# ChatOpen — Lightning Fast AI Chat

> Ultra-fast AI chatbot utilizing advanced open-source models. (iPhone/iPad app by 凯 陈.)

- Source: https://appshunter.io/ios/app/chatopen/id6502237427 (this page in markdown: same URL + `.md`)
- Developer: [凯 陈](https://appshunter.io/developer/1720985285)
- Category: Utilities
- Price: Free
- Rating: 2.50/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 17+
- Requires: iOS 13.0 · 46 MB
- Languages: English
- Released: 2024-06-10
- Data updated: 2026-07-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/chatopen/id6502237427/reviews.md

## What is ChatOpen?

ChatOpen, ultra-fast and advanced AI chatbot. Featuring:
* Free to use,
* Lightning-fast responses,
* Cutting-edge open-source models, including Llama3.1 70B, Llama3.1 8B, Mixtral 8x7B, and Gemma2 9B.

## Key features

- Free to use
- Lightning-fast responses
- Open-source models
- Llama3.1 support
- Mixtral support
- Gemma2 support

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/chatopen/id6502237427/reviews.md

### 1/5 — Dude

*2024-09-01*

It don’t work

## Frequently asked questions about ChatOpen

### What AI models does ChatOpen use?

ChatOpen utilizes cutting-edge open-source models including Llama3.1 70B, Llama3.1 8B, Mixtral 8x7B, and Gemma2 9B.

### Is ChatOpen free to use?

Yes, ChatOpen is completely free to use, offering advanced AI capabilities without any cost.

### How fast are ChatOpen's responses?

ChatOpen is designed for lightning-fast responses, providing quick and efficient interactions with its AI models.

### What devices does ChatOpen support?

ChatOpen is available on iPhone and iPod devices.

### What is the age rating for ChatOpen?

ChatOpen has an age rating of 17+, indicating it may contain content suitable for mature audiences.

### When was ChatOpen last updated?

The latest version of ChatOpen was released on July 24, 2024, with version 1.1.5.

### Does ChatOpen have ads?

Based on the provided data, ChatOpen does not contain advertisements.

### What is the user sentiment for ChatOpen?

ChatOpen has a rating of 2.5 stars from 4 ratings, suggesting mixed user sentiment.

## Version history (last 5 releases)

### 1.1.5 — 2024-07-24

We support Llama3.1 70B and Llama3.1 8B!

### 1.1.4 — 2024-06-30

1. The link in the message is ready to click.
2. Optimize user experience

### 1.1.3 — 2024-06-26

1. Added some referral questions that may be of interest to you.
2. Optimize UI experience and performance.

### 1.1.2 — 2024-06-23

1. Resolve the problem of model selection not persisting after app restart

### 1.1.1 — 2024-06-23

1. Enhance user engagement.
2. Boost App efficiency.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-04.*