Changelog
New features, improvements and fixes in every stable LangBot release.
The final 4.11.x stable release, replacing the withdrawn 4.11.6, fixes concurrent token counting, Windows plugin output, plugin runtime reconnects, first knowledge base ingestion, SQLite writes and Dify/Coze Runners.
- ImprovedToken counting works fully offline, and if counting times out or fails, LocalAgent estimates and keeps the conversation going.
- ImprovedOn adapters such as HTTP Bot and OneBot, Runner interactions like Dify human-input steps fall back to text questions, one form field at a time.
- FixedToken counts are no longer rejected when several conversations use the same model at once; if you installed 4.11.6, upgrade to this release.
- FixedOn Chinese-locale Windows, plugins printing Chinese text or emoji no longer disconnect the plugin runtime, and the first conversation no longer stalls downloading tokenizer files.
- FixedDuring startup or a plugin runtime reconnect, messages wait for plugins to be ready instead of failing or reporting a missing Runner.
- FixedThe first knowledge base ingestion on a slow machine no longer drops the plugin runtime or fails.
- FixedPlugin storage writes no longer fail on pip/uvx installs with SQLAlchemy 2.1, and SQLite
database is lockederrors are less frequent. - FixedThe Box sandbox handles very long commands and large attachment imports.
- FixedCoze and Dify Runners no longer treat completed or workflow outputs as empty replies, and LocalAgent no longer errors on an empty reasoning setting.
- FixedThe
!funccommand in the official EssentialCommands plugin works again.
Plugins and Agents can call Workspace APIs, speech models and cross-platform interactive cards arrive, and many platform and runtime issues are fixed.
- NewPlugins and Agents can search and install Marketplace plugins and read the Workspace language through the Workspace API.
- NewTTS and STT speech models with matching pipeline stages, including LangBot Space speech models.
- NewCross-platform interactive cards for QQ, WeCom, Feishu and DingTalk.
- NewA new LINE adapter, Slack thread replies, proactive sends for WeChat Official Accounts, QQ Official emoji parsing, and NVIDIA NIM as a model provider.
- NewNew official MulticaAgent, HandoffBridge and LeadCapture plugins, plus one-step upgrades of Marketplace plugins across all Workspaces.
- ImprovedMonitoring shows plugin-handled messages, the pipeline rule that dropped a message, and model calls plugins make outside a pipeline.
- ImprovedRunners receive images and files in their original order; official Runners such as Dify, Coze, Tbox and ACP are updated.
- FixedDeleted Pipelines and Agents no longer receive messages.
- FixedNon-streaming platforms deliver Runner replies one message at a time, and HTTP Bot
/syncreturns each reply only once. - FixedWeCom reconnects after a failed heartbeat, and plugin runtimes start more reliably on Windows.
Official plugins upgrade independently, expired image links refresh automatically, and database migration, plugin runtime and platform issues are fixed.
- NewPlugin packages under development can be uploaded straight to LangBot Space, optionally linked to a GitHub repository.
- ImprovedOfficial plugins such as LocalAgent, LangRAG and DifyAgent ship on their own and can be upgraded without waiting for a LangBot release.
- ImprovedExpired OneBot image links are refreshed automatically in history and model requests.
- ImprovedSQLite databases reclaim space incrementally, using less disk.
- FixedCancelled executions no longer stay stuck “in progress”.
- FixedQQ Official group mentions and reply order, smoother WeCom streaming replies, and conversation context for LINE and HTTP Bot are fixed.
- FixedDatabase migration failures and rollbacks are fixed.
A fix release for dedicated deployments.
- FixedSigning in with LangBot Space on dedicated environments no longer returns 404, and adding the first model no longer fails.
- FixedPlugin installs reject archives with unsafe file names.
Improves monitoring performance, message handling and plugin compatibility.
- ImprovedSession lists in Monitoring load faster.
- ImprovedFailed plugin installs show clearer diagnostics.
- FixedFixes execution end states, message filtering, explicit attachment delivery and message handling on some platforms.
- FixedHistorical images are stored and migrated more reliably.
Bots can react to platform events, Agent runners become plugins, and the WebUI adds a Workspace Assistant.
- NewEvent-based bots: joins, leaves, recalls, reactions, card clicks and more can be routed to a Pipeline, an Agent or a plugin in Event Routing.
- NewEvent debugger: edit event payloads in a form and inspect run logs and execution details.
- NewNew Agent runners including Codex, Claude Code and ACP.
- NewWorkspace Assistant: look up resources and set up Pipelines and knowledge bases by chatting in the WebUI; changes run only after you confirm.
- NewPasskey sign-in and TOTP two-factor authentication.
- NewThe operation log records what each change did.
- NewSlack Socket Mode, DingTalk card interactions, the WeChat typing indicator, OneBot WebSocket and more.
- NewA guided tour and a scenario-based bot setup wizard.
- ImprovedMonitoring adds a unified execution view, tool-call tracing and a live in-progress panel.
- ImprovedMedia files are deduplicated, so the database grows more slowly.
- ChangedRunners such as LocalAgent, Dify, Coze and n8n are now official Marketplace plugins; upgrading installs them automatically and backs up your configuration.
- FixedFixes empty messages and early-ending streaming replies in the WeCom AI Bot.