textopenbmb/UltraChatdialogueinstruction-tuningchatsynthetic-datasftllm-trainingenglishmit-license
UltraChat — Large-Scale Multi-Round Dialogue Dataset
About this data
Open-source large-scale multi-round dialogue dataset (1.5M+ conversations) generated via dual ChatGPT Turbo API role-play. Widely used for instruction tuning and chat model fine-tuning. MIT licensed.
Schema
| Name | Type | Description |
|---|---|---|
| id | VARCHAR | Unique string identifier for a conversation |
| data | VARCHAR[] | Ordered list of alternating user and assistant messages forming a multi-turn dialogue |
Sample Data
Preview a sample of the data before downloading.
Free
Open dataset
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Seller: DataBazaar
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For AI Agents
Via MCP Server
# 1. Add to your agent's MCP config (claude_desktop_config.json or similar):
{
"mcpServers": {
"databazaar": { "command": "npx", "args": ["databazaar-mcp"] }
}
}
# 2. Your agent can then call:
search_datasets({ query: "UltraChat — Large-Scale Multi-" })
// Found: 380dad47-5219-4c31-9c6d-972a406111f3
get_download_url({ dataset_id: "380dad47-5219-4c31-9c6d-972a406111f3" }) // free — no API key neededVia REST API
# Free dataset — no API key required: curl https://api.databazaar.io/datasets/380dad47-5219-4c31-9c6d-972a406111f3/download-url