Changelog

Provision View-Only Seats Through SCIM and SAML

If your organization manages access through SCIM or SAML, you can now provision View-Only seats directly from your identity provider. Seat type and role are separate settings, so admins invite and assign View-Only or standard members without waiting on a full directory sync.

• Assign roles manually, independent of SCIM or SAML group mapping.
• Keep seat type and role in lockstep when provisioning through your identity provider.

Full or Flexible Pause Available for Annotators

Annotators can be paused two ways: a full or flexible pause.

• A full pause happens when a user is paused manually or by a behavior-based trigger. They lose access to the project entirely and can't annotate, review, comment, or edit their own existing annotations.
• A flexible pause happens when a user is paused by the Tasks Per Annotator Limit or Annotator Evaluation. They keep access to the project to work through rejected annotations but can't start any new annotation work.

Fixes and Improvements

• Stopped the skip hotkey from bypassing a project's "Allow skipping tasks" setting.
• Tightened permission checks on interface media links so uploads stay scoped to the correct project.

"Select Element" for Precise Edits with the Interfaces Agent

Building a custom Interface means describing edits in words: "the button in the top right," "the second field." You can now hover any element in the interface preview to see it outlined, then click it to add a direct reference to your chat with the AI agent. The agent uses that reference to target its edit precisely instead of guessing which element you meant.

Fixes and Improvements

• Improved output validations when switching Interface versions, including warnings about labels that no longer exist in the new version.
• Improved precision for Review Time metrics for projects using Interfaces.
• The Activity Log project filter loads and searches faster in organizations with many projects.

Start Document Projects with the Doclang Template

Label Studio now ships a DocLang Interface system template for document layout annotation. Draw layout regions for text, section headers, lists, tables, pictures, formulas, code, and key/value pairs, set reading order, run OCR in the browser, and preview the resulting DocLang XML as you work.

Check out the blog!

Talk to Your Interfaces Agent While You Build

The Interfaces agent chat now supports voice input and shows its work as it happens. Click the microphone next to the composer to dictate a request instead of typing it, and watch the agent's thinking, streaming responses, and tool activity render live as it builds your interface.

• Multi-select clarifying questions now show checkboxes instead of radio buttons, so you can tell at a glance which questions accept more than one answer.
• The Plan toggle now turns off automatically once you approve a plan, instead of staying on and implying the agent is still waiting for direction.

Assign an Interface Version to Multiple Projects at Once

You can now assign a published Interface version to many linked projects in a single action from the Interface overview's Projects tab. Roll out a new version across every project that uses it, or pin a batch of older projects to a known version, without switching each row one by one.

• Projects already on the target version are skipped, and the result tells you how many were switched versus already current.
• Only published versions appear as bulk targets, so you can't accidentally roll out a draft.

Fixes and Improvements

• Fixed a timeout in bulk task assignment under heavy concurrent annotation load
• Fixed YOLO exports with images so image assets are included when your source storage is Amazon S3, Google Cloud Storage, or Azure.
• Reduced load time on the Annotation Review tab for larger projects.

New Annotator Evaluation Features

You can now set up automated Annotator Evaluation based on Acceptance Score. This means you can evaluate annotators from review outcomes, which may be particularly useful in projects with no ground truth.

• Score annotators by how often their submitted annotations are accepted during review.
• Optionally, automatically pause annotators who do not meet required metric thresholds.
• See each annotator’s evaluation status and who is paused from the Dashboard > Members page.

Improved Data Manager Filters Pane

We've improved the UI of the Filters pane so filter controls are easier to read, manage, and update.

Easily Switch Interface Version Across Projects

The Projects tab from an Interface now supports selecting which Interface Version to use, so you can quickly check and update interface versions whenever needed.

• Check the active Interface Version from your Interfaces > Projects tab
• Switch the Version for your project(s)

New "All-Time" Filter for Member Performance

Member Performance analytics now includes an All Time option in the date selector, so you can see a member's full contribution history in one view instead of piecing it together from fixed date ranges.

