Human data for AI

Human data & data annotation services that make your AI models better.

Data collection, data annotation services, audio transcription and LLM fine-tuning (RLHF & SFT) — plus consent-backed voice data and STEM-trained experts, delivered at scale by an ISO 9001:2017 team.

AI AnnotationVoice dataCollectionRLHFSME trainersLocalization
Voice & speech data

Consent-backed voice data in 25+ languages.

Multilingual speech collection, transcription and dubbing — every dataset built on explicit consent, metadata-tagged and QA-audited end to end.

HindiSpanishArabic+22
Annotation & model training

Precise annotation and model-ready feedback.

From bounding boxes to 3D point clouds, RLHF preference data to LLM evaluation — accuracy delivered through a four-stage QA workflow.

car pedestrian traffic light
ISO 9001:2017 25+ languages Invoiced only on approved work
350+
Global clients
700+
Experts & SMEs
2M+
Data assets delivered
25+
Languages supported
What we do

The full data pipeline for building AI — from data collection to LLM fine-tuning

From data collection and data annotation services to audio transcription and LLM fine-tuning — one accountable partner across every data type, language and domain your models need.

Data Collection

Sourced and captured to spec, with compliance and consent built in from the first file.

  • Image & video capture
  • Speech & audio, multilingual
  • Text & document sourcing
  • Sensor, in-cabin & road/ADAS data
  • Medical, legal, finance, retail & education
Discuss a collection

Data Annotation & Labeling

Pixel-, frame- and token-level accuracy across every modality, run through a four-stage QA workflow.

  • Bounding boxes, polygons & key-points
  • Semantic & instance segmentation
  • 3D point cloud / LiDAR
  • Video object tracking
  • Text & NLP: NER, sentiment, intent
  • Content moderation
See data annotation services

Voice & Speech Data

Our signature capability: consent-backed voice datasets, end to end from artist onboarding to QA.

  • Consent-backed voice datasets
  • Multilingual speech, 25+ languages
  • Transcription for ASR
  • Dubbing, subtitling & voice-over
  • Accent & dialect tuning
Build a voice dataset

Audio Transcription

Accurate audio transcription services for ASR training and evaluation, across accents and 25+ languages.

  • Verbatim & clean-read transcription
  • Speaker diarization & timestamps
  • Accent & dialect coverage
  • Domain audio: medical, legal, finance
See audio transcription

Generative AI & LLM

Human feedback and subject-matter depth to align, evaluate and fine-tune your models.

  • RLHF & preference data
  • Supervised fine-tuning (SFT)
  • Prompt engineering
  • LLM evaluation & red-teaming
  • STEM & domain SME trainers
  • Fine-tuning & optimization
Explore LLM services

Language & Localization

Deep Indic plus major Asian and European coverage for truly multilingual AI.

  • Translation & localization
  • Interpretation
  • Transcription
  • Transcreation
  • Proofreading & QA
See languages

Specialized Workforce

A vetted expert bench you can scale into — human-in-the-loop where it matters most.

  • SME network: STEM, medical, legal, finance
  • Crowd / workforce as a service
  • Data validation & quality review
  • Technical AI experts (Python, TensorFlow, PyTorch, NLP)
Augment your team
How the work looks

Built to show, not just tell

A closer look at the data our teams produce every day.

Global, multilingual collection

We source and capture image, video, speech and text data across regions and languages — with compliance and explicit consent designed in from the start.

Start a collection

RLHF & preference feedback

Human raters compare and rank model responses so your model learns what good looks like — with STEM and domain experts on the hard prompts.

Explore LLM services
Prompt · Explain gradient descent
Response A Preferred
Response B

3D point cloud & LiDAR

Segmentation and object labels on 3D point clouds for autonomous driving, robotics and spatial AI — depth-accurate and QA-checked.

See annotation
vehicle road
Why Graveiens

Enterprise-grade quality, without enterprise-grade risk

We pair a compliance-first design with a pricing model that lets you try us on real work before you commit budget.

About our team

Consent-first & compliant

Explicit-consent onboarding, metadata tagging and an audit trail on every program.

Four-stage QA

Create, internal review, client review and rework loops — backed by ISO 9001:2017.

Pay for approved work only

You are invoiced for approved deliverables — pilots are close to zero-risk.

STEM SME bench

Pedagogically trained subject-matter experts from our education heritage.

Where our data goes

Built for every AI use case

Model-ready data and human feedback for the systems teams are shipping today.

Trusted by leading AI labs, LLM companies and data platforms.

ISO 9001:2017 certified · consent-backed pipelines · invoiced only on approved deliverables

Start with a low-risk pilot

Send us a sample task — an annotation batch, a language voice set, or an RLHF run. You only pay for what you approve.

Book a pilot

Frequently asked questions

Common questions from AI teams evaluating Graveiens AI as a data partner.

What does Graveiens AI do?

Graveiens AI provides human-in-the-loop data services for AI teams: data collection, data annotation and labeling, consent-backed multilingual voice data, transcription, LLM fine-tuning (SFT and RLHF) and LLM evaluation. The company is ISO 9001:2017 certified.

What data types and modalities do you support?

We work across text, image, video and audio in 25+ languages — covering data collection, annotation and labeling, transcription, and model-ready human feedback.

How does your pricing work?

Pilots and projects are billed only for approved deliverables. Files pass internal QA and client review, and you are invoiced only for the files you approve — which keeps pilots near zero-risk.

Which languages do you cover?

25+ languages, with deep Indic coverage plus major Asian and European languages, for multilingual voice data, transcription and localization.

Is your voice data consent-backed and compliant?

Yes. Voice datasets are built with explicit artist consent, metadata tagging and QA audit trails, delivered under an ISO 9001:2017-certified workflow.

How do we start a pilot?

Share your task, target language(s) and volume. We scope a sample batch, deliver it through our QA workflow, and you approve the deliverables before scaling.