AL

AI21 Labs

Foundation Models

Enterprise AI company building the Jamba language models and Maestro, its orchestration layer for AI agents.

Total funding$636M

Valuation$1.4B

Employees—

Founded2017

HeadquartersTel Aviv, Israel

StatusPrivate

Products

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

• AI21 Maestro Agent platform

  Planning system that runs multi-step tasks against a company's own data and validates the output against stated requirements.

• AI21 Studio Model API Sold on its own

  Hosted developer platform providing API/SDK access to AI21's Jamba foundation models with metered token pricing, a playground, file library, and web/file search tools.

• AI21 Intelligent Gateway API service Sold on its own

  A drop-in endpoint that sits in front of an agent's model calls and cuts token spend — adaptive routing, context compaction, trajectory-aware savings decisions and caching — while validating output quality against coding benchmarks.

• AI21 Post-Training Data service

  A dedicated model-customization service in which AI21 trains specialized models on a client's own data, with methodology transfer so the client can run subsequent training rounds in-house.

Closest alternatives 1

OOpenAIPrivate · $852BAI21 co-founder Yoav Shoham, on record: 'If we lose deals, it's to OpenAI, mostly.'4 of 7 capabilitiesShared product typeLarger scaleSourced competitorBuild on a hosted model APICompare

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How this list is ranked ↗

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both also serve buyers who need to train or fine-tune a model; Toloka's scale not recorded.3 of 7 capabilitiesShared product typeCompareTTuringPrivate · $2.2BAI21 Post-Training and RL environments do comparable work on model training; both also serve buyers who need to train or fine-tune a model; same layer and the same scale band (growth-stage private).2 of 7 capabilitiesShared product typeSame scale bandCompareCCrusoePrivate · $10BAI21 Post-Training and Serverless Fine-Tuning do comparable work on model training; both also serve buyers who need to train or fine-tune a model; larger scale (private).2 of 7 capabilitiesShared product typeLarger scaleCompareLLabelboxPrivate · $189M raisedAI21 Post-Training and Alignerr do comparable work on model training; both also serve buyers who need to train or fine-tune a model; same layer and the same scale band (growth-stage private).3 of 7 capabilitiesShared product typeSame scale bandCompare44ParadigmPublic · $2BAI21 Post-Training and 4Paradigm Sage HyperCycle do comparable work on model training; both also serve buyers who need to train or fine-tune a model; similar scale (public); ships application, hardware and 1 more rather than the same layer.5 of 7 capabilitiesDifferent layerCompareRRunPodPrivateAI21 Studio and Public Endpoints both serve buyers who need to build on a hosted model API, draft and edit written content and serve a model in production; RunPod's scale not recorded.3 of 7 capabilitiesShared product typeCompareMMicrosoftPublic · $3.7TAI21 Intelligent Gateway and Foundry Models both serve buyers who need to build on a hosted model API; larger scale (public).7 of 7 capabilitiesShared product typeLarger scaleCompareNNVIDIAPublic · $5.1TAI21 Post-Training and NVIDIA AI Workbench do comparable work on model training; both also serve buyers who need to train or fine-tune a model; larger scale (public).3 of 7 capabilitiesShared product typeLarger scaleCompareDDeepSeekPrivate · $50BAI21 Studio and DeepSeek API Platform both serve buyers who need to build on a hosted model API, draft and edit written content and serve a model in production; 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ships developer tool and infrastructure service rather than the same layer.2 of 7 capabilitiesDifferent layerSame scale bandCompareW&Weights & BiasesAcquiredAI21 Post-Training and W&B Models do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Weights & Biases is acquired, with no independent scale.2 of 7 capabilitiesShared product typeCompareSASnorkel AIPrivate · $1.3BAI21 Post-Training and Snorkel Flow do comparable work on model training; both also serve buyers who need to train or fine-tune a model; same layer and the same scale band (growth-stage private).2 of 7 capabilitiesShared product typeSame scale bandCompareHCHuawei CloudPrivateAI21 Studio and MaaS both serve buyers who need to build on a hosted model API and serve a model in production; Huawei Cloud's scale not recorded.4 of 7 capabilitiesShared product typeCompareYYandexPublicAI21 Intelligent Gateway and Yandex Translate both serve buyers who need to build on a hosted model API; Yandex's scale not recorded.7 of 7 capabilitiesShared product typeCompareIIBMPublic · $216.6BAI21 Post-Training and IBM SPSS Modeler do comparable work on model training; both also serve buyers who need to train or fine-tune a model; larger scale (public).6 of 7 capabilitiesShared product typeLarger scaleCompareNCNAVER CloudPrivateAI21 Intelligent Gateway and Papago Translation both serve buyers who need to build on a hosted model API; NAVER Cloud's scale not recorded.5 of 7 capabilitiesShared product typeCompareCCCactus ComputePrivateAI21 Post-Training and Cactus Platform do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Cactus Compute's scale not recorded; ships infrastructure service and platform rather than the same layer.2 of 7 