feat(examples): add Cartesia Sonic 3.5 and Ink demo#16839
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Introduce @ai-sdk/cartesia with batch speech and transcription support, docs, examples, and model table updates following the ElevenLabs audio provider pattern. Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
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…rlton/demo-cartesia-tts # Conflicts: # .changeset/bright-dolphins-speak.md # content/providers/01-ai-sdk-providers/95-cartesia.mdx
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## Summary - Add the `@ai-sdk/cartesia` provider with Sonic 3.5 speech generation, Ink-Whisper batch transcription, and Ink 2 realtime transcription. - Map AI SDK speech and transcription options to the Cartesia 2026-03-01 API with validated formats, provider options, and structured errors. - Add browser-safe raw string/binary realtime transport, short-lived Cartesia STT token creation, automatic turn detection, manual finalization, normalized transcription events, documentation, package metadata, and a release changeset. Ink 2 uses Cartesia’s streaming WebSocket API; the batch `/stt` API remains correctly scoped to the Ink-Whisper family. ## Test plan - [x] Cartesia package Node and Edge tests (32 passing in each environment) - [x] Cartesia package type-check and build - [x] AI realtime browser transport tests (5 passing) and type-check - [x] Repository-wide format/lint and provider consistency checks - [ ] Live TTS/STT smoke test with a working `CARTESIA_API_KEY` using the stacked demo in #16839 --------- Co-authored-by: Cursor <cursoragent@cursor.com> Co-authored-by: Gregor Martynus <39992+gr2m@users.noreply.github.com>
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Summary
Draft demo (not for merge) — a minimal, self-contained browser app to try Cartesia through
@ai-sdk/cartesia.sonic-3.5is the default.cartesia.transcription('ink-whisper').cartesia.experimental_realtime('ink-2')as the separate streaming transcription path implemented in feat(provider/cartesia): add Sonic 3.5 and Ink support #16815..env.exampledocuments the required local variables and.envremains git-ignored.Stacks on #16815 (
@ai-sdk/cartesiaprovider).Run locally
cd examples/cartesia-tts-demo cp .env.example .env pnpm startTest plan
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