• Select "All Time" from the date picker under Analytics > Member Performance page.
• Switch back to a custom range at any point without losing your place.

Fixes and Improvements

• (Breaking Change) Acceptance score now uses the latest review outcome for each annotation. So, if an annotator updates a rejected annotation, that rejection still counts until a reviewer records a new verdict. Previously, updated annotations were not considered in the Acceptance Score.
• Relation arrows no longer render through shapes on NER and other labeling interfaces.
• Locked text regions can no longer be resized.
• Annotation and review child filters are now role-aware and evaluate consistently across the review workflow.
• Selected versions in the Interfaces Versions sidebar stays visible as you switch between Preview, Data I/O, and Code, displaying the content relevant to the currently-selected version.

Member Performance Now Supports up to 1000 Members

Analytics > Member Performance now supports selecting up to 1000 members per view, up from 50. The member list also follows your workspace or project selection, so you're choosing from the right people instead of your entire org.

Updated SDK with new KPIs

Analytics KPI data is now available through the API and the label-studio-sdk.

• The public API schema also now documents several new request fields.
• Some APIs have been deprecated (tagged "Deprecated"), and will not receive further updates or maintenance. Instructions to use a suitable alternative is provided for each deprecated endpoint.

Data Manager User Filters Now Scoped to Your Projects

Annotator, reviewer, and other user filters in the Data Manager now show people with access to your selected project instead of your entire organization. A filter also keeps showing people relevant to its specific column, including past contributors who later lost project access, so historical filters still resolve correctly.

Set Hotkeys Per Project

Override your keyboard shortcuts for an individual project without changing your account-wide defaults. Edit overrides for any project you have access to from My Account > Hotkeys.

Fixes and Improvements

• The Interfaces Web Agent now fails over across model providers automatically, so a rate limit or outage on one provider doesn't stop your agent from responding.
• Improved Data Manager filter and locked-tab experiences, including a read-only view of tab filters on locked tabs and preventing hidden columns from reappearing after unlocking a tab.
• Fixed vector region drawing being blocked when video vector labels exist on the same video
• Improved keyboard accessibility of Badge close buttons, including tab order and touch target size.

Filter Annotations by Annotators, Review Status, Comments, and more in Data Manager

Data Manager "Annotations" filters now support additional child filters. Filter by annotator(s), ground truth status, review outcome, reviewer, comment author, and select multiple values per filter at once.

• Combine several annotators, reviewers, or comment authors in one filter instead of switching between single-value filters.
• Works alongside the existing per-row AND/OR combination logic for annotation and prediction filters.

Right-Click Context Menus on Projects and Members Tables

Right-click any row in the Data Manager, the Organization Members table, or a project's Members page to get the same actions previously available only from the overflow menu, plus your browser's standard right-click options like opening a link in a new tab.

Fixes and Improvements

• Fixed the Data Manager multi-select user filter losing its search results after you picked a user.
• Fixed vector regions not displaying on video tasks after using Track Both, Stop, and Submit, and stopped LiDAR relation connectors from going stale after panning or zooming the bird's-eye view.
• Sorted Label Distribution projects newest first and corrected prediction and annotation total percentages so they reflect the right totals.
• Restored rejected tasks for paused annotators with Data Manager access when they're eligible for update.

Filter by Multiple Annotators and Reviewers at Once in Data Manager

Data Manager filters for Annotators, Reviewers, Comment Authors, Updated By, and Skipped By now accept more than one value at a time. Build a single view across several teammates instead of switching filters back and forth or exporting multiple views to compare them.

Filter a Wider Range of Annotation and Prediction Results

Data Manager annotation and prediction result filters now cover more granular dimension-level data, including results produced by Interfaces with per-row AND/OR logic for combining conditions. Narrow down to exactly the results you need to review or export.

