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Official documentation

Speech to Text API reference (IBM Cloud)

IBM, 2026

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Read on October 17, 2026

What it is
IBM Cloud's API reference for Watson Speech to Text. It lists the endpoints, including POST /v1/recognize, and notes the removal of previous-generation models.
How much weight it carries
Official documentation for the product. It is the reference the API uses, so it is more reliable than third-party tutorials, but the page is long and the model notes are dated.
Speech to Text API reference (IBM Cloud) | Yap