Luke Oliff.

Archive.

Posts originally published elsewhere, collected here with their canonical source.

108 posts

2026
Simba 3.0 now supports cloned and personal voicessimba-3.0 accepts cloned and personal voice_id values self-serve on POST /v1/audio/speech and /v1/audio/stream, the same way simba-english does; simba-3.2 cloning still requires manual approval.TTSvia speechify.ai
Streaming TTS directly to the browser with Web Audio APIStream 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.Typescriptvia speechify.ai
Add a better voice to Deepgram's Voice Agent with SpeechifyPoint 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.Deepgramvia speechify.ai
Controlling Emotion and Timing in TTS with SSMLUse SSML emotion tags, pauses, prosody, emphasis, and pronunciation aliases to shape Speechify TTS output from one API request.SSMLvia speechify.ai
Cloned voices can now run on Simba 3.2 with Speechify approvalPersonal cloned voices can now be synthesized on the curated Simba 3.2 model. Given the model's quality bar, each clone is gated on manual Speechify approval of the voice key, while simba-english and simba-multilingual keep serving clones self-serve.TTSvia speechify.ai
List available TTS models at runtime with GET /v1/audio/modelsA new GET /v1/audio/models endpoint returns the models you can pass as the model parameter, each with a default and recommended flag plus the languages it supports — so a model picker can be built at runtime instead of hardcoding the list.TTSvia speechify.ai
Simba 3.2 is live on the TTS API as the recommended English modelSimba 3.2 is now available on POST /v1/audio/speech and /v1/audio/stream — a streaming-native Simba 3 model with lower TTFB, richer expressivity, and a curated voice allow-list, recommended for new English integrations.TTSvia speechify.ai
WE'RE NUMBER ONESimba 3.2 is #1 on Artificial Analysis, the independent TTS benchmark. On Voice Arena's blind, listener-voted board it's the #1 real-time voice and #1 on price — the model above it isn't real-time, the nearest at its quality costs 7x more. Nothing you can ship beats it.Simbavia speechify.ai
Building an automated audiobook pipeline with the Speechify TTS APITurn 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.TTSvia speechify.ai
API keys can now enforce monthly USD spend limitsSpeechify API keys can now carry a monthly USD spend limit, returning 402 spend_cap_exceeded once a key reaches its budget for the calendar month.Spend Limitsvia speechify.ai