capabilitiesDifferent layerComparePPerplexityPrivate · $20.4BAI21 Studio and Agent API do comparable work on search answers; both also serve buyers who need to build on a hosted model API; larger scale (private).2 of 7 capabilitiesShared product typeLarger scaleCompareGG42Private · $2.3B raisedAI21 Studio and Jais both serve buyers who need to build on a hosted model API; similar scale (private).2 of 7 capabilitiesShared product typeCompareLCLG CorpPublic · $13.4BAI21 Studio and K-EXAONE 2.0 both serve buyers who need to build on a hosted model API; larger scale (public).2 of 7 capabilitiesShared product typeLarger scaleCompareAAdobePublic · $115.9BAI21 Post-Training and Adobe Firefly Custom Models do comparable work on model training; both also serve buyers who need to train or fine-tune a model; larger scale (public).7 of 7 capabilitiesShared product typeLarger scaleCompareDDataikuPrivate · $3.7BAI21 Post-Training and Dataiku do comparable work on model training; both also serve buyers who need to train or fine-tune a model; same layer and the same scale band (growth-stage private).3 of 7 capabilitiesShared product typeSame scale bandCompareBBaichuanPrivate · $2.8BAI21 Studio and Baichuan Open Platform both serve buyers who need to build on a hosted model API and draft and edit written content; same layer and the same scale band (growth-stage private).1 of 7 capabilitiesShared product typeSame scale bandCompareNANomic AIPrivateAI21 Maestro and Nomic Platform do comparable work on document extraction; Nomic AI's scale not recorded.3 of 7 capabilitiesShared product typeCompareAAmazonPublic · $2.8TAI21 Studio and Amazon Bedrock both serve buyers who need to build on a hosted model API and serve a model in production; larger scale (public).6 of 7 capabilitiesShared product typeLarger scaleCompareBBoxPublic · $4.8BAI21 Maestro and Box MCP server do comparable work on document extraction; larger scale (public).4 of 7 capabilitiesShared product typeLarger scaleCompareAAppenPublicAI21 Post-Training and AI Data Platform do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Appen's scale not recorded.1 of 7 capabilitiesShared product typeCompareLLlamaIndexPrivateAI21 Maestro and LlamaParse do comparable work on document extraction; LlamaIndex's scale not recorded.3 of 7 capabilitiesShared product typeCompareOOpenRouterPrivate · $1.3BAI21 Studio and OpenRouter both serve buyers who need to build on a hosted model API, draft and edit written content and serve a model in production; same layer and the same scale band (growth-stage private).3 of 7 capabilitiesShared product typeSame scale bandCompareSSiemensPublic · $244.7BAI21 Post-Training and Rapidminer AI Studio do comparable work on model training; both also serve buyers who need to train or fine-tune a model; larger scale (public); ships AI agent, application and 1 more rather than the same layer.4 of 7 capabilitiesDifferent layerLarger scaleCompareCAContextual AIPrivate · $100M raisedAI21 Maestro and Contextual AI Platform do comparable work on document extraction; similar scale (private).3 of 7 capabilitiesShared product typeCompareUUnslothPrivateAI21 Post-Training and Unsloth 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 developer tool rather than the same layer.2 of 7 capabilitiesDifferent layerCompareMLMintplex LabsPrivateAI21 Maestro and AnythingLLM Cloud do comparable work on document extraction; Mintplex Labs's scale not recorded; ships application rather than the same layer.3 of 7 capabilitiesDifferent layerCompareHHuaweiPrivateAI21 Post-Training and MindSpore do comparable work on model training; both also serve buyers who need to train or fine-tune a model; larger scale (private); ships developer tool and hardware rather than the same layer.2 of 7 capabilitiesDifferent layerCompareZZoomPublic · $28.7BAI21 Intelligent Gateway and Zoom Translator API both serve buyers who need to build on a hosted model API; larger scale (public).4 of 7 capabilitiesShared product typeLarger scaleCompareDDropboxPublic · $7.8BAI21 Studio and Dropbox Dash do comparable work on document extraction and search answers; larger scale (public); ships application rather than the same layer.3 of 7 capabilitiesDifferent layerLarger scaleCompare0101.AIPrivateAI21 Studio and Yi both serve buyers who need to build on a hosted model API; 01.AI's scale not recorded.3 of 7 capabilitiesShared product typeCompareHHebbiaPrivate · $700MAI21 Maestro and Hebbia Matrix do comparable work on document extraction; smaller scale (private).2 of 7 capabilitiesShared product typeSmaller scaleCompareMMiniMaxPublic · $12.6BAI21 Studio and MiniMax Open Platform both serve buyers who need to build on a hosted model API and draft and edit written content; larger scale (public).2 of 7 capabilitiesShared product typeLarger scaleCompareKEKakao EnterprisePrivateAI21 Post-Training and Kubeflow do comparable work on model training; both also serve buyers who need to train or fine-tune a model; Kakao Enterprise's scale not recorded; ships developer tool and platform rather than the same layer.2 of 7 capabilitiesDifferent layerCompareDDocusignPublic · $12.7BAI21 Maestro and Docusign Iris do comparable work on document extraction; larger scale (public); ships AI agent, application and 1 more rather than the same layer.4 of 7 capabilitiesDifferent layerLarger scaleCompareAAAutomation AnywherePrivateAI21 Maestro and Context Intelligence Graph do comparable work on document