Independent benchmarks and pricing, build guides, product updates and company news from SpeechifyAI. Per-release detail lives in the docs changelog.https://speechify.ai/en-ushttps://speechify.ai/blog/simba-3-5/https://speechify.ai/blog/simba-3-5/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.Wed, 21 Oct 2026 00:00:00 GMTSpeechifyAI teamProduct updatessimba-3.5ttsmultilingualmodelshttps://speechify.ai/blog/tts-api-per-user-rate-limits-safety-identifier/https://speechify.ai/blog/tts-api-per-user-rate-limits-safety-identifier/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.Thu, 15 Oct 2026 00:00:00 GMTSpeechifyAI teamBuild guidesttsrate-limitssafetymulti-tenantapi-designhttps://speechify.ai/blog/websocket-tts-streaming-for-voice-agents/https://speechify.ai/blog/websocket-tts-streaming-for-voice-agents/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.Fri, 09 Oct 2026 00:00:00 GMTSpeechifyAI teamBuild guideswebsocketstreamingvoice-agentslatencyllmttshttps://speechify.ai/blog/tts-api-concurrency-and-rate-limits-2026/https://speechify.ai/blog/tts-api-concurrency-and-rate-limits-2026/On 1 October 2026, SpeechifyAI's $10 Starter plan allowed 15 concurrent text-to-speech requests and its $99 Pro plan 30. Concurrency and rate limits for 14 text-to-speech APIs, plan by plan, read from each provider's own pages that day.Thu, 01 Oct 2026 00:00:00 GMTSpeechifyAI teamBenchmarks & pricingttsconcurrencyrate-limitscomparisoninfrastructurestreaminghttps://speechify.ai/blog/livekit-voice-agent-with-speechify-tts/https://speechify.ai/blog/livekit-voice-agent-with-speechify-tts/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.Mon, 28 Sep 2026 00:00:00 GMTSpeechifyAI teamBuild guideslivekitvoice-agentspythonnodejsttslatencystreaminghttps://speechify.ai/blog/choosing-a-low-latency-tts-api-2026/https://speechify.ai/blog/choosing-a-low-latency-tts-api-2026/In our own round on 9 October 2026, Simba 3.2 reached first audible audio in a median of 47 ms from US East, the lowest of the 13 streaming endpoints we timed. What to measure before you pick a TTS API for a voice agent, and what cuts the wait.Fri, 25 Sep 2026 00:00:00 GMTSpeechifyAI teamBenchmarks & pricinglatencystreamingvoice-agentsbenchmarkcovalvoice-arenattshttps://speechify.ai/blog/simba-3-2-first-audio-latency-coval/https://speechify.ai/blog/simba-3-2-first-audio-latency-coval/Coval's independent benchmark measured Simba 3.2's median time to first audio at 379 ms on 13 September 2026 and 106 ms on 24 September, with the same model. What changed, why Coval counts leading silence, and how to reproduce it.Thu, 24 Sep 2026 00:00:00 GMTSpeechifyAI teamBenchmarks & pricinglatencybenchmarkcovalsimbastreamingvoice-arenahttps://speechify.ai/blog/tts-api-pricing-at-volume-2026/https://speechify.ai/blog/tts-api-pricing-at-volume-2026/Monthly cost of 13 text-to-speech APIs at 1M, 10M and 100M characters, subscription fees included, read from each vendor's pricing page on 28 September 2026, next to each model's blind-listening score.Wed, 23 Sep 2026 00:00:00 GMTSpeechifyAI teamBenchmarks & pricingttspricingcomparisoncostartificial-analysishttps://speechify.ai/blog/speechify-cli-launch/https://speechify.ai/blog/speechify-cli-launch/There's now a command line for Speechify. Install it from npm, log in with your API key, and synthesize speech, browse voices, and hand Speechify to your AI agent, all from your terminal.Fri, 11 Sep 2026 00:00:00 GMTSpeechifyAI teamProduct updatesclittsdeveloper-toolsmcphttps://speechify.ai/blog/word-level-timestamps-in-a-livekit-voice-agent-with-speechify/https://speechify.ai/blog/word-level-timestamps-in-a-livekit-voice-agent-with-speechify/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.Wed, 09 Sep 2026 00:00:00 GMTSpeechifyAI