U

Unsloth

Infrastructure

Open-source library for fine-tuning and reinforcement learning on open models, with paid Pro and Enterprise tiers.

Total funding—

Valuation—

Employees8

Founded2023

HeadquartersSan Francisco, USA

StatusPrivate

Product

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

• Unsloth Developer tool Sold on its own

  Open-source framework and desktop app for running and fine-tuning open text, vision, audio and diffusion models on a user's own hardware, with LoRA, QLoRA, full fine-tuning and reinforcement-learning support and an OpenAI-compatible local API.

Similar products 64

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 ↗

HHuaweiPrivateUnsloth and MindSpore do comparable work on model training; both also serve buyers who need to run an open-weight model on your own infrastructure, serve a model in production and train or fine-tune a model; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareBBasetenPrivate · $13BUnsloth and Baseten do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded; ships API service, infrastructure service and 2 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareBBaiduPublic · $31.6BUnsloth and PaddlePaddle do comparable work on model training; both also serve buyers who need to run an open-weight model on your own infrastructure, serve a model in production and train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareCCCactus ComputePrivateUnsloth and Cactus Platform do comparable work on model training; both also 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.2 of 2 capabilitiesDifferent layerCompareFAFireworks AIPrivate · $17.5BUnsloth and Fireworks AI do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded; ships API service and model API rather than the same layer.2 of 2 capabilitiesDifferent layerCompareTMThinking Machines LabPrivate · $12BUnsloth and Tinker do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded; ships API service rather than the same layer.2 of 2 capabilitiesDifferent layerCompareTATogether AIPrivate · $8.3BUnsloth and Together Custom Training do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareNGNebius GroupPublic · $61.6BUnsloth and Managed Service for MLflow do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareHCHuawei CloudPrivateUnsloth and Huawei HiLens do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareIIntelPublic · $463.7BUnsloth and Intel Neural Compressor both serve buyers who need to run an open-weight model on your own infrastructure and serve a model in production; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareKEKakao EnterprisePrivateUnsloth and Kubeflow do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareDDatabricksPrivate · $190BUnsloth and Databricks Model Training do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareRRunPodPrivateUnsloth and Runpod Hub both serve buyers who need to serve a model in production; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareCMComet MLPrivate · $70M raisedUnsloth and Comet Artifacts do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded.1 of 2 capabilitiesShared product typeCompareMModalPrivate · $466M raisedUnsloth and Modal Notebooks do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareNCNAVER CloudPrivateUnsloth and AiTEMS do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; scale not recorded for either; ships API service, application and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareCCrusoePrivate · $10BUnsloth and Crusoe Cloud do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareLLambdaPrivate · $1.5B raisedUnsloth and Lambda Cloud do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded; ships infrastructure service and model API rather than the same layer.2 of 2 capabilitiesDifferent layerCompareLLabelboxPrivate · $189M raisedUnsloth and Labelbox Foundry both serve buyers who need to serve a model in production; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareLALiquid AIPrivateUnsloth and LEAP do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; scale not recorded for either; ships application and platform rather than the same layer.2 of 2 capabilitiesDifferent layerCompareAAlibabaPublic · $273.4BUnsloth and ModelScope do comparable work on model training; both also serve buyers who need to run an open-weight model on your own infrastructure, serve a model in production and train or fine-tune a model; Unsloth's scale not recorded; ships AI agent, API service and 4 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareCCoreWeavePublic · $48.5BUnsloth and CoreWeave AI Cloud do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded; ships AI agent, infrastructure service and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareOOraclePublic · $454.4BUnsloth and OCI Data Science do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareNNVIDIAPublic · $5.1TUnsloth and NVIDIA AI Enterprise do comparable work on model training; both also serve buyers who need to run an open-weight model on your own infrastructure, serve a model in production and train or fine-tune a model; Unsloth's scale not recorded; ships hardware, infrastructure service and 2 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareEEleutherAINonprofitUnsloth and GPT-NeoX do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; EleutherAI is a nonprofit, with no independent scale.1 of 2 capabilitiesShared product typeCompareDTDell TechnologiesPublic · $360.7BUnsloth and Dell Enterprise Hub both serve buyers who need to run an open-weight model on your own infrastructure and serve a model in production; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareTTolokaPrivateUnsloth and Toloka Train do comparable work on model training; both also serve buyers who need to train or fine-tune a model; scale not recorded for either; ships AI agent, data service and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareW&Weights & BiasesAcquiredUnsloth and W&B Models do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; Weights & Biases is acquired, with no independent scale.2 of 2 capabilitiesShared product typeCompareTTuringPrivate · $2.2BUnsloth and RL environments do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships agent platform and data service rather than the same layer.1 of 2 capabilitiesDifferent layerCompareHFHugging FacePrivate · $4.5BUnsloth and Hugging Face Jobs do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships API service, application and 2 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompare44ParadigmPublic · $2BUnsloth and 4Paradigm Sage AIOS do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded; ships application, hardware and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareNNeo4jPrivate · $2BUnsloth and Neo4j Graph Data Science do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships agent platform, application and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareAAMDPublic · $785.1BUnsloth and AMD ROCm do comparable work on model training; both