September Product Update

Oct 3, 2025

Divesh Punjabi

Product Manager

We’ve rolled out exciting new updates to the Stack AI platform.

These include System Variables, Template Categories, API Key Governance, Grok 4 Fast & Claude 4.5 Sonnet and more.

What’s New

Governance: API keys

Centrally manage and track API keys across your organization for better governance & security.

Template Library: Categories

Organize your template library with categories, making it simple to save, find, and manage your favorite templates.

System variables

Reference system variables like the user’s name, current time, and others, for more personalized experiences with end-users.

UI/UX Improvements

Unified panel for variables

See all your nodes, tools, system variables in one place - and include them as references in your instructions and/or prompts

Note: We’ve removed $ and / to reference variables

User-controlled LLM parameters

Select which parameters are determined by the LLM, and which are determined by the user.

KB: Enhanced metadata view

Group actions by tags

Export Batch results and Analytics Logs as PDF

New integrations & actions

  • Perplexity: Search Perplexity’s continously updated index to retrieve results that power your workflows

  • Hyperbrowser: Get, Create, and Stop session to make it easier to setup RPA workflows for authenticated crawls and more

  • PowerBI: use natural language to query

  • Google Sheet & Excel: Formula support

New models

  • xAI: Grok 4 Fast with 2 million context window

  • Anthropic: Claude 4.5 Sonnet

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Stay tuned for more exciting updates from us in the next two weeks!

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