Cleanlab
Acquired9 known investors
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Cleanlab develops machine learning tools for data quality and model improvement, serving enterprises and ML practitioners across industries. The company provides automated solutions for identifying and fixing data errors using confident learning technology.
Also known as Cleanlab
Founders & leadership
Investors · 9
Also in the syndicate · 1
Funding
SEC filings, press & company announcements$25M disclosed across 1 of 2 rounds · 2023
- $25MSeries AOct 2023 · 4 sources
Bain Capital Ventures (lead), Menlo Ventures (lead), TQ Ventures (lead), Databricks, Databricks Ventures
Source ↗ - Undisclosed amountSeedJul 2023Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
Company profile
researched Aug 2026Cleanlab offers software for making AI applications and agents reliable in production. Its product line covers two functions: detection, which automatically identifies and blocks poor AI responses using guardrails for hallucinations, retrieval errors, documentation gaps, policy violations and malicious use in real time; and remediation, which provides a human-in-the-loop workflow allowing non-technical staff to correct AI responses and fix issues in underlying knowledge bases.
The company positions its technology as an independent layer that works with any AI system and knowledge base, requiring no changes to a customer's existing stack. It is offered both as a SaaS service and as a VPC deployment inside the customer's own cloud. Cleanlab also publishes research and benchmarking work, including a benchmark on real-time error detection for LLM structured outputs and a case study on automated hallucination correction for AI agents using Tau²-Bench.
Business model
Cleanlab sells its detection and remediation software to organizations deploying AI agents, offered either as a managed SaaS product or as a privately deployed instance within the customer's own virtual private cloud. Prospective customers engage through a booked demo rather than self-serve signup.
Latest developments
Cleanlab's site features a letter from the CEO announcing that Handshake has acquired Cleanlab, alongside recent publications on real-time error detection for LLM structured outputs and automated hallucination correction for AI agents.
▸Full profile — market position, technology, go-to-market
Market position
Cleanlab cites third-party recognition including inclusion on an AI 50 list of most innovative AI firms, an AI 100 list of promising private AI companies, a listing among top AI hallucination detection tools by Analytics India Magazine, and the IJCAI-JAIR Best Paper Prize, all dated 2024. Andrew Ng has referenced "the Cleanlab stuff out of MIT" as a notable breakthrough in the field.
Cleanlab describes its offering as model- and stack-agnostic: it deploys as an independent layer over any AI system and knowledge base, combines automated real-time guardrails with a human-in-the-loop remediation workflow usable by non-technical teams, and supports both SaaS and customer-controlled VPC deployment.
Technology
Cleanlab applies real-time trust scoring and guardrails to AI outputs, flagging hallucinations, retrieval failures, knowledge-base gaps, policy violations and malicious use, and pairs automated detection with human oversight workflows for correcting responses and source documents. The company's research origins are associated with MIT.
Go-to-market
Direct sales motion led by demo requests from the company website, supported by a blog publishing company updates, tutorials and research and benchmark studies.
Startups and enterprises deploying high-stakes AI applications, with named use cases for customer-support AI agents and employee-facing internal AI agents. Buyers include customer support teams and subject-matter experts who refine AI answers without writing code.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
Founder mafia
3 people who came through Cleanlab went on to found or lead other companies.
Competitors · 2
by search overlap
Companies competing with Cleanlab for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline · 5
launches, deals, and filingsCleanlab's website features a post titled "Letter from the CEO: Handshake acquires Cleanlab," indicating the company was acquired by Handshake.
Listed among the most promising private companies applying AI across industries and around the world.
Listed among the 50 most innovative firms driving advancements and commercial applications in AI.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
▸Research sources · 1
primary sources listed
- Cleanlabcleanlab.ai · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Cleanlab do?
- Cleanlab provides a software layer that detects and remediates incorrect or unsafe outputs from AI agents.
- Who founded Cleanlab?
- Cleanlab was founded by Curtis Northcutt, Jonas Mueller, Anish Athalye, Anishathalye, Ulyana Tkachenko.
- Who are Cleanlab's investors?
- Cleanlab's investors include Menlo Ventures, Preston-Werner Ventures, Samsung Next, Tq Ventures Llc, AME Cloud Ventures, Bain Capital Ventures, Databricks Ventures, Essence Venture Capital.
- How much funding has Cleanlab raised?
- Cleanlab has disclosed $25M raised across 1 of its 2 known rounds.