# Anthropic Python SDK v1.4.0

- Product: Anthropic Python SDK (https://whatsnew.fyi/product/anthropic-sdk-python)
- Vendor: Anthropic
- Date: 2026-09-04
- Version: v1.4.0
- Original notes: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v1.4.0
- Permalink: https://whatsnew.fyi/product/anthropic-sdk-python/releases/v1.4.0

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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- **added** — Add Claude Tag category and user breakdowns to usage reports
- **added** — Add named types for organization compliance settings state
- **added** — Add support for sending a workspace ID on more endpoints
- **fixed** — Raise a clear error when an httpx object is passed instead of an httpx2 one
- **fixed** — Repair custom-code merge in messages resources

##### 1.4.0 (2026-09-04)

Full Changelog: [v1.3.0...v1.4.0](https://github.com/anthropics/anthropic-sdk-python/compare/v1.3.0...v1.4.0)

###### Features

* **api:** add Claude Tag category and user breakdowns to usage reports ([9fce1e4](https://github.com/anthropics/anthropic-sdk-python/commit/9fce1e4994e113c35f4a7116d0c5eb90367b9c66))
* **api:** add named types for organization compliance settings state ([1de1957](https://github.com/anthropics/anthropic-sdk-python/commit/1de1957334e7491979ddb21a1d673fa4e56d5459))
* **api:** add support for sending a workspace ID on more endpoints ([d1d2c01](https://github.com/anthropics/anthropic-sdk-python/commit/d1d2c01d8aa128080dea3d711e12cb3df95a2149))


###### Bug Fixes

* **client:** raise a clear error when an httpx object is passed instead of an httpx2 one ([9447099](https://github.com/anthropics/anthropic-sdk-python/commit/94470992f0f00ed331f2faa585cfda2cb8412a08))
* repair custom-code merge in messages resources ([#580](https://github.com/anthropics/anthropic-sdk-python/issues/580)) ([85454ca](https://github.com/anthropics/anthropic-sdk-python/commit/85454cab9a323801b76500707b84c1992c1c0ee4))


###### Chores

* **examples:** refresh platform model IDs ([#499](https://github.com/anthropics/anthropic-sdk-python/issues/499)) ([182abb5](https://github.com/anthropics/anthropic-sdk-python/commit/182abb51cdb5dda815b0b2498dc4adaab6dde469))
* **internal:** bundle the mock server spec and update dev tooling ([f9b0cf2](https://github.com/anthropics/anthropic-sdk-python/commit/f9b0cf281932512e6b40cd1a887a44542c883468))
* **internal:** clean up code comments ([#578](https://github.com/anthropics/anthropic-sdk-python/issues/578)) ([d202327](https://github.com/anthropics/anthropic-sdk-python/commit/d2023274f69dd0609ddabbf8f6af08041f868d8b))
* **internal:** fix mypy unreachable error in detect-breaking-changes script ([07834f6](https://github.com/anthropics/anthropic-sdk-python/commit/07834f601fb4a81958f15e2129ca091cb9d1c646))
* **internal:** narrower codeowners scope ([daca8f1](https://github.com/anthropics/anthropic-sdk-python/commit/daca8f13032311676ed30a6e0527ee304e1419c9))
* **internal:** revert codeowners change ([41aa767](https://github.com/anthropics/anthropic-sdk-python/commit/41aa767464881bb51937f42fe9c426ae3081fd9f))
* **tests:** remove stale warning filters ([ba9bf35](https://github.com/anthropics/anthropic-sdk-python/commit/ba9bf356ed60fa2eb206e266c86c0202dd005616))
* **tests:** reword the skip reason on the path-level query param tests ([6b5046a](https://github.com/anthropics/anthropic-sdk-python/commit/6b5046ad29999ec887226aecff67db9feb2d1972))


###### Documentation

* **api:** update a few doc strings ([26c509d](https://github.com/anthropics/anthropic-sdk-python/commit/26c509d66192f2b40150b481fa89da97e532612c))