# Haystack

> Haystack is deepset's Apache-2.0 LLM framework first released in 2020; version 3.0 moved agent orchestration (tool-execution loop, state and streaming) into the core haystack-ai package and removed ToolInvoker, while enterprise security features stay in deepset's commercial platform.

deepset's production LLM framework; v3 adds agent loops and tool execution.

- **Category:** Runtime & Orchestration
- **License:** Apache-2.0
- **Language:** Python
- **Self-hosted:** Yes
- **GitHub stars:** 26646 (2026-10-04)
- **Repository:** https://github.com/deepset-ai/haystack
- **Last verified:** 2026-10-04

Source: https://agent.c8.fit/tools/haystack/