HA

Hume AI

Infrastructure

Sells the data and evaluation layer under emotionally intelligent voice AI: custom data collection around a customer's own scenarios, a platform that auto-generates and runs those scenarios to find where a voice agent breaks, an API that measures expression in speech in real time, and human feedback at scale.

Total funding—

Valuation—

Employees—

Founded—

HeadquartersNew York, USA

StatusPrivate

Products

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

• Kairos Platform Platform

  Evaluation platform for voice agents: it builds evaluation suites from real-world use cases, simulates agent-to-agent and human-to-agent conversations against any voice model, and tracks regressions over time.

• Octave TTS API service Sold on its own

  Octave TTS is Hume's text-to-speech API, which Hume's documentation calls 'the first text-to-speech system built on LLM intelligence.' The marketing page positions it as 'Text-to-speech with emotional intelligence' that generates 'expressive, natural-sounding speech that conveys the full range of human emotion,' with SDKs for Python, TypeScript, .NET and Swift and streaming audio output. It is billed by characters on Hume's public self-serve plans.

• Empathic Voice Interface (EVI) API service Sold on its own

  Empathic Voice Interface (EVI) is Hume's real-time speech-to-speech voice AI API, described in Hume's docs as 'an advanced, real-time emotionally intelligent voice AI.' The product page markets it as a way to 'Build voice-first AI experiences that understand and respond to human emotions' and states it 'works seamlessly with Claude, GPT, Gemini, Grok, Kimi K2, Llama, and more' - layering voice on top of third-party language models rather than supplying its own. It is billed per conversation minute on Hume's public plans.

• Creator Studio Application Sold on its own

  Creator Studio is Hume's web application, hosted at app.hume.ai, for turning written documents into narrated audio: 'From document to audio, effortlessly. Import your content, assign voices, add acting directions, and export production-ready audio.' Hume targets it at creators producing audiobooks, videos, podcasts, documentaries, e-learning courses and corporate training that need multi-voice narration with emotional direction.

• Expression Measurement API API service

  The Expression Measurement API measures emotional and vocal expression in speech, marketed as 'Measure expression in voice, offline or in real time.' Hume describes two endpoints on the one page: 'The Tagger API returns 600+ expression and voice dimensions from any audio, at scale. The Prosody API delivers real-time emotional expressions during live conversations.' Measured dimensions include emotion categories, speaking styles, vocal qualities such as pace, warmth and hesitation, and expression intensity with confidence scores.

• Human Feedback API API service

  The Human Feedback API sells human evaluation of voice and conversational AI as an API call, marketed as 'One API call. Real human ratings.' and 'Plug human evaluation into your pipeline. Audio in, structured results out.' It supports three study types - live conversations with AI models, single-sample audio ratings with custom questions, and side-by-side A/B comparisons - with Hume handling participant recruitment, quality control and fraud detection. Hume states it powers 'evaluation for Hume's own frontier voice models.'

• Data Solutions Data service

  Data Solutions is Hume's licensed AI training-data offering, headlined 'Voice Training Data Built by Researchers, for Researchers' and described as 'Datasets for creating realistic voices across global languages, powering our own state-of-the-art models, and now available to power yours.' The catalogue spans voice datasets covering 50+ languages, 48+ emotions and 600+ voice descriptors, plus expression and multimodal datasets for facial expression, vocal bursts, speech prosody and text emotion. Hume also sells custom data collection with defined speakers and recording conditions, and API access for programmatic data refresh and generation.

Closest alternatives 2

EElevenLabsPrivate · $11BHume's own Octave launch post runs a named blind-preference study against ElevenLabs Voice Design specifically.3 of 6 capabilitiesShared product typeSourced competitorCreate synthetic voice and audioCompareCCartesiaPrivate1 of 6 capabilitiesShared product typeSourced competitorCreate synthetic voice and audioCompare

