AiChat

A lightweight, self-hosted web interface for various AI chat providers including Anthropic Claude, OpenAI ChatGPT, Google Gemini, Mistral, Cohere, and more. Built with PHP and modern javascript with zero dependencies, it offers a clean, responsive interface with support for multiple AI models, file attachments, and real-time streaming.

Live demo at: https://ai.datasteam.com/aichat

Features

Provider Support

• Anthropic Claude - Including Claude 3 Opus, Sonnet, and Haiku (latest and versioned models)
• OpenAI ChatGPT - Including GPT-4 and variants
• Google Gemini - Including Gemini 2.0 Flash and 1.5 Flash
• DeepSeek
• Mistral AI - Including Mistral Large
• Cohere - Including Command-R Plus
• X.AI Grok - Including Grok Beta and Grok 2
• Groq - Including LLaMA 3.3 70B and Mixtral 8x7B
• Together AI - Including Meta LLaMA models and DeepSeek LLM
• Local Providers
  • LM Studio
  • Ollama

Interface Features

• Real-time Streaming - Toggle-able streaming responses with SSE support
• Code Highlighting - Syntax highlighting via prism with copy-to-clipboard functionality
• Theme Support
  • Light/Dark mode switching
  • Multiple color themes
• File Management
  • Upload and attach multiple files to prompts
  • Support for text files and images (provider-dependent)
  • PDF support for compatible providers
  • 15MB file size limit
  • Intelligent MIME type detection
  • Base64 encoding for binary files
• Chat Features
  • Message history with session persistence
  • Token usage tracking
  • Conversation reset capability
  • Mobile-responsive design

Requirements

• PHP 7.2 or higher
• Web server (Apache, Nginx, etc.)
• API keys for your chosen providers

Installation

1. Download or clone this repository to your web server
2. Configure your web server to serve the application directory
3. Optional: Configure your API keys by lib/config.php directly.

For usage instructions, please refer to the User Guide.

API Usage

The application provides a REST API that can be accessed using curl or any HTTP client. Here are some examples:

Basic Text Request

curl -X POST "https://localhost/aichat/api.php" \
  -H "apikey: PROVIDER-API-KEY" \
  -d "provider=chatgpt" \
  -d "model=gpt-4o" \
  -d "stream=1" \
  -d "reset=0" \
  -d "text=add 1" \
  -b "PHPSESSID=mysession"

File Upload Request

curl -X POST "https://localhost/aichat/api.php" \
  -H "apikey: PROVIDER-API-KEY" \s
  -H "Content-Type: multipart/form-data" \
  -F "provider=chatgpt" \
  -F "model=gpt-4o" \
  -F "stream=1" \
  -F "reset=0" \
  -F "text=analyze" \
  -F "files[]=@file1.txt" \
  -b "PHPSESSID=mysession"

Parameters:

• stream: Set to 1 to enable streaming responses
• reset: Set to 1 to reset conversation history, 0 to maintain it
• files[]: Array of files to upload (multipart/form-data only)
• PHPSESSID: Cookie used to maintain conversation state.

General Notes

• API keys entered via UI are stored in browser localStorage
• File uploads are temporary and cleared after each request
• Session data uses PHP native sessions with optional Memcache support
• File upload validation with MIME type checking

Technical Documentation

For detailed technical documentation including provider implementation, session configuration, and application extension, see Technical Guide.

Contributing

Contributions are welcome! Please feel free to submit Pull Requests. Areas for contribution include:

• Additional provider integrations
• New themes
• Interface improvements
• Documentation updates
• Bug fixes

Credits

Markdown Processing

• markdown-it (v13.0.1) - Markdown parser, created by Vitaly Puzrin and Alex Kocharin
• markdown-it-footnote (v3.0.3) - Footnote support, by Vitaly Puzrin
• markdown-it-emoji (v2.0.2) - Emoji support, by Alex Kocharin
• markdown-it-task-lists - Task list support, by Revin Guillen
• markdown-it-sub (v1.0.0) - Subscript support, by Vitaly Puzrin
• markdown-it-sup (v1.0.0) - Superscript support, by Vitaly Puzrin
• markdown-it-deflist (v2.1.0) - Definition list support, by Vitaly Puzrin
• markdown-it-abbr (v1.0.4) - Abbreviation support, by Vitaly Puzrin
• markdown-it-container (v3.0.0) - Container support, by Vitaly Puzrin
• markdown-it-ins (v3.0.1) - Insert/underline support, by Alex Kocharin
• markdown-it-mark (v3.0.1) - Mark/highlight support, by Vitaly Puzrin
• markdown-it-attrs (v4.3.1) - Attribute support, by Anton Medvedev
• markdown-it-anchor (v9.2.0) - Header anchor support, by Valentin Gagarin

Syntax Highlighting

• Prism (v1.29.0) - Syntax highlighting with autoloader plugin, created by Lea Verou and maintained by the Prism team

Fonts

• Inter - Primary UI font, designed by Rasmus Andersson
• JetBrains Mono - Monospace font for code blocks, designed by JetBrains

License

This project is open source software under the Apache 2.0 license.
Created and maintained by Periklis Koutsogiannis pkoutsogiannis@gmail.com