Hanzo Chat features — presets, file uploads, RAG, search, vision, conversation import/export, bookmarks, and more.

Features

Hanzo Chat provides a full-featured AI chat experience. This page covers all major features available in both the hosted and self-hosted versions.

Multi-Model Chat

Switch between models mid-conversation or start new chats with any available model:

14 Zen Models — flagship, reasoning, code, vision, multimodal, edge, safety, embeddings

100+ Third-Party — OpenAI, Anthropic, Google, Meta, Mistral, Together, Groq

Model comparison — run the same prompt against multiple models side-by-side

Streaming — real-time token streaming for all models

Presets

Save and reuse conversation settings as presets:

Create presets from model settings (model, temperature, system prompt, top_p, penalties)

Import/Export presets as JSON files for sharing

Default preset — set a preset to load automatically for new conversations

Custom names — give presets display names for quick identification

Creating a Preset

Open model settings in a conversation

Configure model, temperature, system prompt, and parameters

Click Save As Preset

Name it and save — it appears in the preset menu

Preset Parameters

Parameter	Description
Model	Which model to use (e.g., `zen4`, `zen4-coder`)
Temperature	Controls randomness (0.0 = deterministic, 2.0 = creative)
Top P	Nucleus sampling — controls diversity of output
Frequency Penalty	Penalizes repeated tokens
Presence Penalty	Encourages new topics
System Prompt	Custom instructions prepended to every message

File Uploads & RAG

Upload files to conversations for context-aware responses using Retrieval-Augmented Generation:

Supported formats — PDF, DOCX, TXT, MD, CSV, JSON, code files, images

Document indexing — files are chunked, embedded, and stored in PGVector

Semantic search — relevant chunks are retrieved based on your messages

Reusable files — upload once, attach to any conversation via the side panel

Configurable — chunk size, overlap, and embedding model are all adjustable

How RAG Works

Upload a file to a conversation

Indexing — the RAG API chunks the document and creates embeddings

Retrieval — when you send a message, relevant chunks are found via semantic search

Generation — retrieved context is appended to your prompt for accurate responses

Configuration

# Required: embeddings provider API key
RAG_OPENAI_API_KEY=sk-...

# Optional tuning
EMBEDDINGS_PROVIDER=openai        # openai, azure, huggingface, ollama
EMBEDDINGS_MODEL=text-embedding-3-small
CHUNK_SIZE=1500
CHUNK_OVERLAP=100

Resend Files Toggle

By default, files are queried on every message. Toggle Resend Files off in conversation settings for targeted queries — retrieval only happens when files are explicitly attached to a message.

Vision & Multimodal

Analyze images directly in conversations:

Drag and drop images into the chat

Paste from clipboard — screenshots, diagrams, photos

Supported models — zen3-omni, zen3-vl, GPT-4o, Claude Sonnet/Opus, Gemini

Conversation Management

Persistent history — all conversations stored in MongoDB

Search — full-text search across all conversations via Meilisearch

Folders — organize conversations into folders

Bookmarks — bookmark important conversations for quick access

Import — import conversations from ChatGPT, other LibreChat instances, or JSON

Export — export conversations as JSON or Markdown

Conversation Import

Import conversations from:

ChatGPT — export from OpenAI and import the JSON

LibreChat — import from other instances

JSON format — standard conversation JSON

Search

Full-text search powered by Meilisearch:

Search across all conversation messages

Instant results with typo tolerance

Requires Meilisearch service (included in Docker setup)

# Enable search
SEARCH=true
MEILI_HOST=http://search:7700
MEILI_MASTER_KEY=${SEARCH_MASTER_KEY}

Code Artifacts

When models generate code, Chat provides:

Syntax highlighting for all major languages

Copy button for quick clipboard access

Code execution (when enabled) for Python, JavaScript

Diff view for code modifications

Keyboard Shortcuts

Shortcut	Action
`Enter`	Send message
`Shift+Enter`	New line
`Ctrl+/`	Toggle sidebar
`Ctrl+Shift+S`	Save as preset
`Ctrl+Shift+N`	New conversation

Multi-Language Support

Chat supports 50+ languages for the UI. Set the default language:

APP_LANG=en  # en, es, fr, de, ja, zh, ko, pt, ru, ar, ...

Theming

Dark mode — default, optimized for extended use

Light mode — available via settings

Custom CSS — override styles for self-hosted instances

Features

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