# Chat LLM - Language Models Information
> Name: Chat LLM
> Description: Multi-provider AI chat platform with 395 AI models, 34 free. No registration required.
> URL: https://chats-llm.com
> Type: Web application with API endpoints
> Pricing: Free tier available, premium from $4/month (Lite plan; Starter $8, Pro $15)

### BYOK or BYOK Only (Bring Your Own Key)
- anthropic/claude-opus-5 (Claude Opus 5)
- OpenAI, Anthropic, Google, xAI
- Custom OpenAI-compatible endpoints via base URL

## API Endpoints

### Chat & Completions (OpenAI-compatible)
- POST /api/v1/chat-completions - Chat completion with streaming
- GET /api/v1/models - Available models catalog

### Anthropic-compatible
- POST /api/v1/messages - Messages API with streaming

## Request Format

### Chat Completion
```
POST /api/v1/chat-completions
Authorization: Bearer <session-token or api-key>

{
  "model": "deepseek/deepseek-v4-flash",
  "messages": [
    {"role": "system", "content": "You are helpful."},
    {"role": "user", "content": "Hello"}
  ],
  "stream": true,
  "temperature": 1,
  "max_tokens": 40000
}
```

### Supported Parameters
- messages: Array of message objects (system, user, assistant)
- model: Model identifier (e.g., "deepseek/deepseek-v4-flash")
- stream: Enable streaming (boolean)
- temperature: 0-1 range
- max_tokens: Maximum response tokens
- stop: Stop sequences
- top_p: Nucleus sampling
- tools: Function calling (OpenAI format)
- thinking: Extended thinking (Anthropic format)

## Features

### Full-Stack IDE (WebContainer)
- Code generation with syntax highlighting
- File creation and management
- Live preview with hot reload
- Terminal access

### Image Generation
- Flux, Stable Diffusion, GPT Image, Imagen 3
- Via dedicated studio page or chat

### Document Understanding
- PDF, DOCX, DOC support
- One-shot text extraction and analysis

### Streaming Responses
- Real-time token streaming via SSE
- Low-latency interactions

### Live Search to bypass model cutoff dates
### Context7 support for up-to-date programming documentation

### Multilingual
- English, French, Spanish, Russian (UI + content)

## Authentication

### Free Access
- No registration required for first test on free models

### Authenticated Access
- Session tokens via NextAuth.js
- API key support for external clients (Roo Code, Cursor, Claude Code, etc.)
- GitHub, Google, Discord OAuth providers

## Pricing

### Free Tier
- Various free models
- Low rate limit

### Premium Plans
- Lite from $4/month (20 premium messages/3h)
- Starter from $8/month (40 premium messages/3h)
- Pro $15/month (50 premium messages/3h, unlimited free models, custom LoRA)
- Image generation included
- Full-Stack IDE included

## Key Pages

- Chat (main app): https://chats-llm.com/en/chat
- Free LLM Chat: https://chats-llm.com/en/free-llm-chat
- ChatGPT Alternative: https://chats-llm.com/en/chatgpt-alternative
- Free AI Models: https://chats-llm.com/en/best-free-ai-models
- AI Chat Comparison: https://chats-llm.com/en/ai-chat-comparison
- Model Pricing: https://chats-llm.com/en/pricing-chat
- Blog (AI news, tutorials, model guides): https://chats-llm.com/en/blog

## Documentation & Resources

- User Guide: https://chats-llm.com/en/user-guide
- API Guide: https://chats-llm.com/en/user-guide/api-guide
- Context7 Guide: https://chats-llm.com/en/user-guide/context7
- How to Prompt: https://chats-llm.com/en/user-guide/how-to-prompt
- IDE/Full-Stack Mode: https://chats-llm.com/en/user-guide/fullstack-mode
- MCP Guide: https://chats-llm.com/en/user-guide/mcp
- RAG Guide: https://chats-llm.com/en/user-guide/rag
- Image Generation: https://chats-llm.com/en/user-guide/image-generation
- Memory Guide: https://chats-llm.com/en/user-guide/memory
- BYOK Guide: https://chats-llm.com/en/user-guide/byok
- PWA Guide: https://chats-llm.com/en/user-guide/pwa

## Support

- GitHub: https://github.com/cobra91
- Contact: https://chats-llm.com/en/contact
- Blog: https://chats-llm.com/en/blog