Release 2026.18
4 min read
📌 Release Overview
2026.18
Unique hosted:
Self hosted:
Chat Platform
🚀 What’s New (Business/End-User Focus)
User New Version Modal:
Smoother Chat releases: Chat is deployed with a rolling update strategy so new versions roll out gradually instead of replacing every instance at once—releases are less likely to take the whole app offline for a moment.
Stay on the latest build after a release: When FEATURE_FLAG_DEPLOYMENT_VERSION_CHECK is on, if you keep Chat open while a new version goes live, you get a “New version available” prompt to reload so your session matches the new deployment and avoids odd behavior from mixed old/new versions.
Admin Enable Feature flag: FEATURE_FLAG_DEPLOYMENT_VERSION_CHECK needs to be enabled on chat service only.
User File Preview in Select Files to Chat:
When FEATURE_FLAG_FILE_PREVIEW_UN_19395 is on: Users can now directly preview files through the "Select Files to Chat" sidebar, eliminating the need to search for them in the knowledge base. File types that cannot be rendered in the browser will be downloaded instead.
User Select Uploaded Files as Chat Context: When FEATURE_FLAG_ENABLE_SELECTED_UPLOADED_FILES_UN_18215 and FEATURE_FLAG_ENABLE_NEW_ANSWERS_UI_UN_14411 are on, a new Uploaded files tab now appears in the chat's Select Files side panel, listing files uploaded in the current chat. Users can include or exclude individual files (or all at once via select-all) to control which uploaded files are used as context for their next message.
🔧 Improvements
User PDF Viewer Opens at Readable Zoom: Clicking a source reference in chat now opens the PDF side panel at 100% zoom in a wider default panel, so documents are immediately readable without manual zooming or resizing. Users can still adjust zoom and panel width as before.
User Hallucination Check Indicator on Low-Risk Messages: A subtle indicator (a small green check icon inline with the message actions) with the assessment title on hover, now appears on assistant responses that passed the hallucination check (low/green). Moderate (yellow) and high (red) results continue to surface as the prominent floating bubble above the chat input, so successful checks are visible without competing with the more attention-grabbing warnings.
🐞 Bug Fixes
User Advanced formatting in chat history: Fixed "Failed to load" errors when viewing past chat search results containing advanced formatting blocks (charts, HTML rendering), and removed raw fence markup from chat history sidebar previews.
User AdminPurple MCP Route Guard feature flags: Fixed feature flag evaluation in the MCP Route Guard to read flags from FeatureFlagContext instead of direct config access, ensuring flags are correctly resolved per-tenant.
RAG
🔧 Improvements
User Exclusive File Access(Experimental): Improved folder privacy so if you only have access to certain files within a folder you do not have any access to, you'll now see restricted or whatever you have configured as the default instead of other folder names you don't have permission to view.
Agentic Table
🔧 Improvements
User Efficient export to the answer library: Row metadata is fetched together with cell data when you export a sheet to the answer library, instead of one request per row—large sheets see fewer background calls.
Admin RfpAgent on dedicated service assistants-agentic-table : The RFP agent runs in this service; The Chat backend now targets its webhook instead of routing everything through the assistants-core backend service, isolating Agentic Table workloads for safer upgrades and tuning.
Unique AI
🐞 Bug Fixes
User Fix LaTeX Rendering: Fixed an issue where LaTeX-style outputs (e.g., from Qwen3) were not rendered correctly in the frontend and appeared with raw $$ delimiters. LaTeX expressions are now properly rendered, consistent with Markdown behavior across supported models.
Admin New Models Added to Unique AI Approved List: GPT-5.5, Anthropic Claude Opus 4.6, and Anthropic Claude Opus 4.7 have been added to the approved model list. These models are now appearing in the Unique AI dropdown, provided they are enabled for your organization.
Deprecation Notice:
Admin Internal Search Scope IDs: The scopeIds parameter in the internal search configuration is deprecated. This parameter should no longer be used for any new or future spaces. If you are currently using scopeIds to limit search scopes, please migrate these settings to the Knowledge Base filter available at the top of the internal search configuration. Existing Spaces will continue to work, but should be migrated to the new approach.
Deprecated parameter
Use filter to limit knowledge base available for search
Language Model
New Model Deployments
Admin GPT-5.5 is now available both through Azure and LiteLLM: For Azure OpenAI, use AZURE_GPT_55_2026_0424, for OpenAI via LiteLLM, use either litellm:openai-gpt-5-5. Note that currently the model is only available with Global deployment.
Admin Claude Opus 4.7 is now available both throughLiteLLM: Use either litellm:anthropic-claude-opus-4-7.
Upcoming Model Retirement:
Claude Opus/Sonnet 4
Admin Due to the upcoming retirement of Claude Opus 4 and Claude Sonnet 4, all spaces and AI templates previously using litellm:anthropic-claude-4-sonnet and litellm:anthropic-claude-4-opus have been migrated to Claude Sonnet 4.6 (litellm:anthropic-claude-sonnet-4-6) and Claude Opus 4.6 (litellm:anthropic-claude-opus-4-6).