extraction; Automation Anywhere's scale not recorded.3 of 7 capabilitiesShared product typeCompareRRunwayPrivate · $5.3BAI21 Post-Training and Runway Video Model Licensing do comparable work on model training; same layer and the same scale band (growth-stage private).1 of 7 capabilitiesShared product typeSame scale bandCompareUUiPathPublic · $7.2BAI21 Post-Training and UiPath AI Center do comparable work on model training; larger scale (public).4 of 7 capabilitiesShared product typeLarger scaleCompareSAStability AIPrivate · $495.9MAI21 Studio and Stability AI Platform API both serve buyers who need to build on a hosted model API; smaller scale (private).Shared product typeSmaller scaleCompareAMApplied MaterialsPublic · $380.7BAI21 Post-Training and SmartFactory AI Predictive Metrology do comparable work on model training; both also serve buyers who need to train or fine-tune a model; larger scale (public); ships application, hardware and 1 more rather than the same layer.1 of 7 capabilitiesDifferent layerLarger scaleCompareIMInsilico MedicinePublic · $4.3BAI21 Post-Training and Biology42: Generative Biologics do comparable work on model training; both also serve buyers who need to train or fine-tune a model; larger scale (public); ships application, hardware and 1 more rather than the same layer.4 of 7 capabilitiesDifferent layerLarger scaleCompareCCoreWeavePublic · $48.5BAI21 Post-Training and CoreWeave AI Cloud do comparable work on model training; both also serve buyers who need to train or fine-tune a model; larger scale (public); ships AI agent, infrastructure service and 1 more rather than the same layer.2 of 7 capabilitiesDifferent layerLarger scaleCompareNNaverPublic · $22.5BAI21 Studio and AI Tab do comparable work on search answers; larger scale (public); ships application rather than the same layer.2 of 7 capabilitiesDifferent layerLarger scaleCompareOOpenEvidencePrivate · $12.2BAI21 Studio and OpenEvidence do comparable work on search answers; larger scale (private); ships application rather than the same layer.2 of 7 capabilitiesDifferent layerLarger scaleCompareSServiceNowPublic · $130.1BAI21 Maestro and ServiceNow Document Intelligence do comparable work on document extraction; larger scale (public); ships AI agent, application and 2 more rather than the same layer.5 of 7 capabilitiesDifferent layerLarger scaleCompareRRogoPrivate · $300M raisedAI21 Maestro and Rogo do comparable work on document extraction; ships AI agent and platform rather than the same layer.2 of 7 capabilitiesDifferent layerSame scale bandCompareCHCohere HealthPrivate · $200M raisedAI21 Maestro and Cohere Review Assist do comparable work on document extraction; ships application and platform rather than the same layer.2 of 7 capabilitiesDifferent layerSame scale bandCompareHHyperWritePrivateAI21 Studio and HyperWrite do comparable work on search answers; both also serve buyers who need to draft and edit written content; HyperWrite's scale not recorded; ships AI agent and application rather than the same layer.2 of 7 capabilitiesDifferent layerCompareWWriterPrivate · $1.9BAI21 Maestro and WRITER Knowledge Graph do comparable work on document extraction; same layer and the same scale band (growth-stage private).4 of 7 capabilitiesShared product typeSame scale bandCompareVSVeeva SystemsPublic · $45.5BAI21 Maestro and Veeva AI do comparable work on document extraction; larger scale (public).3 of 7 capabilitiesShared product typeLarger scaleCompareTTIFINPrivate · $842MAI21 Maestro and TIFIN.AI do comparable work on document extraction; similar scale (private).2 of 7 capabilitiesShared product typeCompareEElicitPrivate · $100MAI21 Maestro and Elicit do comparable work on document extraction; smaller scale (private); ships AI agent rather than the same layer.2 of 7 capabilitiesDifferent layerSmaller scaleCompareHHubSpotPublic · $13BAI21 Maestro and Data Agent do comparable work on document extraction; larger scale (public).4 of 7 capabilitiesShared product typeLarger scaleCompareHCH CompanyPrivate · $220M raisedAI21 Intelligent Gateway and Holo Models API both serve buyers who need to build on a hosted model API; same layer and the same scale band (growth-stage private).2 of 7 capabilitiesShared product typeSame scale bandCompareKHKakao HealthcarePrivateAI21 Studio and PASTA do comparable work on document extraction; both also serve buyers who need to draft and edit written content; Kakao Healthcare's scale not recorded.2 of 7 capabilitiesShared product typeCompareCCore42PrivateAI21 Intelligent Gateway and Core42 Compass both serve buyers who need to build on a hosted model API; Core42's scale not recorded.2 of 7 capabilitiesShared product typeCompareHHarveyPrivate · $11BAI21 Maestro and Harvey Vault do comparable work on document extraction; larger scale (private); ships AI agent and application rather than the same layer.4 of 7 capabilitiesDifferent layerLarger scaleComparePProfoundPrivateAI21 Studio and Profound AI Marketer do comparable work on search answers; both also serve buyers who need to draft and edit written content; Profound's scale not recorded; ships AI agent and application rather than the same layer.2 of 7 capabilitiesDifferent layerCompareZZendeskPrivate · $10.2BAI21 Maestro and Zendesk Knowledge do comparable work on document extraction; larger scale (private); ships AI agent and application rather than the same layer.4 of 7 capabilitiesDifferent layerLarger scaleCompare

