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September 10 2026 Update

· 3 min read
H&Z digital
H&Z GenAI Platform Team

The September update adds Projects you can share, a customizable workspace on the landing page, rendered previews of HTML, Markdown, SVG and Mermaid results, and larger document uploads.

Highlights​

  • Group conversations into projects and share them with people and groups
  • Arrange the landing page's widgets; the layout is saved to your account
  • Preview HTML, Markdown, SVG and Mermaid results in a panel beside the chat
  • Download code blocks and files that 4C:me creates
  • Upload documents of up to 50 MiB

Chat​

  • Added a preview panel that renders HTML, Markdown, SVG and Mermaid results instead of leaving them as raw code
  • Added a download button to code blocks, and made copying a reply carry its diagrams as images
  • Grouped citations in replies so sources are easier to follow
  • Added a model fallback dialog so a chat continues when an agent's preferred model is unavailable
  • The selected chat is now kept when the page is refreshed
  • Fixed pasted text arriving with stray formatting or unwanted line breaks
  • Fixed a prompt template not being reusable after the composer was cleared

Projects and Sharing​

  • Conversations can be linked to a project from the chat
  • Projects can be shared with specific people and groups
  • Shared projects open their conversations for everyone with access, including encrypted messages
  • Selected recipients stay pinned at the top of one combined share list
  • Added ownership checks so only people with access can reach a conversation or project

Landing Page​

  • Added recent chats, feedback and project activity widgets
  • Widget layouts are saved per user, so a rearranged page stays that way
  • Moved widget filters into popovers and added captions to the header icons
  • Files can be dropped straight onto the landing page to start a chat

Agents and Knowledge Bases​

  • An agent that has an index but no knowledge base now explains the problem instead of appearing stuck
  • Agents linked to the knowledge base you are viewing are listed first
  • Fixed agents that could get stuck in a working state

Files and Documents​

  • Raised the maximum document size to 50 MiB, and raised the limit for a batch of uploads
  • Added support for more Office template file types
  • Files can be attached to prompts and processed with them
  • Files 4C:me creates can be previewed and downloaded

Reliability​

  • Busy or rate-limited AI providers are now retried, and the reason is explained instead of a generic error
  • Presets and prompt templates stay visible when one of them fails to load
  • Fixed the sign-in step requesting a permission Microsoft has retired, which blocked some saves
  • Scheduled tasks verify who is asking before running, and reject recipient lists over the 50-address limit
  • After signing in you are returned to the tool you originally opened
  • Feedback can be translated in place