Castly vs Q – ChatGPT for Slack

Comparing the features of Castly to Q – ChatGPT for Slack

Feature
Castly
Q – ChatGPT for Slack

Capability Features

ChatGPT Integration
Content Sharing
Custom Instructions Input
Expense Managed Per Workspace
GPT-5 Trial Model
GPT-5
No Data Storage or Learning
No Data Used for Training
No Repeated Login Interruptions
On-demand URL and File Reading
Plugins Available
google searchdocument search
Pro Tier PDF Uploads
Unlimited
Pro Tier Published Posts
Unlimited
Question Answering over Audio
Question Answering over YouTube
Text Editor Interface
Unlimited Access
Unlimited Chat
Unlimited Chats

Integration Features

Active Discord Community
Google Workspace URLs with Authentication
OpenAI Integration
PDF File Support
Slack Integration
Supported File Formats
AudioVideoPDFImageExcelPPTWordTextCSVCode
Supported URLs
General URLsarXiv (Paper)YouTubeGoogle SlidesGoogle DocsGoogle SheetsNotion

Limitation Features

Cannot Split Workspace Billing
Does Not Store Conversation Content
Free Tier PDF Size Limit
10
Free Tier Published Posts
5
Inaccurate Information Risk
Offensive Content Risk
OpenAI Retains Data for 30 Days
30
Pro Tier PDF Size Limit
50
Reads Slack Thread Content Only
Slack Only Platform

Pricing Features

Extra 7+ Day Trial via Reinstall
Free Tier
Free Tier PDF Uploads
5
Free Trial
14
Free Trial Period
No Credit Card Required
Paid Plan Required After Trial
Pro Plan Price
$12/month
Workspace Billing Unit
workspace