micro1

What is micro1?

micro1 is a human data company that sells expert-made training data, reinforcement learning environments and agent evaluations to AI labs and enterprises. Its official site now calls it a data lab to train frontier models and evaluate agents. The original product, an AI recruiter named Zara, still runs structured video interviews that screen the experts who produce this data, and directories continue to list Zara as a self-serve hiring tool.

micro1 was founded in 2022 by Ali Ansari, who started it as a Berkeley undergraduate, according to Stock Analysis and AI Trainer. It raised a $35 million Series A at a reported $500 million valuation in September 2025, led by 01 Advisors. AI Trainer reported in September 2026 that its gross run rate had grown from $100 million to $500 million in eight months. In October 2026 the site was live with Realm, Cortex and Robotics as headline products.

Key Features

• Zara AI recruiter: micro1’s Zara runs proctored 20 to 30 minute video interviews that screen candidates for expert and engineering roles. AI Trainer reports about 3 million interviews since launch, with roughly 20% of applicants accepted.
• Realm RL environments: micro1 Realm builds reinforcement learning environments that mirror real-world tasks to generate human data for agentic AI. Yes Press says it covers frontier evaluations and human-in-the-loop production across more than 100 fields.
• Cortex agent evaluation: micro1 Cortex evaluates and monitors AI agents in production using real workflows and expert judgement. The company describes a four-stage contextual evaluation loop aimed at improving agent performance after deployment.
• Robotics data: micro1 supplies high-fidelity real-world robotics data, including demonstrations, multimodal capture and annotation, for embodied AI. AI Trainer reports this unit reached $100 million in annual recurring revenue within nine months.
• Vetted expert network: micro1 recruits domain experts in coding, medicine, law, finance and more, then pays them to create and review datasets. Contractors are paid biweekly through Deel, according to AI Trainer’s platform review.
• Flow and Merit tools: micro1 runs Flow, a workspace where experts build and review datasets, and Merit, a dashboard tracking quality, speed and error rates. Both are described by Yes Press as part of the data engine.
• Anti-cheat proctoring: micro1 pairs Zara with an integrity system called Ava that watches eye movement, tab switches and browser extensions during technical tests. AI Trainer reports a minimum integrity score of 70% is required.
• Public benchmarks: micro1 publishes evaluation benchmarks on its site, including CortexRetrievalBench for financial research retrieval. Others cover legal reasoning and pathology report reasoning, giving buyers a view of its evaluation methods.

Pros

• Large screened talent pool: micro1 screens a few thousand candidates every day through Zara, according to AI Trainer. AI labs get access to experts who have already passed structured interviews and skills tests.
• Evidence behind AI screening: micro1 cites a study of 37,000 junior developer applicants in which 54% of Zara picks passed final interviews. The résumé-screen control group managed 34%, as reported by Yes Press.
• Broad domain coverage: micro1 sources experts across more than 100 domains, from software engineering to healthcare and law. One supplier can therefore cover coding, medical and legal datasets for the same model.
• Strong user ratings: micro1 holds 4.9 out of 5 from 1,011 reviews on GetApp in October 2026. Reviewers often mention clear instructions, quick support and a merit-based process open to remote workers.
• Fast-growing supplier: micro1 has grown quickly, with a reported $500 million gross run rate in September 2026. Buyers get a vendor with the scale to staff large projects, though figures are press reports, not audited.
• Competitive expert pay: micro1 listings show a median rate of $70 an hour across 367 roles tracked by AI Trainer. Legal and healthcare specialists see higher medians, which helps attract qualified contributors.

Cons

• No public pricing: micro1 does not publish prices for Realm, Cortex or robotics data on its official site. Buyers must contact sales, and eesel reports custom projects ranging from $20,000 to over $60,000.
• Zara plans hard to confirm: micro1’s $89 and $399 Zara interview plans appear on GetApp and eesel but not on the current official site. Hiring teams should confirm the self-serve offer still exists before budgeting for it.
• Placement waits for experts: micro1 certification takes one to two days, but placement can take up to 30 days with no guarantee, says AI Trainer. Some candidates pass Zara and never receive paid work.
• Candidate data terms: micro1’s terms grant broad, perpetual rights to candidate data, images and voice recordings, according to eesel. Applicants who care about privacy should read the terms before recording an interview.
• Mixed contractor feedback: micro1 draws complaints about low or inconsistent pay and laggy AI interviews in some GetApp reviews. AI Trainer also notes that only 3% of Trustpilot reviews were unprompted, averaging 3.3 stars.
• Country restrictions: micro1 limits work to the US and allied countries, a policy announced in January 2026. AI Trainer lists about 20 excluded nations, so some experts cannot join regardless of skill.

Who is Using micro1?

• Frontier AI labs: buy expert-written data and RL environments to train models.
• Enterprise AI teams: evaluate production agents with Cortex and expert reviewers.
• Robotics companies: source demonstration and multimodal data for embodied systems.
• Domain experts and engineers: apply through Zara to earn hourly pay on AI projects.

Pricing

micro1 sells its data products on custom quotes, while directories still list Zara interview plans from $89 a month (official site and GetApp, checked October 2026).

The Zara plans come from GetApp and an eesel article last edited in August 2026, and they did not appear on micro1’s own site when we checked. Enterprise terms depend on scope and volume, so ask sales for a written quote before planning a data project.

What Makes micro1 Unique?

Expert recruiting and data production sit inside one company at micro1. Zara interviews thousands of applicants a day, and the people it accepts go straight into Realm, Cortex and robotics projects. Most data labelling vendors source workers through agencies or open marketplaces. micro1 instead built its own AI recruiter first, which gives it a screening funnel that feeds its training data business directly.

Compatibilities and Integrations

• Platforms: Web-based client platform, expert workspace and browser-based Zara interviews.
• Hiring integrations: Slack, LinkedIn Jobs and 50+ ATS integrations for Zara, as listed on GetApp.
• Payments: Expert contractors are paid biweekly through Deel.
• Data outputs: Datasets, RL environments, evaluation reports and robotics demonstrations delivered to client teams.

micro1 Tutorials

Getting started with micro1 depends on whether you are buying data or offering your expertise.

1. Visit micro1.ai and choose Get in touch if you need data or evaluations, or Join as an expert to apply.
2. Clients describe the domain, task type and volume so the team can scope a Realm, Cortex or robotics project.
3. Experts upload a résumé and answer written questions for an open role.
4. Experts then complete the proctored Zara video interview, including live coding for technical roles.
5. Accepted experts wait for project placement and are paid biweekly through Deel.

How We Rated It

Summary

micro1 suits AI labs, enterprise AI teams and robotics companies that need vetted human experts to produce training data and evaluations, as well as experts looking for hourly AI work. Its main limitation is opacity, since enterprise pricing is quote-only and the older Zara plans are hard to confirm on the official site. Candidates also face long placement waits and broad data terms. Ask for a pilot project with clear quality metrics before committing to a larger contract.