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Self-hosted LangSmith is an add-on to the Enterprise plan designed for our largest, most security-conscious customers. For more details, refer to Pricing. Contact our sales team if you want to get a license key to trial LangSmith in your environment.
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2026-01-09

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langsmith-0.12.36

  • Added support for custom MCP servers with OAuth in Agent Builder
  • Added ability to view and edit memory files in Agent Builder
  • Added support for attachments in the frontend
  • Improved streaming tree performance in trace viewer
  • Fixed scroll behavior in trace tree
  • Fixed unicode truncation issues in trace display
  • Fixed onboarding screen showing incorrectly when runs exist
  • Increased maximum automation rules per workspace to 200
Download the Helm chart: langsmith-0.12.36.tgz
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2026-01-08

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langsmith-0.12.35

  • Added per-bar highlighting for feedback charts in experiments
  • Added Agent Builder activity feed
  • Changed experiment chip to hover card for better usability
  • Fixed agents appearing in random sidebar positions
  • Fixed tool modal nesting issue in playground
  • Fixed diff mode fallback on comparison page
  • Fixed race condition in OAuth authentication requests
  • Added new Granular Usage tab for reporting billable usage by workspace, project, user, and API key (enable with DEFAULT_ORG_FEATURE_ENABLE_GRANULAR_USAGE_REPORTING=true and GRANULAR_USAGE_TABLE_ENABLED=true environment variables in commonEnv)
Download the Helm chart: langsmith-0.12.35.tgz
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2026-12-26

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langsmith-0.12.34

  • Added Redis IAM authentication support for GCP and Azure
  • Added self-serve audit logs in OCSF format
  • Added hide column option to experiment outputs header
  • Added message_user tool to the tool server
  • Improved trace tree loading speed
  • Allowed basic auth installations to disable invites via API
  • Fixed tenant ID handling in navigation
  • Fixed scrolling in Agent Builder templates view
  • Fixed Gmail account connection limit tooltip
  • Fixed user view preference persistence on page load
  • Fixed tab wrapping in UI
  • Made feedback charts visible by default
  • Made SCIM group name matching case-insensitive
Download the Helm chart: langsmith-0.12.34.tgz
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2025-12-20

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langsmith-0.12.33

  • Security fix: fixed Studio vulnerability to malicious baseUrl param by requiring user-defined allowed origins
  • Allow enabling invites alongside JIT provisioning for SSO (OAuth with Client Secret mode only)
  • Added self-serve audit logs for administrative actions (Private Preview)
Download the Helm chart: langsmith-0.12.33.tgz
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2025-12-12

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langsmith-0.12.32

  • Added IAM connection support for PostgreSQL (AWS only).
  • Added GPT-5.2 model support to the playground.
  • Added support for setting memory limits on executor pods.
Download the Helm chart: langsmith-0.12.32.tgz
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2025-12-11

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langsmith-0.12.31

  • Improved error messages for basic authentication misconfiguration.
  • Added organization operator role support.
  • Fixed issues with streaming datasets endpoint.
Download the Helm chart: langsmith-0.12.31.tgz
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2025-12-09

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langsmith-0.12.30

  • Fixed API Docs button not redirecting to the correct URL when using a sub path.
  • Performance improvements and bug fixes.
Download the Helm chart: langsmith-0.12.30.tgz
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2025-12-08

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langsmith-0.12.29

  • Added mTLS (mutual TLS) support for ClickHouse connections to enhance security for database communication.
Download the Helm chart: langsmith-0.12.29.tgz
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2025-12-05

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langsmith-0.12.28

  • Added mTLS (mutual TLS) support for PostgreSQL connections to enhance security for database communication.
  • Added mTLS support for ClickHouse clients.
  • Fixed Agent Builder onboarding and side navigation visibility when disabled in self-hosted deployments.
Download the Helm chart: langsmith-0.12.28.tgz
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2025-12-04

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langsmith-0.12.27

  • Added mTLS (mutual TLS) support for Redis connections to enhance security.
  • Added support for empty trigger server configuration in self-hosted deployments.
  • Improved incident banner styling and content.
Download the Helm chart: langsmith-0.12.27.tgz
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2025-12-01

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langsmith-0.12.25

  • Enabled Agent Builder UI feature flag for self-hosted deployments.
  • Added Redis Cluster support for improved scalability and high availability.
Download the Helm chart: langsmith-0.12.25.tgz
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2025-11-27

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langsmith-0.12.24

  • Added dequeue timeouts to all SAQ (Simple Async Queue) queues to improve reliability.
  • Performance improvements and bug fixes.
Download the Helm chart: langsmith-0.12.24.tgz
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2025-11-26

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langsmith-0.12.22

  • Added Claude Opus 4.5 model support to the playground.
  • Updated dataplane operator version.
  • Added LANGCHAIN_ENDPOINT environment variable when basePath is configured.
Download the Helm chart: langsmith-0.12.22.tgz
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2025-11-26

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langsmith-0.12.21

  • Added explicit revisionHistoryLimit configuration for operator deployment template.
Download the Helm chart: langsmith-0.12.21.tgz
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2025-11-24

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langsmith-0.12.20

  • Added support for self-hosted customers to opt into the pairwise annotation queue feature.
  • Updated operator to version 0.1.21 in LangSmith and data plane charts.
Download the Helm chart: langsmith-0.12.20.tgz
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2025-11-24

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langsmith-0.12.19

  • Fixed playground environment configuration to use correct default settings.
Download the Helm chart: langsmith-0.12.19.tgz
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2025-11-20

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langsmith-0.12.18

  • Internal updates and maintenance.
Download the Helm chart: langsmith-0.12.18.tgz
Additional Helm chart releases are available in the langchain-ai/helm GitHub repository.
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