# Anthropic TypeScript SDK v0.89.0 — sdk: v0.89.0

- Product: Anthropic TypeScript SDK (https://whatsnew.fyi/product/anthropic-sdk-typescript)
- Vendor: Anthropic
- Date: 2026-04-14
- Version: v0.89.0
- Original notes: https://github.com/anthropics/anthropic-sdk-typescript/releases/tag/sdk-v0.89.0
- Permalink: https://whatsnew.fyi/product/anthropic-sdk-typescript/releases/v0.89.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **deprecated** — Mark Sonnet and Opus 4 as deprecated
- **fixed** — Add missing events to streaming

##### 0.89.0 (2026-04-14)

Full Changelog: [sdk-v0.88.0...sdk-v0.89.0](https://github.com/anthropics/anthropic-sdk-typescript/compare/sdk-v0.88.0...sdk-v0.89.0)

###### Features

* **api:** manual updates ([57c2a11](https://github.com/anthropics/anthropic-sdk-typescript/commit/57c2a11c61ef9dfdad49a3ab91c4c567d13d1f73))
* **api:** mark Sonnet and Opus 4 as deprecated ([eff41b7](https://github.com/anthropics/anthropic-sdk-typescript/commit/eff41b717f16435167e53c5227774ef5bf079523))


###### Bug Fixes

* **streaming:** add missing events ([4c52919](https://github.com/anthropics/anthropic-sdk-typescript/commit/4c52919187d17c15d53b08d818d7dd9a5728267e))