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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