Best TTS Providers 2026: Comparison of the Top 10 APIsThe top 10 text-to-speech APIs of 2026, benchmarked on the independent Artificial Analysis Speech Arena. Simba 3.2 is tied for the best-rated voice at $6 to $10 per million characters, a fraction of Cartesia, Deepgram, and ElevenLabs. Self-hosted models left out.Voice AI
Simba 3.0 now speaks six European languages; Simba 1.6 marked legacySimba 3.0 is no longer English-only — it now officially covers English plus German, Spanish (ES/MX), French, Italian, and Brazilian Portuguese. The same release flags the Simba 1.6 models as legacy and confirms Simba 3.0 accepts cloned voices.Voice AI
Set a per-agent maximum call durationVoice agents now carry a max_call_duration_seconds field — a hard per-agent wall-clock cap on a single call. When a call reaches it, the agent ends automatically; null keeps the previous behavior of bounding calls only by your plan's ceiling.Voice AI
Filter GET /v1/voices by type, locale, gender, and modelGET /v1/voices now accepts type, locale, gender, and model query filters, applied before pagination so pages stay full — so you can fetch, say, only English cloned voices that support Simba 3.2 in a single call.Voice AI
Per-plan API rate and concurrency limits are now publishedThe API limits reference now lists per-plan rate limits (requests per second, plus an Agents burst) and concurrency limits for both the TTS and Agents surfaces, and 429 responses carry a docs_url plus distinct rate_limited and concurrency_limited error codes.Voice AI
Building an AI Voice Cloning Web App with Next.js and SpeechifyClone 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.Voice 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.Voice 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.Voice 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.Voice 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.Voice 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.Voice 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.Voice 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.Voice 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.Voice 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.Voice AI
Switch to Speechify from inside speech-sdkSpeechify is now a direct provider in speech-sdk. Switch existing calls over with a factory function and an API key, no new client required.Voice AI
TTS now accepts sample-rate and bitrate-specific output formatsSpeechify TTS speech and streaming endpoints now accept output_format values like pcm_16000, ulaw_8000, and bitrate-tuned mp3 variants without changing existing callers.Voice AI
The API now exposes more safety limits at the edgeSpeechify added rate-budget response headers, global JSON body-size handling, clearer 413 and 415 errors, and pre-auth IP throttling for token-mint paths.Voice AI
Dynamic video narration using the Speechify Voice Cloning APIClone a voice from a short sample and use it to narrate dynamic video content programmatically via the REST API.Voice AI
Workspace webhooks now have endpoint management and versioned payloadsSpeechify workspace webhooks now support managed endpoints, delivery history, a resource.action event catalog, combined signatures, and per-endpoint API versions.Voice AI
API keys now carry clearer scopes and usage attributionSpeechify API keys now have cleaner scope tiers, service-account inheritance, and usage attribution that makes spend easier to trace back to a workload.Voice AI
How we think about latency in SpeechifyAI voice agentsBaseten published a case study on the SpeechifyAI voice agent stack. This is our view on why model co-location matters for live calls.Voice AI
Service accounts are now machine identities for the Speechify APIService accounts give Speechify API workloads their own identity, scope ceiling, key rotation flow, usage attribution, and short-lived child keys for agent sessions.Voice AI
Building real-time captions with Speechify TTS speech marksUse the Speechify API's word-level timestamps to generate accurate WebVTT captions for your synthesized audio.Voice AI
Build and Agents API fields moved toward one naming shapeBuild and Agents received a small API naming cleanup on June 28, including not_specified voice gender and several Agents field-name migrations.Voice AI
Streaming TTS in Python with SpeechifyHow to stream audio from the Speechify TTS API in Python using the SDK and native requests. Covers chunked streaming to disk and piping audio to a player without waiting for the full payload.Voice AI
GET /v1/voices now returns a pagination-ready envelopeThe Build API moved GET /v1/voices from a bare array to a voices object with pagination fields, making the response shape safer for SDKs and future growth.Voice AI
Idempotency-Key is now wired across side-effect API callsSpeechify now supports Idempotency-Key on the API calls most likely to be retried, including calls, batches, purchases, spend paths, and service-account key minting.Voice AI
Speechify-Version gives API clients a stable date pinSpeechify APIs now support the Speechify-Version header, so HTTP clients can pin a dated contract while SDKs send their build-date version automatically.Voice AI
Using TTS in Node.js with SpeechifyA 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.Voice AI
TTS stream responses are documented as raw audio streamsThe Build docs now spell out that POST /v1/audio/stream returns chunked raw audio, not JSON, with clearer response content types and codec notes.Voice AI
Agents now expose live operations APIs for analytics and interventionSpeechify Agents added live transcript streaming, take-over actions, per-action RBAC, analytics queries, and saved dashboard APIs for monitoring live voice operations.Voice AI
Launching the Speechify CookbookA small, public repo of runnable Speechify recipes. Pick a folder, drop in your API key, run it. TypeScript and Python today, SDK and native REST side by side.Voice AI
Hello Speechify DevelopersWelcome to the new Speechify developer blog. Expect updates from the AI and labs teams, product news, collaborations, and technical guides for the Speechify TTS API.Voice AI
Best Text-to-Speech API: Top Voice Quality at the Lowest Price (2026) | SpeechifySpeechify SIMBA 3.0 ranks #7 globally on Artificial Analysis — above ElevenLabs, Google, and OpenAI — from $6 per million characters. Compare top TTS APIs.Voice AI
Voice Agents API is now public betaSpeechify Voice Agents is now publicly documented, with guides and API reference pages for agents, conversations, tools, knowledge bases, calls, and monitoring.Voice AI