v2.53.0 v2.54.0
HumanSignal/label-studioOct 2, 2026 → Oct 3, 20261 day between releases
What's New
Adds CLAI2 rewind menu, session reconnection, and native web search tools
Breaking Changes
- SubAgents `agent_folders` default-change warning dropped (deprecated since v2.52.0)
- TestModel now caps `prefixItems` at `maxItems` and accepts boolean subschemas
New Features
- Added double-Esc rewind menu to CLAI2
- Added native web search options for ExaSearch and YouSearch
- OpenAI Live sessions can now reconnect by forking or replaying history
- Support for GPT-live-transcribe as the default input transcription model
- New cancel_and_resume example for streaming runs
Improvements
- Default Pydantic AI HTTP clients now use OpenAI SDK connection pool limits
Bug Fixes
- Fixed ImageGeneration under FallbackModel and dataclasses.replace
- Fixed Embedder comparison by identity
Upgrade Notes
Ensure your schemas do not exceed `maxItems` in `prefixItems` arrays, and if using SubAgents, explicitly pass `agent_folders='agents'` to avoid loading errors now that the default warning has been removed.
The Two Releases
v2.53.0 (2026-10-01)
Oct 2, 2026· 20 days ago
This release patches a critical security vulnerability in ConcurrencyLimitedModel and introduces new built-in plugins, managed subagents, and the ToolCallJudge.
Full release notesv2.54.0 (2026-10-02)
Oct 3, 2026· 19 days ago
A feature-rich release focusing on CLAI2 improvements, including a double-Esc rewind menu, session reconnection capabilities, and enhanced search tool integrations.
Full release notes