60 per million characters against $11 for the next. How the board's Elo works, and two independent latency readings.
3 min read, 4 min listen
Build guides
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
Build guides
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
Build guides
Clone a voice from a short sample and use it to narrate dynamic video content programmatically via the REST API.
9 min read, 7 min listen
Build guides
Use the Speechify API's word-level timestamps to generate accurate WebVTT captions for your synthesized audio.
7 min read, 5 min listen
Build guides
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
Build guides
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
Global Privacy Control honored. Your browser sent a Global Privacy Control signal, so we have opted you out of the sale and sharing of your personal information and switched off analytics and marketing cookies.