release: 1.64.0

Author: stainless-app[bot]

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "1.63.1"
+  ".": "1.64.0"
 }

CHANGELOG.md

@@ -1,5 +1,24 @@
 # Changelog
 
+## 1.64.0 (2026-08-17)
+
+Full Changelog: [v1.63.1...v1.64.0](https://github.com/anthropics/anthropic-sdk-go/compare/v1.63.1...v1.64.0)
+
+### Features
+
+* **api:** additions to files and memory stores ([5c105da](https://github.com/anthropics/anthropic-sdk-go/commit/5c105daf4a37f0731775cbd7ec273d54b743ad40))
+
+
+### Bug Fixes
+
+* **api:** remove unsupported mid_conv_system content block ([bced0f9](https://github.com/anthropics/anthropic-sdk-go/commit/bced0f9ac92c24943141bb3b12c93b3bd4f6416e))
+* **tool-runner:** forward the server-assigned container on follow-up requests ([#277](https://github.com/anthropics/anthropic-sdk-go/issues/277)) ([860620c](https://github.com/anthropics/anthropic-sdk-go/commit/860620c47a6a38bb6156321e29faa9fd4462c0b1))
+
+
+### Chores
+
+* **internal:** remove leftover prism references ([a1d9eab](https://github.com/anthropics/anthropic-sdk-go/commit/a1d9eabf77975e8242f5b7623e202abae7547fe5))
+
 ## 1.63.1 (2026-08-13)
 
 Full Changelog: [v1.63.0...v1.63.1](https://github.com/anthropics/anthropic-sdk-go/compare/v1.63.0...v1.63.1)

README.md

@@ -29,7 +29,7 @@ Or explicitly add the dependency:
 <!-- x-release-please-start-version -->
 
 ```sh
-go get -u 'github.com/anthropics/anthropic-sdk-go@v1.63.1'
+go get -u 'github.com/anthropics/anthropic-sdk-go@v1.64.0'
 ```
 
 <!-- x-release-please-end -->

internal/version.go

@@ -2,4 +2,4 @@
 
 package internal
 
-const PackageVersion = "1.63.1" // x-release-please-version
+const PackageVersion = "1.64.0" // x-release-please-version