Archive.
Posts originally published elsewhere, collected here with their canonical source.
108 posts
2026
Voice agents can now switch language mid-callMultilingual voice agents now switch language mid-call: one agent, one session, no transfer and no dropped context - just set additional_languages.AIvia speechify.ai
Simba 3.2 is our recommended TTS model: what changed and how to migratesimba-3.2 is now the recommended Speechify TTS model, and GET /v1/audio/models lets you discover it at runtime instead of hardcoding a model list.Newsvia speechify.ai
Agent test runs get clear 402 errors on balance and plan tier checksAll four agent test-run endpoints now document 402 for a depleted balance or an exhausted spend limit, the single-run path finally takes the admission gate itsAIvia speechify.ai
Best TTS Providers 2026: Comparison of the Top 10 APIsThe best TTS providers of 2026, ranked: ten text-to-speech APIs compared on the independent Artificial Analysis Speech Arena for voice quality and price.Text-to-Speechvia speechify.ai
Streaming TTS now carries word-level speech marksA new streaming endpoint interleaves word-level timestamps with the audio, so captions and text highlighting no longer have to wait on the non-streamed API.Text-to-Speechvia speechify.ai
Simba 3.0 now speaks six European languages; Simba 1.6 marked legacySimba 3.0 now speaks six European languages, and the Simba 1.6 models are flagged legacy by a new deprecated flag on the model catalog endpoint.Text-to-Speechvia speechify.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.AIvia speechify.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 clonedText-to-Speechvia speechify.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, andAPIsvia speechify.ai
Building an AI Voice Cloning Web App with Next.js and SpeechifyBuild an AI voice cloning web app in Next.js: clone a voice from a browser upload, synthesize speech with it, and keep your API key server-side.Voice Cloningvia speechify.ai