Outlier
formerly Outlier AIOutlier is an artificial intelligence company in San Francisco, United States, founded in 2023. It has raised $28.3M across 2 rounds, most recently a $22.1M Series B in January 2020.
Train the Next Generation of AI as a Freelancer
- Headquarters
- San Francisco, California
- Employees
- 10001+
- Founded
- 2023
- Business Model
- Marketplace
- Website
- outlier.ai
- Total Funding
- $28.3M
- Last Round
- $22.1M Series BJan 2020
- Rounds
- 2
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
Indexed holds 2 funding rounds and 9 investors for this company. The full record is or through the API.
About
Outlier is an AI training platform operated by Scale AI that connects domain experts — including MAs, PhDs, and college graduates — with leading AI companies to provide high-quality human feedback that improves large language models. Contributors complete tasks such as writing challenging prompts, creating grading rubrics, and rating AI-generated responses across fields including coding, STEM, languages, and law. The platform has paid out over $500 million to more than one million experts across 50 countries, operating with full schedule flexibility and no minimum hour requirements. Outlier serves as a key pipeline for RLHF data used by major AI labs.
Summary
It lists 10001+ employees. It has raised $28.3M in total across 2 rounds, most recently a $22.1M Series B round in Jan 2020. Investors include Scale AI, Emergence Capital and Ridge Ventures.
Tech & App Stack
3 technologies & apps tracked
Every product and vendor across these categories, with where each signal came from.
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Funding & Exit History
2022 (est.)
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Funding: Series A through Series B. Amounts, valuations, and investors where available.
Investors
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