Haystack
deepset
LLM pipeline and retrieval orchestration framework rebranded toward the Haystack Enterprise Platform story.
Curated by Tiberiu ArvaStale
Strengths
- Mature pipeline patterns
- Strong retrieval orientation
- Production-oriented evaluation tooling
Practitioner note
Strong option when retrieval pipelines and modular backend orchestration matter more than no-code UX or broad business-user automation.
Governance posture
Reviewed 2026-05-26Python library runs in-process on customer infrastructure; no vendor data handling.
SourceOSS library self-hosted (Docker/K8s/VMs); deepset offers a managed Enterprise Platform. (self-hosted, on-prem)
SourceOSS library has no built-in audit log; operators integrate their own.
OSS library N/A; the deepset-managed Haystack Enterprise Platform holds SOC 2.
SourceOSS library N/A; the deepset Enterprise Platform holds ISO 27001.
SourceNot mentioned in Haystack/deepset public compliance documentation.
OSS pipeline framework, not an AI model/provider. (role: not-applicable)
Apache-2.0 — permissive, OSI-approved. (low)
SourceEU AI Act obligations
Risk tier: Not applicable · as of 2026-08-23Source-backed information mapped from Haystack's tracked risk tier — not legal advice. Obligations depend on how your organisation deploys the system; see the full obligation reference and timeline.
This record's EU AI Act risk tier is marked not applicable, so no tier-specific obligations attach. Deployers embedding it in an AI system in scope of the Act should assess that system's own tier.
Change history
Source-backed and auto-detected events for this tool, newest first.
- ReleaseHigh impact
Haystack 3.0 introduced intentional breaking changes alongside agent hooks and skills, run introspection, first-class async serving, a leaner core, and safer pipeline loading.
Haystack v3.0.0 - ReleaseHigh impact
Haystack 2.31.0 began moving components out of core into dedicated packages ahead of 3.0.
Release v2.31.0 · deepset-ai/haystack - Release
Haystack 2.30.2 fixed Agent exit behavior so invalid or discarded tool calls no longer cause premature termination under the default text exit condition, allowing the agent loop to recover on the next iteration.
Release v2.30.2 · deepset-ai/haystack - ReleaseHigh impact
Haystack 2.28.0 introduced breaking API changes around request exception handling, LLM initialization, and agent invocation signatures, with new runtime State injection for tools.
Release v2.28.0 · deepset-ai/haystack · GitHub - ReleaseHaystack simplifies multi-input pipelines with automatic list joining
Haystack's April 1 release highlighted automatic list joining inside pipelines, simplifying multi-input workflow construction without extra glue components.
Releases · deepset-ai/haystack - Auto-detectedgithubStars: 25865 → 26107
From snapshot diff 2026-07-17 → 2026-08-04.
- Auto-detectedlastRelease: 2026-07-08 → 2026-07-20
From snapshot diff 2026-07-17 → 2026-08-04.
- Auto-detectedversion: 2.31.0 → 3.0.0
From snapshot diff 2026-07-17 → 2026-08-04.
- Auto-detectedgithubStars: 25472 → 25865
From snapshot diff 2026-06-07 → 2026-07-17.
- Auto-detectedlastRelease: 2026-05-12 → 2026-07-08
From snapshot diff 2026-06-07 → 2026-07-17.
- Auto-detectedversion: 2.29.0 → 2.31.0
From snapshot diff 2026-06-07 → 2026-07-17.
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