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

News reporting · 5 Oct 2025

"The round, which includes backing from Google and Nvidia, would bring the company's total capital raised to $636 million." CTech, 2025-10-05, reporting the Series D. Hedged as "would bring" (round in progress at publication) but corroborated by independent aggregate figures converging on the same number.

Valuation

Press release · 31 Aug 2023

"AI21 Labs Announces Series C Funding Round at $1.4 Billion Valuation" — AI21's own announcement dated Aug 31 2023. The figure is now dated -- three years old.

Employees

Checked — none published

Checked 2026-08-27 and no citable figure found. Four sweeps were run and all came back empty for this company: (1) its own /about, /about-us, /company, /careers, /jobs and /team pages, pattern-matched for a self-published headcount; (2) stockanalysis.com's private-company page, which footnotes each figure to its source; (3) its Forbes company profile, which states a headcount and the month it is as of; (4) a targeted web search. Everything the search returned was a LinkedIn-scraping aggregator, and those disagree with each other by wide margins and cite nothing, so they are not used here. The field is null rather than carrying the round guess it held before.

Founded

Wikipedia · 27 Aug 2026

Wikipedia infobox "founded" field, read 2026-08-27.

Description

Official documentation · 6 Sep 2026

The word Jurassic appears nowhere on AI21's current model page. The line is "Maestro: Optimization framework for real-world AI agents" and "Jamba Models: Efficient LLMs for long-context processing".

Open AI21 Labs in the directory

Something wrong here? Send a correction — quote this company id: ai21-labs.