Fixes and Improvements

• Fixed CSV import so columns are preserved when task data keys collide with control tag names.

Add or Update Columns in Task Data

As your project progresses, you may find that you need to add metadata columns or update fields along the way. Now, you can more easily add new data columns update values through the UI.

Additional fields (e.g. batch, priority, source, slice_id) can be used as filterable/sortable columns to more easily create the most useful task views.

Vertical Annotations Sidebar

Instead of having to scroll through different annotators on top tabs, you can now display annotations vertically on the left-hand side.

This is helpful when one task may have multiple annotations, or when you want to search for a specific annotator or label.

In a task, open up the Settings button on the bottom, and choose "Display annotations in vertical panel".

Bulk Review Action

Select multiple tasks and bulk Accept or Reject annotations from All Annotators or a certain Annotator.

This enables you to process reviews faster, especially from trusted annotators or high-agreement tasks.

Additional enhancements

• Filter for a much wider range of annotation and prediction results on Data Manager, including dimensions from Interfaces
• Export to CSV the list of active project members from the Project Settings > Members page
• Manager roles and above can Lock a Data Manager tab so its filters and columns stay fixed
• Admins can let people from a verified email domain join the organization through your existing SSO, without a separate invite for each person

Label Studio SDK 2.1.0

SDK 2.1.0 is now available on PyPI. This release focuses on stronger typing across the SDK, along with expanded response objects and new filtering options.

• Roughly 100 typing fixes in the public API. Fields that were previously typed as strings, such as pause, members, model_params, and workspace, now use proper object, boolean, integer, and number types in requests and responses.
• Enum types now have readable names (for example, Role9e7Enum is now OrganizationRoleEnum), and all id path parameters are properly typed as integers.
• New optional query parameters for filtering across several endpoints, including ML backends, organization memberships, predictions, projects, annotation history, and compatible projects for Prompts.
• Richer response schemas for several endpoints, including project updates, token rotation, and FSM backfill.

For full details, see the release notes on GitHub.

Video object segmentation and tracking for SAM 2

There is a new VideoVector tag that brings Segment Anything 2 (SAM 2) video segmentation and tracking into your annotation workflows.

With SAM 2 connected, you can segment an object once using points or bounding boxes, and the model will track it across frames as the video plays, even when the object moves in and out of frame. This removes the need to segment objects frame by frame.

To get started, you will need an ML backend (an open-source example is available) and GPU-backed hosting for your model. Then, in Label Studio:

• Build your labeling config with the VideoVector tag
• Connect your model
• Enable pre-annotations and auto-annotation

For more information, see the blog post or watch the 2-minute video tutorial.

Dashboards for projects

There are now two new dashboards available for projects: Throughput for tasks progress and Data Quality for agreement and label distribution. The Members dashboard has been updated with additional dimension-level metrics and reviewer work, and it is now also available under the Dashboards tab at the project-level.

Learn more in the docs

Vibe Code Labeling and Evaluation Interfaces

We're introducing Interfaces, an agentic builder for creating highly customized, multi-modal labeling UIs that you can reuse across projects.

Instead of selecting a template and tuning XML tags, use natural language to describe the labeling experience, and Label Studio generates a fully interactive interface that you can preview, refine, save, and share. With Interfaces, you can:

• Annotate data types that classic XML tags don't support, such as 3D files, GeoTIFF, and LiDAR
• Build custom logic directly into the interface component, rather than maintaining it separately as a plugin
• Reuse interfaces across projects as first-class objects, with built-in version history and one-click rollback

Review workflows, Agreements, Analytics, exports, and Prompts LLM-as-a-judge and pre-labeling workflows are supported with Interfaces.

Interfaces are available to users in the Owner, Admin, and Manager roles, and can be enabled or disabled for your organization from Organization > Settings > Interfaces.

For more information, see Interfaces.

