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Data Labeling Solutions / Speech & Audio Labeling

Find Expert Speech and Audio Annotators for Any Tool

Post a job and hire transcriptionists, diarization specialists, and QA reviewers who work inside your existing labeling platform. Transcription, speaker labeling, audio event tagging, and more across any language or domain. 100,000+ pre-vetted specialists.
OpenTrain project dashboard for speech and audio labeling showing pending and approved payouts with hired AI trainers specializing in English transcription, French speaker diarization, and Mandarin emotion detection.
The easiest way to hire specialized speech and audio annotators, from transcriptionists to diarization experts.
Transcribers to QA Reviewers
Transcriptionists, diarization specialists, QA reviewers, and domain experts for any audio project
Any Platform
Specialists work inside any annotation tool or custom internal environment you provide
Any Audio Task
Transcription, speaker diarization, audio event tagging, and more across any language or domain
All-In-One

One Place to Hire and Manage Your Audio Labeling Team

Everything you need to build a team that delivers accurate annotations, precise labels, and production-ready training data for speech recognition, audio classification, music AI, and more.

The #1 Network for Audio Labeling Talent

Transcriptionists, diarization specialists, audio taggers, QA reviewers, and domain experts for any audio project. Music, speech, environmental sounds, and more. Find the right people for any use case.
Post an Audio Labeling Job
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OpenTrain shortlist showing vetted speech and audio labeling experts from Spain, the US, and Nigeria with specializations in transcription, speaker diarization, and sound events available for hire with hourly rates.

Invite Hires Into Any Audio Labeling Tool

Annotators work inside any labeling tool or your internal environment. You control access and permissions. Your data never leaves your systems.
Post an Audio Labeling Job
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OpenTrain workspace showing shortlisted speech and audio labeling experts from France and Australia specializing in French and English transcription and podcast segmentation ready to invite into Label Studio or your custom tool.

Communication and Project Hub

Built-in chat, instruction editor, and everything you need to coordinate audio labeling across distributed teams. Share annotation guidelines, run calibration sets, and manage QA in one place.
Post an Audio Labeling Job
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OpenTrain project hub for speech and audio labeling showing shared instructions editor and team chat channel with 55 members.

Secure Global Payments and Transparent Pricing

Pay Data Labelers in any country from a single dashboard. You set the rates, we add a small fixed fee on top. No hidden costs, no chasing invoices.
Post an Audio Labeling Job
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OpenTrain escrow payment interface showing funded milestone for speech and audio labeling units with per-unit pricing and Stripe release button.
OpenTrain job posting interface for speech and audio labeling showing tool selection and option to invite all qualified AI trainers.
Why OpenTrain

Hire Speech and Audio Annotators for Any Audio Labeling Task

Post a job and get a shortlist of qualified transcriptionists, diarization specialists, and QA reviewers ready to work in any labeling tool or internal platform. Hire for:
Verbatim transcription with word-level or segment-level timestamps and non-speech markers
Speaker diarization for multi-speaker recordings like meetings, calls, and interviews
Speech segmentation for clean boundaries between speech, silence, and background noise
Audio event tagging for non-speech sounds like alarms, machinery, and environmental audio
Transcription QA and review for consistency checks across annotators and sessions
How It Works

How OpenTrain Works for Speech and Audio Labeling

Create your account, post a job, and hire specialists who work inside your existing platform.
01
Post a Speech and Audio Job
Describe your project and the skills you need. Receive proposals from transcriptionists, diarization specialists, and QA reviewers with proven experience in audio annotation.
02
Hire and Add to Any Annotation Platform
Review candidates, make your hires, and invite them to any labeling tool or your internal environment.
03
Communicate and Pay in One Place
Share transcription guidelines and style guides, message your team, and handle global payments from a single dashboard.

Post Your Speech and Audio Labeling Job Now

Create an account and post your first job in minutes.
Post an Audio Labeling Job

Large Project? We Can Help.

Get a dedicated team managed end-to-end for large audio labeling projects.
Get a Managed Service Quote
Get Started

Start Building Your Speech and Audio Labeling Team Today

Post your first job and connect with transcriptionists, diarization specialists, and QA reviewers who work inside any labeling tool or your own internal platform.
OpenTrain workspace dashboard for speech and audio labeling showing 83 hired AI trainers, 24 completed projects, and team members specializing in English podcast segmentation, Hindi call center audio, and Korean subtitle timing.
Abstract audio waveform visualization with vertical bars representing sound frequencies and speech patterns.
Metrics

Where Voice AI Teams Hire Speech and Audio Annotators at Scale

The largest network of transcriptionists, diarization specialists, and QA reviewers, ready to work in any labeling tool or custom environment.
100K+
pre-vetted AI training specialists
50+
domains and specializations
24 hrs
avg. time from job post to production start
FAQ

FAQs about Hiring for Speech and Audio Labeling

Quick answers to common questions about audio annotation and transcription on OpenTrain.

You can hire transcriptionists for verbatim or clean-read transcription, diarization specialists for multi-speaker labeling, QA reviewers for verification and consistency checks, and domain experts for specialized terminology like medical, legal, or call center audio. Post a job describing your needs and receive proposals from specialists with relevant experience.

Specialists can perform transcription with word-level or segment-level timestamps, speaker diarization for multi-speaker recordings, speech segmentation, audio event tagging for non-speech sounds, and voice quality evaluation for TTS. You define the transcription style, timestamp granularity, and quality requirements in your job post.

Yes. Our network includes native speakers across dozens of languages and regional dialects. You can hire specialists for multilingual projects, code-switching audio, and accent-specific transcription. Specify your language requirements in your job post to receive proposals from qualified specialists.

Annotators work inside your environment. You control access by inviting them to your labeling tool or internal platform. OpenTrain does not require access to your data or systems. Most teams use project-based permissions, and annotators can sign NDAs or complete security reviews before onboarding.

You set your own rates and negotiate directly with specialists. Rates vary by task complexity, language, domain expertise, and timestamp requirements. General transcriptionists typically charge less than diarization specialists or domain experts. OpenTrain charges a platform fee on top of what you pay specialists. Contact us for volume pricing on large projects.

Our managed service handles everything: team assembly, onboarding, guideline development, calibration sets, QA passes, and delivery of verified transcripts and annotations. We manage the annotators so you can focus on your models. Ideal for large-scale projects, tight deadlines, or teams without internal annotation ops. Contact us for a managed service quote.

Integrations

Hire for Any Audio Labeling Platform or Internal Tool

Hire speech and audio annotators on OpenTrain, then invite them to any labeling tool or your own internal environment.
Get Started

Join the #1 Platform for AI Training Talent

Where top AI builders and expert AI Trainers connect to build the future of AI.
Self-Service
Post a Job
Post your project and get a shortlist of qualified AI Trainers and Data Labelers. Hire and manage your team in the tools you already use.
Managed Service
For Large Projects
Done-for-You
We recruit, onboard, and manage a dedicated team inside your tools. End-to-end operations for large or complex projects.
For Freelancers
Join as an AI Trainer
Find AI training and data labeling projects across platforms, all in one place. One profile, one application process, more opportunities.