UsingOpen vs PHP Chatbot Assistant

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

UsingOpen compared with PHP Chatbot Assistant
Detail	UsingOpen	PHP Chatbot Assistant
What it does	Free AI chat with open models, no account or sign-up required	A free chatbot you run on your own server
Stage	Not given	Not given
Founded	Not given	2023
Based in	Not given	US
Pricing model	Free	Open source
Pricing	Free with 10 prompts per day. UsingOpen Studio desktop app is $19 USD one-time purchase, or ¥99 CNY in mainland China.	Free. You only pay for the services you use to run it: your server, the AI provider's models, and any third-party service for reading PDF and Word files.
Key features	Access to 20+ open-weight AI models including DeepSeek, Qwen, GLM, Gemma, GPT-OSS, Kimi K3 and MiniMax M3 No account required, no sign-up, no email or password needed 10 free prompts per day, reset at midnight UTC Chat history saved locally on your device, never sent to servers Streaming responses with visible reasoning for thinking models Compare two models side by side in the same conversation Live model availability status and real-time capacity information Responsive design, installable as standalone mobile app	Support for multiple AI providers Website widget with customizable colors and positioning Data stays on your own server and database
What makes it different	Complete privacy - chat history stays only on your device and is never sent to servers Model picker with real-time availability, not a single locked-in assistant	Data stays in your control on your own server Built for multi-client hosting with forced row-level security
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	1 no change since last check
Trust Flow (Majestic)	1	1
Citation Flow (Majestic)	17	10
Referring domains (Majestic)	5	7

5 details filled in for both companies.

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