also serve buyers who need to run an open-weight model on your own infrastructure, serve a model in production and train or fine-tune a model; Unsloth's scale not recorded; ships hardware, infrastructure service and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareAAppenPublicUnsloth and AI Data Platform do comparable work on model training; both also serve buyers who need to train or fine-tune a model; scale not recorded for either; ships data service and platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareTTencentPublic · $510.1BUnsloth and Tencent Cloud TI Platform do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareSSplunkAcquiredUnsloth and Splunk AI Toolkit do comparable work on model training; Unsloth's scale not recorded; Splunk is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareOOllamaPrivate · $88M raisedUnsloth and Ollama both serve buyers who need to run an open-weight model on your own infrastructure and serve a model in production; Unsloth's scale not recorded; ships infrastructure service and model API rather than the same layer.1 of 2 capabilitiesDifferent layerCompareAAlphabet (Google)Public · $4.2TUnsloth and Vertex AI Workbench do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareHHumainPrivateUnsloth and HUMAIN COMPUTE do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; scale not recorded for either; ships API service, agent platform and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareKKuaishouPublic · $18.6BUnsloth and Vanchin do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareDDecartPrivate · $4BUnsloth and Decart Optimization Stack do comparable work on model training; both also serve buyers who need to run an open-weight model on your own infrastructure, serve a model in production and train or fine-tune a model; Unsloth's scale not recorded; ships API service, application and 2 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareMMicrosoftPublic · $3.7TUnsloth and Azure Machine Learning do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareMModularAcquired ($3.1B deal)Unsloth and MAX both serve buyers who need to run an open-weight model on your own infrastructure and serve a model in production; Unsloth's scale not recorded; Modular is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareCSCerebras SystemsPublic · $44.4BUnsloth and Cerebras Training Cloud do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships hardware, model API and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareUUiPathPublic · $7.2BUnsloth and UiPath AI Center do comparable work on model training; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareYYandexPublicUnsloth and Yandex DataSphere do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareIIBMPublic · $216.6BUnsloth and IBM watsonx.ai do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareMAMistral AIPrivate · $13.8BUnsloth and Mistral Forge do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships AI agent, API service and 3 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareSSenseTimePublic · $7.7BUnsloth and SenseCore do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded; ships application, hardware and 4 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareALAI21 LabsPrivate · $1.4BUnsloth and AI21 Post-Training do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships API service, agent platform and 2 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareAAmazonPublic · $2.8TUnsloth and Amazon SageMaker AI do comparable work on model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Unsloth's scale not recorded.2 of 2 capabilitiesShared product typeCompareHTHailo TechnologiesAcquired ($340M deal)Unsloth and Hailo AI Software Suite both serve buyers who need to run an open-weight model on your own infrastructure and serve a model in production; Unsloth's scale not recorded; Hailo Technologies is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareSSiemensPublic · $244.7BUnsloth and Rapidminer AI Studio do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships AI agent, application and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareBFBlack Forest LabsPrivate · $3.3BUnsloth and Open Weights Licensing do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships application, infrastructure service and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareDDeepchecksAbsorbedUnsloth and Deepchecks ML Testing both serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; Deepchecks is absorbed, with no independent scale.Shared product typeCompareRRunwayPrivate · $5.3BUnsloth and Runway Video Model Licensing do comparable work on model training; Unsloth's scale not recorded.1 of 2 capabilitiesShared product typeCompareSASnorkel AIPrivate · $1.3BUnsloth and Snorkel Flow do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships agent platform, data service and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareAMApplied MaterialsPublic · $380.7BUnsloth and SmartFactory AI Predictive Metrology do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships application, hardware and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareRReplicatePrivateUnsloth and Replicate both serve buyers who need to serve a model in production; scale not recorded for either; ships infrastructure service rather than the same layer.1 of 2 capabilitiesDifferent layerCompareIMInsilico MedicinePublic · $4.3BUnsloth and Biology42: Generative Biologics do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships application, hardware and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareOOpenRouterPrivate · $1.3BUnsloth and OpenRouter both serve buyers who need to serve a model in production; Unsloth's scale not recorded.1 of 2 capabilitiesShared product typeCompareCCivitaiPrivate · $5.1M raisedUnsloth and Civitai both serve buyers who need to serve a model in production; Unsloth's scale not recorded; ships API service and platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareAAdobePublic · $115.9BUnsloth and Adobe Firefly Custom Models do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Unsloth's scale not recorded; ships AI agent, API service and 2 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareVVMwareAcquiredUnsloth and VMware Cloud Foundation Private AI Services both serve buyers who need to serve a model in production; Unsloth's scale not recorded; VMware is acquired, with no independent scale; ships infrastructure service rather than the same layer.1 of 2 capabilitiesDifferent layerCompare

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

Employees

Company disclosure · 17 Sep 2026

Y Combinator company page: team size 8, Summer 2024 batch.

Founded

Company disclosure · 17 Sep 2026

Y Combinator company page states founded 2023.

Description

Company disclosure · 17 Sep 2026

Delivery test (§1.1): the library is how a customer fine-tunes an open model; the paid tiers sell that training path.

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