AI training datasets: browse the off-the-shelf catalog

Off-the-shelf (OTS) AI training datasets are pre-collected, pre-licensed datasets that teams can license and use immediately for model training, fine-tuning, and evaluation, without commissioning a custom collection. Each dataset in Appen's catalog ships with a spec sheet documenting source, consent, annotation method, known limitations, and license terms.

596 datasets across eight categories, from reinforcement learning (RL) tasks and verifiers to speech, code, and enterprise data. All are collected under documented consent and licensing terms, with provenance records your legal and compliance teams can review.

Off-the-shelf vs custom AI training data

Choose off-the-shelf when: You need broad coverage of common categories, or extra volume to supplement custom data.

Choose custom when: You need specific demographics, acoustic environments, specialist domains, or a controlled collection protocol.

Combine both when: An off-the-shelf set covers the baseline and custom collection fills specific gaps.

Custom AI training data

Methodology

How Appen datasets are collected, licensed, and documented

Consent & licensing

Contributor consent and documented licensing. Perpetual, non-exclusive commercial training rights.

Provenance

Source, annotation method, collection year, coverage period, and limitations documented.

Annotation quality

Cohen’s kappa or Krippendorff’s alpha, with thresholds and adjudication protocols.

Governance

SOC 2 Type II, ISO 27001, GDPR/CCPA handling, EU AI Act documentation. 500+ locales.

Scope and timelines

Licensing scope, delivery formats, and timelines

Delivery

Day

Formats

WAV, FLAC, JSON, JSONL, COCO

Samples

Available under NDA

Extension

Add locales, demographics or conditions

How AI teams use Appen data

Connected-car speech recognition

10+ years of in-car speech collection across 20+ languages — so the OEM's engineers could launch voice recognition in new markets without building a linguistics team.

Read case study

FAQ

AI training data catalog: common questions

What is an AI training data catalog?

An AI training data catalog is an index of pre-collected, pre-licensed datasets available for immediate licensing, as distinct from a custom collection program built to your specification. Appen's catalog holds 596 datasets across eight categories.

Can I license Appen datasets for commercial model training?

Yes. The standard license is perpetual and non-exclusive with commercial training rights. License type is listed on each dataset's spec sheet.

How is off-the-shelf training data different from custom data collection?

Off-the-shelf datasets cover common categories under standard conditions and deliver in days. Custom collection is used when a project requires specific demographics, controlled acoustic environments, or specialist domain coverage. Both run under the same governance framework.

What documentation comes with each dataset?

A spec sheet covering source and annotation method, year of collection, data coverage period, language coverage, quantity available, known limitations, license type, and refresh cadence.

Are the datasets ethically sourced?

All data is collected under explicit contributor consent with documented provenance. Appen is SOC 2 Type II and ISO 27001 certified and operates under GDPR and CCPA compliant handling.

Can I get a sample before licensing?

Yes. Representative samples are available under NDA for most cataloged datasets.

How many languages does the speech catalog cover?

The speech and audio catalog spans read, conversational, and contact-center recordings across a wide range of languages and accents. Filter the audio catalog by locale for current coverage.

How current is the data?

Refresh cadence is listed per dataset. RL task suites refresh quarterly; static corpora list their collection year and coverage period.

Need a specific dataset?

Tell us the modality, locale, and volume.

Talk to our team