teamBuild guideslivekitvoice-agentspythonttscaptionshttps://speechify.ai/blog/add-read-aloud-to-docs/https://speechify.ai/blog/add-read-aloud-to-docs/Add a listen button to documentation with the Speechify API. A framework-agnostic walkthrough with a concrete example you can copy.Mon, 07 Sep 2026 00:00:00 GMTSpeechifyAI teamBuild guidesdocumentationttsread-aloudjavascripttutorialhttps://speechify.ai/blog/build-with-streaming-text-to-speech/https://speechify.ai/blog/build-with-streaming-text-to-speech/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.Fri, 04 Sep 2026 00:00:00 GMTSpeechifyAI teamBuild guidesstreamingttsspeech-marksvoice-agentsreal-timehttps://speechify.ai/blog/rss-feed-daily-audio-digest/https://speechify.ai/blog/rss-feed-daily-audio-digest/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.Wed, 02 Sep 2026 00:00:00 GMTSpeechifyAI teamBuild guidesrssttsautomationnodejstutorialhttps://speechify.ai/blog/slack-bot-reads-aloud/https://speechify.ai/blog/slack-bot-reads-aloud/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.Mon, 31 Aug 2026 00:00:00 GMTSpeechifyAI teamBuild guidesslackttsbotnodejstutorialhttps://speechify.ai/blog/turn-any-webpage-into-an-audiobook-with-the-speechify-api/https://speechify.ai/blog/turn-any-webpage-into-an-audiobook-with-the-speechify-api/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.Mon, 24 Aug 2026 00:00:00 GMTSpeechifyAI teamBuild guidesttswebnodejspipelineapihttps://speechify.ai/blog/elections/https://speechify.ai/blog/elections/The safeguards SpeechifyAI operates to prevent synthetic voices being used for election misinformation, and the commitments behind them.Thu, 13 Aug 2026 00:00:00 GMTSpeechifyAI teamCompanyvoice-cloningsafetyelectionspolicyhttps://speechify.ai/blog/adding-text-to-speech-to-web-and-mobile-apps/https://speechify.ai/blog/adding-text-to-speech-to-web-and-mobile-apps/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.Thu, 06 Aug 2026 00:00:00 GMTSpeechifyAI teamBuild guidesttsapijavascriptmobilestreamingtutorialweb-speech-apihttps://speechify.ai/blog/generating-audio-content-at-scale-2026/https://speechify.ai/blog/generating-audio-content-at-scale-2026/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.Thu, 06 Aug 2026 00:00:00 GMTSpeechifyAI teamBenchmarks & pricingttscomparisonpricingaudiobooksnarrationelevenlabsapihttps://speechify.ai/blog/text-to-speech-for-customer-support-chatbots/https://speechify.ai/blog/text-to-speech-for-customer-support-chatbots/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.Thu, 06 Aug 2026 00:00:00 GMTSpeechifyAI teamBuild guidesvoice-agentsttscustomer-supportcomparisondeepgramelevenlabslatencyhttps://speechify.ai/blog/multilingual-voiceover-with-speechify-and-simba-3-0/https://speechify.ai/blog/multilingual-voiceover-with-speechify-and-simba-3-0/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.Wed, 29 Jul 2026 00:00:00 GMTSpeechifyAI teamBuild guidesttsmultilingualsimba-3.0nextjshttps://speechify.ai/blog/speech-generation-in-the-vercel-ai-sdk-with-speechify/https://speechify.ai/blog/speech-generation-in-the-vercel-ai-sdk-with-speechify/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.Mon, 27 Jul 2026 00:00:00 GMTSpeechifyAI teamBuild guidesnextjsvercelai-sdktypescriptttshttps://speechify.ai/blog/simba-3-2-and-the-models-endpoint/https://speechify.ai/blog/simba-3-2-and-the-models-endpoint/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.Fri, 24 Jul 2026 00:00:00 GMTLuke OliffProduct updatessimba-3.2simba-3.5ttsstreaminghttps://speechify.ai/blog/best-tts-providers-2026-comparison/https://speechify.ai/blog/best-tts-providers-2026-comparison/Simba 3.2 for voice agents and narration at volume: 47 ms to first audible audio from US East on 9 October 2026, and $10 