---
name: LangSmith
slug: langsmith
organization_slug: langchain
category: observability
source_count: 2
canonical: https://releases.sh/langchain/langsmith
---

# LangSmith

## Sources (2)

- [LangChain Changelog](https://releases.sh/langchain/langchain-changelog) — `scrape`
- [LangSmith SDK](https://releases.sh/langchain/langsmith-sdk) — `github`

## Recent Releases

_Summaries below — fetch the release's `canonical` URL for full content, or `url` for the original source._

<Release source="langsmith-sdk" version="v0.9.1" date="June 23, 2026" published="2026-06-23T17:04:04.000Z" url="https://github.com/langchain-ai/langsmith-sdk/releases/tag/v0.9.1" canonical="https://releases.sh/release/rel_yoeSa0PEBdViFtFNTx31m" truncated="true">
Creating feedback now supports an opt-out setting for trace retention. Also fixed missing runtime dependencies for the OpenAPI client.
</Release>

<Release source="langsmith-sdk" version="v0.9.0" date="June 22, 2026" published="2026-06-22T15:36:59.000Z" url="https://github.com/langchain-ai/langsmith-sdk/releases/tag/v0.9.0" canonical="https://releases.sh/release/rel_pNxY0nmXZD36kTtXQ26l2" truncated="true">
Sandbox mounts now support a mount_config parameter, and a curated secret-detection anonymizer preset (createSecretAnonymizer) is available. Python SDK also allows-list fields accepted from baggage replica updates.
</Release>

<Release source="langsmith-sdk" version="v0.8.18" date="June 19, 2026" published="2026-06-19T13:12:04.000Z" url="https://github.com/langchain-ai/langsmith-sdk/releases/tag/v0.8.18" canonical="https://releases.sh/release/rel__Btmf2WQw845PBk0BRBRh" truncated="true">
## What's Changed
* chore(deps-dev): bump vitest from 3.2.4 to 3.2.6 in /js by @dependabot[bot] in https://github.com/langchain-ai/langsmith-sdk/pull/...
</Release>

<Release source="langsmith-sdk" version="v0.8.17" date="June 18, 2026" published="2026-06-18T20:56:04.000Z" url="https://github.com/langchain-ai/langsmith-sdk/releases/tag/v0.8.17" canonical="https://releases.sh/release/rel_W7KhL0wn_3_kEvvcJgcZR" truncated="true">
Python online evals now support async execution, sandbox mount support is added to both JS and Python SDKs along with Git mount helpers, and the client warns when the backend version is below the minimum required. SDK report links now use the insights tab.
</Release>

<Release source="langsmith-sdk" version="v0.8.16" date="June 15, 2026" published="2026-06-15T17:40:48.000Z" url="https://github.com/langchain-ai/langsmith-sdk/releases/tag/v0.8.16" canonical="https://releases.sh/release/rel_l-_-sHi3c6Ns9tjTb750h" truncated="true">
Sync/async conversion for Sandbox and SandboxClient has been added. Also fixed experiment keys from wrapped evaluator functions and derived create_child run id from start_time.
</Release>

<Release source="langsmith-sdk" version="v0.8.15" date="June 12, 2026" published="2026-06-12T03:02:42.000Z" url="https://github.com/langchain-ai/langsmith-sdk/releases/tag/v0.8.15" canonical="https://releases.sh/release/rel_rnXCCwqOqiJfXa2Obw5dY" truncated="true">
## What's Changed
* chore(js): exclude generated _openapi_client from linters and type-checker by @KiewanVillatel in https://github.com/langchain-ai/l...
</Release>

<Release source="langsmith-sdk" version="v0.8.14" date="June 10, 2026" published="2026-06-10T19:54:53.000Z" url="https://github.com/langchain-ai/langsmith-sdk/releases/tag/v0.8.14" canonical="https://releases.sh/release/rel_UG3uOLUwfBh5jGtvXU7E3" truncated="true">
Added compatibility smoke tests for Deepagent to the Python and JS CI environments.
</Release>

<Release source="langsmith-sdk" version="v0.8.13" date="June 10, 2026" published="2026-06-10T17:41:25.000Z" url="https://github.com/langchain-ai/langsmith-sdk/releases/tag/v0.8.13" canonical="https://releases.sh/release/rel_MiHWqLVlNhLSl0fD9_W12" truncated="true">
Types sandbox startup errors.
</Release>

<Release source="langsmith-sdk" version="v0.8.12" date="June 10, 2026" published="2026-06-10T14:29:34.000Z" url="https://github.com/langchain-ai/langsmith-sdk/releases/tag/v0.8.12" canonical="https://releases.sh/release/rel_-4cxA5BDe5Gbpc2LQjSLu" truncated="true">
Fixed Gemini double counting of over 200k tokens. Added cross-process OAuth refresh filesystem lock for both Python and JavaScript SDKs. Avoids duplicate /v1 in hub URLs when endpoint includes /api/v1.
</Release>

<Release source="langsmith-sdk" version="v0.8.11" date="June 8, 2026" published="2026-06-08T22:54:30.000Z" url="https://github.com/langchain-ai/langsmith-sdk/releases/tag/v0.8.11" canonical="https://releases.sh/release/rel_vhloEz1NPCKRTLViLtmdR" truncated="true">
Fixed async feedback client to match the behavior of the sync feedback client.
</Release>

**Tags:** `evaluation`, `llm`, `tracing`