think5.

Our platform

Three products. One intelligence platform.

Aria interviews, Nexus matches and Forge turns expertise into training data. Together they run recruiting for startups, enterprises and AI labs.

Aria Nexus Forge
01 AI interviewer

Aria

Every candidate, interviewed live.

An AI interviewer that runs structured technical and behavioural screens for every applicant — engineers, clinicians, analysts, site leads — in 50+ languages, in real time.

  • Adaptive follow-ups that probe depth, not keywords
  • Industry rubrics: IT, healthcare, finance, construction
  • Frontier-grade proctoring and anti-cheat detection
  • Scored reports and recordings you compare side by side
  • Multi-language support in 50+ languages
  • Candidates in 150+ countries, top 1% pass rate
Aria, Think5's AI interviewer
think5. 29:59

Hello! I'm Aria, Think5's AI interviewer. Welcome, I'm excited to get to know you. Could you briefly introduce yourself?

Recording
Candidate camera view You
1,000+
Daily interviews
150+
Countries
50+
Languages
1%
Acceptance rate
02 Matching engine

Nexus

The right person, on the right role, in 48 hours.

A matching engine that pairs candidates with roles on verified skills, Aria scores and availability — across startups, enterprises and AI labs.

  • Skill-to-role matching on interview evidence, not keywords
  • Credential and licence verification per industry
  • Comp benchmarks and availability built into the shortlist
  • 24–48 hour shortlist turnaround
  • Continuous quality scoring from real hiring outcomes
Nexus

Matches · Senior Backend Engineer

Ranked by fit
  • PN

    Priya Nair

    Staff engineer · ex-Stripe · Berlin

    Aria94
    96
  • DK

    Daniel Kim

    Senior backend · fintech · remote

    Aria91
    93
  • AO

    Amara Okafor

    Platform lead · payments · London

    Aria89
    90
  • LM

    Lucas Meyer

    Backend · distributed systems · Munich

    Aria87
    88
1,284 sourced · 412 Aria-screened · 9 shortlistedShortlist in 31h
96fit

Match rationale · Priya Nair

Weighted on the role brief · updated 2m ago

  • Skills, verified by Aria96
  • Experience fit92
  • Compensation alignment88
  • Availability & location100
Aria interview
94 · system design, depth
References
2 of 2 complete
Comp band
$195–220k · inside band
Start
4 weeks · notice served

Sourcing · live

+48today
BerlinLondonRemote EU
48h
To shortlist
4
Core industries
100+
Domains covered
99.7%
Quality score
03 Data operations

Forge

Expert intelligence, shipped as training data.

The data operations platform behind our AI training business: it turns the vetted expert network into RLHF, SFT, evaluation and red-teaming datasets for frontier labs.

  • RLHF data pipelines for frontier models
  • Supervised fine-tuning (SFT) workflows
  • Red-teaming and safety evaluations
  • Vision-language model (VLM) training data
  • Multi-modal dataset creation
  • Managed QA and delivery pipelines
Forge

RL environment · Clinical reasoning

Held-out eval
  • 1GPT-5
    72.4%+3.1
  • 2Claude Opus 4.7
    70.9%+2.6
  • 3Gemini 3 Pro
    66.2%+1.8
  • 4Open-weights baseline
    51.7%—
Trained on Forge batches 4,402–4,471Δ vs. crowd-sourced data

Run details · Batch 4471

Delivering

Items

3,120

QA pass

99.7%

Agreement

0.91

Experts

48 MDs

Expert QA · items 2,801–2,896

pass · review · flag

Throughput · items / hr

412

Expert QA · live

MDRNPhDMD
31

reviewing now · 3 of 3 must agree

10M+
Data points
99.7%
Quality score
24/7
Operations
6+
Data modalities

  • RLHF

    Reinforcement learning from human feedback

  • VLMs

    Vision-language training data

  • Reasoning

    Complex logical reasoning datasets

  • Multi-modal

    Cross-modal understanding data

  • SFT

    Supervised fine-tuning pipelines

  • Red teaming

    Safety and adversarial testing

Explore AI training data

Ready when you are

See the platform in action.

Talk to our team about expert talent, custom data operations or an enterprise partnership.

Book a demo Read the research