L

Labelbox

Infrastructure

Data engine for frontier AI: reinforcement-learning environments, robotics data, an expert network and an enterprise RL platform, alongside Annotate, where a customer's own team labels its own data.

Total funding$189M

Valuation—

Employees—

Founded2018

HeadquartersSan Francisco, USA

StatusPrivate

Products

Selected offerings — the AI products recorded here, not the vendor's full catalogue.

• Recursion Agent platform Sold on its own

  Labelbox's reinforcement-learning platform for developing, evaluating and deploying enterprise specialist agents, connecting RL environments, evaluation systems and a training loop that fine-tunes models from graded rollout trajectories.

• Horizon Platform

  Horizon supplies RL training gyms and evaluations for reasoning, tool use and computer use, using WorldSim to simulate enterprise environments such as GitLab, Jira, CRM, email and chat and to produce calibrated reward and preference signals for post-training.

• Terra Data service

  Terra is Labelbox's robotics data product delivering video, trajectories and multimodal annotations across pre-training, post-training and evaluation stages, including expert teleoperation with action labels and multiple camera perspectives for embodied foundation models.

• Alignerr Data service Sold on its own

  Alignerr is Labelbox's expert-network product that routes AI training and evaluation tasks to credentialed contributors across 200+ knowledge domains and 40+ countries and returns structured outputs for RL training, RLHF and evaluation workflows.

Inside Labelbox

• Catalog Application Included with the parent

  Catalog is Labelbox's data curation and search product providing out-of-the-box search across images, text, video, conversations and documents over metadata, vector embeddings and annotations without building your own vector database infrastructure.

• Annotate Application Included with the parent

  Annotate is the data labeling product within Labelbox, providing 10+ built-in editors for multimodal chat, LLM evaluation, prompt/response generation, computer vision and NLP, plus customizable labeling and review workflows and team performance monitoring.

• Labelbox Foundry Developer tool Included with the parent

  Foundry runs third-party foundation models over data already in Labelbox to pre-label and enrich image, text and document datasets without code, routing the predictions to human review; billed as inference cost per model run plus Labelbox Units.

Closest alternatives 1

EEncordPrivateCB Insights names Encord among Labelbox's top competitors; Encord's training-data platform overlaps Labelbox Terra's train-a-model need.6 of 8 capabilitiesShared product typeSourced competitorTrain or fine-tune a modelCompare

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How this list is ranked ↗

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Closest alternatives are pairs a vendor page itself compares. Similar products are matched from what each product does; nothing in that group is asserted as a rivalry.

Sources

Total funding

Official documentation · 4 Sep 2026

Its own about page states "$189M Funding to date" — the company's own cumulative figure, not an aggregator's.

Valuation

Checked — none published

No valuation published.

Employees

Not found · 4 Sep 2026

No headcount on the about page.

Founded

Official documentation · 4 Sep 2026

Its own about page: "Since 2018, Labelbox has pioneered data-centric AI."

Revenue

Checked — none published

Private; no revenue published.

Description

Official documentation · 6 Sep 2026

"Annotate is the data labeling platform within Labelbox. It allows your organization to label data with any human workforce at any scale", and explicitly "Rely on your own internal team of labelers to label your dataset." Our sentence denied the product that page documents.

Open Labelbox in the directory

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