Labelbox vs Nebius Group

Labelbox — Infrastructure · Private · $189M raised · 2 of 2 figures sourced  |  Nebius Group — Infrastructure · Public · $61.6B mkt cap · 4 of 4 figures sourced

Relationship

Alignerr and Managed Service for MLflow do comparable work on model training; both also serve buyers who need to train or fine-tune a model; similar scale (public).

Assembled from the recorded fields for this pair, not hand-checked. The comparison below is read from each company’s own profile.

3 of 8 capabilitiesShared product type

3 of 8 capabilities — Shares evaluation and observability, model inference and model training.

Ludbee capability tags · from the product records

Shared product type — Both ship developer tool.

Ludbee product records

Aligned comparison

FieldLabelboxNebius Group
Size$189M raised$61.6B mkt cap different basis
Employees—1,543
Founded20182024 6 yrs later
StatusPrivatePublic
CategoryInfrastructureInfrastructure match
Stack layerAgent platform, Application, Data service, Developer tool, PlatformDeveloper tool, Infrastructure service, Model API
HeadquartersSan Francisco, USAAmsterdam, Netherlands

Capability overlap

Shared · 3

Evaluation and observabilityModel inferenceModel training

Not verified for Nebius Group · 5

Agent orchestrationData analysisData labellingVector searchWorkflow automation

Recorded for Labelbox. Nebius Group’s product records say nothing either way — a missing record is not a missing capability.

Not verified for Labelbox · 2

GPU cloudModel hosting

Recorded for Nebius Group. Labelbox’s product records say nothing either way — a missing record is not a missing capability.

Products, side by side

Algorithmic pairing — assembled from recorded fields, not hand-checked

Labelbox

Developer tool

Labelbox FoundryDeveloper tool

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.

Nebius Group

Developer tool

Managed Service for MLflowDeveloper tool

Fully managed MLflow deployment on Nebius AI Cloud for tracking experiments, metrics and artifacts across the machine-learning lifecycle without maintaining tracking-server infrastructure.

No counterpart

Labelbox sells these in a stack layer with no product recorded for Nebius Group yet — nothing on the other side to compare them against.

Application

AnnotateApplication

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.

CatalogApplication

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.

Agent platform

RecursionAgent platform

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.

Platform

HorizonPlatform

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.

Data service

AlignerrData service

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.

TerraData 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.

Nebius Group sells these in a stack layer with no product recorded for Labelbox yet — nothing on the other side to compare them against.

Infrastructure service

Managed SoperatorInfrastructure service

Nebius-managed Kubernetes operator that runs Slurm clusters on GPU infrastructure for fault-tolerant large-scale AI training, with topology-aware scheduling and automatic node health checks and recovery.

Nebius AI CloudInfrastructure service

Rented GPU clusters with storage and networking for training and serving models, billed by the GPU-hour.

Serverless AIInfrastructure service

Nebius AI Cloud's on-demand GPU runtime that runs containerised AI workloads as Jobs and hosts custom models behind HTTP Endpoints without provisioning or managing clusters.

Model API

Nebius Token FactoryModel API

Managed inference endpoint serving open-weight models on Nebius hardware, billed per token.