Do you sell AI governance or compliance software?Founding Vendor Placement — $499 for 12 months →
EU AI Act · Article 4 active · Article 50 from 2 Aug 2026 · high-risk rules transition through 2027–2028
AI Act Navigator
Directory/Vectara (HHEM Hallucination Engine)
Editorial review required

SOFTWARE INTELLIGENCE PROFILE

Vectara (HHEM Hallucination Engine)

AI Evaluation & Testing

GenAI platform hosting the open Hughes Hallucination Evaluation Model (HHEM) for measuring factual consistency in RAG outputs.

Visit official website ↗ Compare tools
HeadquartersSan Jose, USA
Starting price$0 / $99/mo
Last verified8 Oct 2026Editorial review required
Source evidence2 recordsAutomated monitoring
PROFILE SNAPSHOT

What this platform provides

2 source records available

GenAI platform hosting the open Hughes Hallucination Evaluation Model (HHEM) for measuring factual consistency in RAG outputs.

PROVIDERDEPLOYER$0 / $99/mo

Visit official website ↗

CUSTOMER FIT

Deployment & technical profile

Hosting / residency signalUS-Hosted
DeploymentCloud API / High-Performance Endpoint
APIAvailable
Python SDKAvailable
On-premiseNot recorded
Customer fitDevelopers Integrating RAG Pipelines Requiring Real-Time Hallucination Scoring

Recorded export formats: HHEM Score Response, JSON

PROFILE QUALITY

Profile completeness & evidence signals

99/100 completeness
Evidence completeness100%
Technical readiness signalStrong
Requirement mappings2
Editorial stateReview required

These are transparent catalogue signals used for discovery and prioritisation. They do not establish legal compliance, procurement suitability or endorsement.

CAPABILITIES

Operational capabilities

testing-monitoringai-transparency
REGULATORY MAPPING

Relevant compliance capabilities

These are Navigator's recorded capability mappings, not a statement that the vendor itself makes an AI Act compliance guarantee.

  • Article 15 (System Accuracy & Reliability)
  • Supporting capability — output controls and evaluation

Recorded active / current scope

  • Hughes Hallucination Evaluation Model (HHEM) Verification

Recorded prepare / transition scope

  • Article 15 Continuous Factual Accuracy Audits
LIMITATIONS

Recorded limitations

  • RAG and hallucination evaluation tool; does not generate legal Annex IV dossiers
ASSURANCE SIGNALS

Evidence & standards

Labels below are separated by evidence type. A standard, framework, product capability or hosting note is not presented as a certification.

Certifications & attestations

SOC 2 Type IIISO 27001

Standards & frameworks

No standards/framework evidence recorded.

Other recorded evidence

No other evidence labels recorded.
Verification methodTechnical Documentation Review
ConfidenceHigh
Source records2
PROVENANCE

Evidence trail

Editorial review required

Automated monitoring records source availability and change signals. Non-material changes may be automatically assured; material regulatory, certification, commercial or technical changes remain subject to editorial confirmation.

  • Human review required — https://www.vectara.com/ (checked 2026-10-09)
View recorded source URLs
Editorial & legal scope

This profile is informational and based on source information recorded in the Navigator dataset. “Source-checked” describes the Navigator's editorial/data process; it is not a legal certification, conformity assessment, endorsement, or guarantee of regulatory compliance.

Framework reference: Regulation (EU) 2024/1689 · Profile reviewed: 8 Oct 2026

Read the methodology →