per 1M characters, $6 on Scale. Simba 3.5 (21 October 2026) speaks 48 languages with every catalog voice.Thu, 23 Jul 2026 00:00:00 GMTSpeechifyAI teamBenchmarks & pricingttscomparisonartificial-analysisbenchmarkspricingvoice-agentssimbadeepgramhttps://speechify.ai/blog/building-an-ai-voice-cloning-web-app-with-nextjs-and-speechify/https://speechify.ai/blog/building-an-ai-voice-cloning-web-app-with-nextjs-and-speechify/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.Fri, 17 Jul 2026 00:00:00 GMTSpeechifyAI teamBuild guidesnextjsvoice-cloningtypescripthttps://speechify.ai/blog/streaming-tts-to-the-browser-with-web-audio-api/https://speechify.ai/blog/streaming-tts-to-the-browser-with-web-audio-api/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.Wed, 15 Jul 2026 00:00:00 GMTSpeechifyAI teamBuild guidestypescriptstreamingbrowserwebaudiohttps://speechify.ai/blog/add-a-better-voice-to-deepgram-voice-agent-with-speechify/https://speechify.ai/blog/add-a-better-voice-to-deepgram-voice-agent-with-speechify/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.Tue, 14 Jul 2026 00:00:00 GMTSpeechifyAI teamBuild guidesdeepgramvoice-agentsgobyochttps://speechify.ai/blog/controlling-emotion-and-timing-in-tts-with-ssml/https://speechify.ai/blog/controlling-emotion-and-timing-in-tts-with-ssml/Use SSML pauses, speaking rate, and pronunciation aliases to shape Speechify TTS output from one API request, and know which tags current models apply.Mon, 13 Jul 2026 00:00:00 GMTSpeechifyAI teamBuild guidesssmlttsemotiontypescripthttps://speechify.ai/blog/artificial-analysis-tts-leaderboard-elo-explained/https://speechify.ai/blog/artificial-analysis-tts-leaderboard-elo-explained/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.Mon, 06 Jul 2026 00:00:00 GMTSpeechifyAI teamBenchmarks & pricingsimbaartificial-analysisvoice-arenabenchmarksttspricinglatencyhttps://speechify.ai/blog/building-an-automated-audiobook-pipeline-with-the-speechify-tts-api/https://speechify.ai/blog/building-an-automated-audiobook-pipeline-with-the-speechify-tts-api/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.Fri, 03 Jul 2026 00:00:00 GMTSpeechifyAI teamBuild guidesttsaudiobookspythonpipelinehttps://speechify.ai/blog/speechify-speech-sdk-provider/https://speechify.ai/blog/speechify-speech-sdk-provider/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.Thu, 02 Jul 2026 00:00:00 GMTSpeechifyAI teamBuild guidesspeech-sdktext-to-speechintegrationshttps://speechify.ai/blog/dynamic-video-narration-using-the-speechify-voice-cloning-api/https://speechify.ai/blog/dynamic-video-narration-using-the-speechify-voice-cloning-api/Clone a voice from a short sample and use it to narrate dynamic video content programmatically via the REST API.Wed, 01 Jul 2026 00:00:00 GMTSpeechifyAI teamBuild guidesvoice-cloningvideorest-apitypescripthttps://speechify.ai/blog/building-real-time-captions-with-speechify-tts-speech-marks/https://speechify.ai/blog/building-real-time-captions-with-speechify-tts-speech-marks/Use the Speechify API's word-level timestamps to generate accurate WebVTT captions for your synthesized audio.Mon, 29 Jun 2026 00:00:00 GMTSpeechifyAI teamBuild guidesspeech-markscaptionsaccessibilitywebvtthttps://speechify.ai/blog/streaming-tts-in-python-with-speechify/https://speechify.ai/blog/streaming-tts-in-python-with-speechify/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.Sat, 27 Jun 2026 00:00:00 GMTSpeechifyAI teamBuild guidesttspythonstreamingdeveloper-experiencehttps://speechify.ai/blog/using-tts-in-nodejs-with-speechify/https://speechify.ai/blog/using-tts-in-nodejs-with-speechify/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.Wed, 24 Jun 2026 00:00:00 GMTSpeechifyAI teamBuild guidesttsnodejstypescriptdeveloper-experience