Video Vector

Log in with Google and GitHub

When logging in and inviting new users, you will now see options to login with Google or with GitHub.

• For new and existing users, social logins only work if their email address domain matches the domain associated with your organization. For example, if an organization is owned by heidi@humansignal.com, then heidi.annotator@gmail.com cannot sign up or login via social login.
• Existing org members can use the social logins even if they have already established a password.
• For new org members, they can sign up via Google/GitHub if provided an invite link.

Service accounts

You can now create service accounts for your organization.

A service account is granted programmatic access to Label Studio via our API, but cannot login or interact with the Label Studio UI.

By default, each organization can create one service account. This service account does not count towards your license's seat count.

You can create and manage service accounts from Organization > Settings > Service Accounts.

For more information, see Service accounts.

Filter against "is any of" and "is none of" value lists

You can now filter by is any of and is none of.

These filters accept value lists and can be used with the following fields:

• Task ID
• Inner ID
• task.data

Dependency updates

Made several security enhancements by updating key dependencies.

Performance improvements

Made performance improvements around image loading.

Review sampling

There is a new section under Project > Settings > Review that you can use to configure how many tasks should be sampled and sent to reviewers.

• Basic Sampling - Set a fixed percentage of eligible tasks to route for review.
• Agreement-based Sampling - Route tasks to review based on their agreement scores. For example, you can configure your project to review all tasks that have an agreement score less than 80%.

For more information, see Review Sampling.

Additional options for publishing projects

You can now publish projects by clicking the project state badge or from Settings > General.

Bulk assign members to projects or workspaces from the organization Members table

You can now bulk assign members to projects or workspaces from the Organization > Members table.

Indicator icon for agreement columns

If the settings for the Agreement columns in the Data Manager have been modified, you will now see a dot indicator icon.

Custom colors for workspaces and projects

You can now apply a custom color to project and workspace cards:

Project Members and Dashboard pages navigation change

As we continue to improve dashboards and analytics, the location of the project-level Members dashboard has changed. You can now find it alongside the project dashboard.

The project dashboard is now labeled Throughput.

Improved organization settings navigation

The Organization page navigation has been updated to consolidate settings locations.

• Member Tags and Activity Logs have been moved to the left-hand menu.
• The Usage & License page now only shows license and seat information.
• There is a new Security page for setting related to security:
  • Role Permissions (visible only to users in the Owner role, and previously located under Settings)
  • Access Token (previously located under Settings)
  • SSO & SCIM (previously located under Settings)
  • Session Timeout (previously located under Usage & License)
  • Storage Proxy (previously located under Usage & License)
• The Settings page now has the following:
  • Features (previously located under Usage & License)
  • Email Notifications (previously located under Usage & License)
  • Model Providers (no change)

Per-control-tag agreement included in task exports

You will now see a per_control_tag_agreements field in task exports, which maps each active control tag name to its agreement percent (0–100) for the task.

Publish projects from the breadcrumbs menu

Publishing controls for projects have been moved to the breadcrumbs menu.

To publish a project, click the pause icon ▶️ in the breadcrumbs menu.

Cloud storage visibility during project setup

When creating new projects, the option to set up cloud storage is more prominently visible with a link to the cloud storage setup workflow.

Performance improvements

Improved performance for filtering and sorting per-control-tag agreement.

Improved performance when filtering for compatible projects when creating a Prompt.

PDF labeling enhancements

Per-page classification

If you are using a tag that supports the perItem="true" parameter (for example, Choices, Rating, Taxonomy, Number, TextArea), you can now apply those annotations to individual PDF pages.

Page thumbnails

You can now view thumbnails for each page. These thumbnails will also provide information about any page-level annotations.

Configure ReactCode permissions

Administrators can now configure ReactCode permissions from Organization > Usage & License.

From here you can configure whether to enable ReactCode or whether to restrict it so that it is only allowed in external app mode.

You can also configure allowed origins and which browser features that iframes can access.