# Hallo

**Canonical:** https://apis.io/providers/hallo/  
**Website:** https://www.hallo.ai/  
**APIs profiled:** 0

Hallo is an AI-powered language assessment and language-learning company backed by Battery Ventures. Its enterprise platform delivers automated, AI-driven proficiency assessments across speaking, writing, listening, and reading in 80+ languages, with CEFR-aligned scoring, detailed feedback (fluency, vocabulary, grammar, pronunciation, coherence), real-time score reports and dashboards, and proctoring / anti-cheating for high-stakes hiring, placement testing, and employee development. Hallo integrates with major applicant-tracking systems (Greenhouse, Ashby, Workday, SmartRecruiters, Lever, SuccessFactors, Recruitee, and others) and runs assessments across 160+ countries, with a stated SOC 2 Type 2, ISO 27001, GDPR, and EU AI Act compliance posture. The company also operates a consumer language-learning app with AI tutors and native-speaker practice. Hallo does not publish a public developer API or OpenAPI specification; its integration surface is delivered through prebuilt ATS connectors and enterprise onboarding rather than a self-serve developer portal.

## Kin Score — 21.6 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 21.6).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 7.1 |
| Commercial Clarity | 52.6 |
| Access Clarity | 52.6 |

Regulatory layer — **Education & Research**: 44.4 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Hallo Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Language Assessment, Language Learning, Artificial Intelligence, Recruiting, Human Resources, Education, Speech Recognition

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/hallo/). Scores are computed from the provider's own public artifacts under a published rubric.