Sciloop

Expert-written datasets for AI labs: Olympiad medalists and other domain experts write math, physics and other hard problems that frontier models cannot yet solve, delivered with expert review as a continuous stream for training and evaluating models.

StageUndisclosed

Founded2025

HeadquartersSan Francisco, USA

StatusPrivate

Founded — ycombinator.com · 18 Oct 2026

sciloop.dev

Product

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

Sciloop datasets Data service

Custom datasets of expert-written hard problems with solutions and expert reviews, streamed to AI labs to a stated domain, difficulty, format and volume for model training and evaluation; no prices published.

Similar products 40

No sourced competitor yet: no filing, vendor document or measured-market report read so far names a rival for this company, so none is asserted. The companies below are the closest by what their products do.

How this list is ranked ↗

All 40Capability overlap 26Shared product type 23Same company status 32

VelvetUndisclosedSciloop datasets and Velvet datasets both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare A

AppenPublicSciloop datasets and Off-the-Shelf Datasets both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare P

PetrichorUndisclosedSciloop datasets and Petrichor both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare H

HumanSignalEarly-stageSciloop datasets and HumanSignal Services both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare T

TolokaUndisclosedSciloop datasets and Off-the-shelf Datasets both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare E

EncordUndisclosedSciloop datasets and Encord Data Annotation both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare SA

Surge AIBootstrappedSciloop datasets and Surge AI data platform both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare HA

Hume AIUndisclosedSciloop datasets and Data Solutions both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare T

TuringLate-stageSciloop datasets and Off-the-shelf datasets both list data labelling; both also serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded.1 of 1 capabilityShared product typeCompare SA

Scale AILate-stageSciloop datasets and Scale Data Engine both list data labelling; both also serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded.1 of 1 capabilityShared product typeCompare L

LabelboxLate-stageSciloop datasets and Terra both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare M

MercorLate-stageSciloop datasets and Mercor Data both list data labelling; both also serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded.1 of 1 capabilityShared product typeCompare M

Micro1UndisclosedSciloop datasets and Realm both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare H

HandshakeUndisclosedSciloop datasets and Handshake AI both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare SA

Snorkel AILate-stageSciloop datasets and Snorkel Custom Data Development both list data labelling; Sciloop's scale not recorded.1 of 1 capabilityShared product typeCompare P

ProlificUndisclosedSciloop datasets and Prolific both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare IT

Invisible TechnologiesLate-stageSciloop datasets and Invisible AI Training both list data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 1 capabilityShared product typeCompare S

SamaUndisclosedSciloop datasets and Sama Annotate both list data labelling; scale not recorded for either.1 of 1 capabilityShared product typeCompare H

HiveLate-stageSciloop datasets and Hive Enterprise Data Annotation both list data labelling; both also serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded.1 of 1 capabilityShared product typeCompare EP

Expected ParrotUndisclosedSciloop datasets and Expected Parrot both list data labelling; scale not recorded for either; ships platform rather than the same layer.1 of 1 capabilityDifferent layerCompare A

AmazonPublicSciloop datasets and Amazon SageMaker Ground Truth both list data labelling; both also serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded.1 of 1 capabilityShared product typeCompare TA

Together AILate-stageSciloop datasets and Together Fine-Tuning both serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; ships API service, developer tool and 2 more rather than the same layer.Different layerCompare A

AudioShakeEarly-stageSciloop datasets and AudioShake Refinery both serve buyers who need to train or fine-tune a model; scale not recorded for either.Shared product typeCompare W&

Weights & BiasesAcquiredSciloop datasets and W&B Models both serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; Weights & Biases is acquired, with no independent scale; ships API service, developer tool and 1 more rather than the same layer.Different layerCompare N

NVIDIAPublicSciloop datasets and NVIDIA AI Aerial both serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; ships AI agent, agent platform and 6 more rather than the same layer.1 of 1 capabilityDifferent layerCompare L

LlamaIndexUndisclosedSciloop datasets and LlamaClassify both list data labelling; scale not recorded for either.1 of 1 capabilityShared product typeCompare D

DatabricksLate-stageSciloop datasets and Databricks Feature Store both serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded.Shared product typeCompare FA

Fireworks AILate-stageSciloop datasets and Fireworks Training both serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; ships API service, infrastructure service and 1 more rather than the same layer.Different layerCompare HF

Hugging FaceLate-stageSciloop datasets and ML Intern both serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; ships AI agent, API service and 3 more rather than the same layer.Different layerCompare M

ModalLate-stageSciloop datasets and Modal Notebooks both serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; ships developer tool and infrastructure service rather than the same layer.Different layerCompare C

CoreWeavePublicSciloop datasets and CoreWeave SUNK both serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; ships AI agent, API service and 4 more rather than the same layer.Different layerCompare CM

Comet MLEarly-stageSciloop datasets and Comet Artifacts both serve buyers who need to train or fine-tune a model; scale not recorded for either; ships AI agent, application and 2 more rather than the same layer.Different layerCompare NG

Nebius GroupPublicSciloop datasets and Managed Service for MLflow both serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; ships developer tool, infrastructure service and 1 more rather than the same layer.Different layerCompare A

AlibabaPublicSciloop datasets and Alibaba Cloud Platform for AI (PAI) both list data labelling; both also serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; ships AI agent, API service and 5 more rather than the same layer.1 of 1 capabilityDifferent layerCompare C

CrusoeLate-stageSciloop datasets and Serverless Fine-Tuning both serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; ships API service, developer tool and 2 more rather than the same layer.Different layerCompare I

IntelPublicSciloop datasets and Intel Geti both list data labelling; both also serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; ships AI agent, agent platform and 5 more rather than the same layer.1 of 1 capabilityDifferent layerCompare CC

Cactus ComputeUndisclosedSciloop datasets and Cactus Platform both serve buyers who need to train or fine-tune a model; scale not recorded for either; ships infrastructure service and platform rather than the same layer.Different layerCompare NC

Nodus ComputeUndisclosedSciloop datasets and Nodus both serve buyers who need to train or fine-tune a model; scale not recorded for either; ships infrastructure service rather than the same layer.Different layerCompare HC

Huawei CloudUndisclosedSciloop datasets and DataArts Fabric both serve buyers who need to train or fine-tune a model; scale not recorded for either; ships API service, agent platform and 5 more rather than the same layer.1 of 1 capabilityDifferent layerCompare B

BasetenLate-stageSciloop datasets and Baseten Training both serve buyers who need to train or fine-tune a model; Sciloop's scale not recorded; ships API service, infrastructure service and 2 more rather than the same layer.Different layerCompare

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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.