Similar products 92

How this list is ranked ↗

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both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareSSpeechmaticsPrivateOctave TTS and Text to Speech do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; scale not recorded for either.3 of 6 capabilitiesShared product typeCompareSAScale AIPrivate · $29BData Solutions and Scale Data Engine do comparable work on data labelling; both also serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareNCNAVER CloudPrivateOctave TTS and CLOVA Voice do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; scale not recorded for either.3 of 6 capabilitiesShared product typeCompareTTuringPrivate · $2.2BData Solutions and Turing Frontier AI do comparable work on data labelling; both also serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareRRespeecherPrivate · $4M raisedEmpathic Voice Interface (EVI) and Respeecher Text-to-Speech API do comparable work on text to speech and voice agent; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareLLabelboxPrivate · $189M raisedData Solutions and Terra do comparable work on data labelling; both also serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeComparePPlayAIPrivateOctave TTS and Play.ht do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; scale not recorded for either.1 of 6 capabilitiesShared product typeCompareSASurge AIPrivate · $0 raisedData Solutions and Surge AI data platform do comparable work on data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 6 capabilitiesShared product typeCompareSSamaPrivateData Solutions and Sama Annotate do comparable work on data labelling; scale not recorded for either.3 of 6 capabilitiesShared product typeComparePProlificPrivateData Solutions and Prolific do comparable work on data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.2 of 6 capabilitiesShared product typeCompareWLWellSaid LabsPrivateOctave TTS and WellSaid Labs voice platform do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; scale not recorded for either.1 of 6 capabilitiesShared product typeCompareMMercorPrivate · $20BData Solutions and Mercor Data do comparable work on data labelling; both also serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareITInvisible TechnologiesPrivate · $144M raisedData Solutions and Invisible AI Training do comparable work on data labelling; both also serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareHHandshakePrivateData Solutions and Handshake AI do comparable work on data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.2 of 6 capabilitiesShared product typeCompareMMicro1PrivateData Solutions and micro1 Data Engine do comparable work on data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.2 of 6 capabilitiesShared product typeCompareHHumanSignalPrivateData Solutions and Label Studio Enterprise do comparable work on data labelling; both also serve buyers who need to train or fine-tune a model; scale not recorded for either.1 of 6 capabilitiesShared product typeCompareAAlphabet (Google)Public · $4.2TOctave TTS and Cloud Text-to-Speech do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.4 of 6 capabilitiesShared product typeCompareFAFireworks AIPrivate · $17.5BHuman Feedback API and Fireworks Training both serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded.Shared product typeCompareSASnorkel AIPrivate · $1.3BData Solutions and Snorkel Custom Data Development do comparable work on data labelling; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareFRFurhat RoboticsPrivateEmpathic Voice Interface (EVI) and Furhat robot do comparable work on text to speech and voice agent; both also serve buyers who need to create synthetic voice and audio; scale not recorded for either.2 of 6 capabilitiesShared product typeCompareHCHuawei CloudPrivateCreator Studio and MetaStudio both serve buyers who need to create synthetic voice and audio; scale not recorded for either.1 of 6 capabilitiesShared product typeCompareIIBMPublic · $216.6BOctave TTS and IBM Watson Text to Speech do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.4 of 6 capabilitiesShared product typeCompareTTencentPublic · $510.1BOctave TTS and Tencent Cloud TTS do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareAAmazonPublic · $2.8TOctave TTS and Amazon Polly do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.4 of 6 capabilitiesShared product typeCompareRRunPodPrivateOctave TTS and Public Endpoints do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; scale not recorded for either.1 of 6 capabilitiesShared product typeCompareSSunoPrivate · $5.4BCreator Studio and Suno Studio do comparable work on audio editing; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareYYandexPublicEmpathic Voice Interface (EVI) and Yandex SpeechKit do comparable work on text to speech and voice agent; both also serve buyers who need to create synthetic voice and audio; scale not recorded for either.3 of 6 capabilitiesShared product typeCompareOOraclePublic · $454.4BOctave TTS and OCI Speech do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareTTwilioPublic · $36.5BEmpathic Voice Interface (EVI) and Conversation Relay do comparable work on text to speech and voice agent; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareGGalileoAcquired ($68M deal)Kairos Platform and Galileo both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded; Galileo is acquired, with no independent scale.1 of 6 capabilitiesShared product typeCompareNNVIDIAPublic · $5.1TKairos Platform and NVIDIA NeMo do comparable work on data labelling; both also serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.6 of 6 capabilitiesShared product typeCompareDDeepchecksAbsorbedKairos Platform and Deepchecks LLM Evaluation both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded; Deepchecks is absorbed, with no independent scale.1 of 6 capabilitiesShared product typeCompareHHeyGenPrivate · $500MCreator Studio and HeyGen Video Translator do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareMMiniMaxPublic · $12.6BCreator Studio and MiniMax Audio do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareCMComet MLPrivate · $70M raisedKairos Platform and Opik both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareMAMistral AIPrivate · $13.8BEmpathic Voice Interface (EVI) and Mistral Speech do comparable work on text to speech and voice agent; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareXxAIAcquired ($230B deal)Empathic Voice Interface (EVI) and Grok Voice do comparable work on text to speech and voice agent; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded; xAI is acquired, with no independent scale.2 of 6 capabilitiesShared product typeCompareCClickHousePrivate · $1.1B raisedKairos Platform and ClickStack both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareAAArize AIPrivateOverlaps on data analysis and evaluation and observability; scale not recorded for either.2 of 6 capabilitiesShared product typeCompareFForethoughtPrivate · $115M raisedOverlaps on data analysis, evaluation and observability and voice agent; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareMMicrosoftPublic · $3.7TOctave TTS and Azure AI Immersive Reader do comparable work on text to speech; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareSStepFunPrivate · $10BEmpathic Voice Interface (EVI) and 阶跃星辰 AI Studio (StepFun AI Studio) do comparable work on text to speech and voice agent; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareSSierraPrivate · $15.8BOverlaps on data analysis, evaluation and observability and voice agent; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareSASarvam AIPrivate · $275M raisedOctave TTS and Sarvam Text to Speech do comparable work on text to speech; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareBBraintrustPrivate · $125M raisedKairos Platform and Braintrust both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareAAdobePublic · $115.9BCreator Studio and Adobe Podcast do comparable work on audio editing; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareW&Weights & BiasesAcquiredHuman Feedback API and W&B Models both serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded; Weights & Biases is acquired, with no independent scale.1 of 6 capabilitiesShared product typeCompareCCerencePublic · $384.9MOctave TTS and Cerence Voice Lab do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareKKakaoPublic · $16BCreator Studio and Kanana do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareAAArthur AIPrivate · $62.7M raisedKairos Platform and Arthur both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareFAFiddler AIPrivate · $100M raisedKairos Platform and Fiddler AI both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareZZoomPublic · $28.7BEmpathic Voice Interface (EVI) and Zoom Virtual Agent do comparable work on text to speech and voice agent; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.4 of 6 capabilitiesShared product typeCompareCCognigyAcquiredKairos Platform and Cognigy AI Ops Center both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded; Cognigy is acquired, with no independent scale.3 of 6 capabilitiesShared product typeCompareSSplunkAcquiredOverlaps on data analysis and evaluation and observability; Hume AI's scale not recorded; Splunk is acquired, with no independent scale.2 of 6 capabilitiesShared product typeCompareKKrispPrivateCreator Studio and Krisp do comparable work on audio editing; both also serve buyers who need to create synthetic voice and audio; scale not recorded for either.2 of 6 capabilitiesShared product typeCompareIIntelPublic · $463.7BKairos Platform and Intel Geti do comparable work on data labelling; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareSSpeakPrivate · $162M raisedCreator Studio and Speak both serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareDDatadogPublic · $84.9BOverlaps on data analysis and evaluation and observability; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareDDecagonPrivate · $4.5BKairos Platform and Experiments both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareSSynthesiaPrivate · $4BCreator Studio and Synthesia do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareHHeliconeAcquiredKairos Platform and Helicone both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded; Helicone is acquired, with no independent scale.1 of 6 capabilitiesShared product typeCompareLLangfuseAcquiredKairos Platform and Langfuse both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded; Langfuse is acquired, with no independent scale.1 of 6 capabilitiesShared product typeCompareGGenesysPrivateEmpathic Voice Interface (EVI) and Genesys Cloud CX do comparable work on voice agent; both also serve buyers who need to create synthetic voice and audio; scale not recorded for either.2 of 6 capabilitiesShared product typeCompareOOpenAIPrivate · $852BOctave TTS and OpenAI API do comparable work on text to speech; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareSESamsung ElectronicsPublic · $1.2TCreator Studio and Bixby both serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareNNiCEPublic · $6.5BKairos Platform and NiCE Quality Management both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareSServiceNowPublic · $130.1BKairos Platform and AI Control Tower both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareEElasticPublic · $10.2BOverlaps on data analysis and evaluation and observability; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareCCoreWeavePublic · $48.5BKairos Platform and CoreWeave ARIA both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareZZendeskPrivate · $10.2BCreator Studio and Zendesk Contact Center both serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareFFinAcquired ($3.6B deal)Kairos Platform and Fin Analyze both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded; Fin is acquired, with no independent scale.3 of 6 capabilitiesShared product typeCompareAAlibabaPublic · $273.4BKairos Platform and Alibaba Cloud Platform for AI (PAI) do comparable work on data labelling; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareXXiao-iPublicEmpathic Voice Interface (EVI) and Xiao-i cognitive intelligence platform do comparable work on voice agent; both also serve buyers who need to create synthetic voice and audio; scale not recorded for either.2 of 6 capabilitiesShared product typeCompareAAtlassianPublic · $48.2BCreator Studio and Customer Service Management both serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareTATogether AIPrivate · $8.3BHuman Feedback API and Together Fine-Tuning both serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded.Shared product typeCompareDDatabricksPrivate · $190BKairos Platform and Agent Bricks both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.2 of 6 capabilitiesShared product typeCompareHFHugging FacePrivate · $4.5BData Solutions and Hugging Face Jobs both serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded.Shared product typeCompareCCrusoePrivate · $10BHuman Feedback API and Serverless Fine-Tuning both serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareLLangChainPrivate · $160M raisedKairos Platform and LangSmith both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareCCiscoPublic · $433.3BEmpathic Voice Interface (EVI) and Webex AI Agent do comparable work on voice agent; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.3 of 6 capabilitiesShared product typeCompareHHaptikAcquired ($112M deal)Kairos Platform and Haptik Agent Analytics both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Hume AI's scale not recorded; Haptik is acquired, with no independent scale.2 of 6 capabilitiesShared product typeCompareBBasetenPrivate · $13BData Solutions and Baseten Training both serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded.Shared product typeCompareNGNebius GroupPublic · $61.6BHuman Feedback API and Managed Service for MLflow both serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded; ships developer tool, infrastructure service and 1 more rather than the same layer.1 of 6 capabilitiesDifferent layerCompareDDeepLPrivate · $2BCreator Studio and DeepL Voice for Conversations do comparable work on text to speech; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareEEliseAIPrivate · $384M raisedEmpathic Voice Interface (EVI) and EliseAI do comparable work on voice agent; both also serve buyers who need to create synthetic voice and audio; Hume AI's scale not recorded.1 of 6 capabilitiesShared product typeCompareMModalPrivate · $466M raisedData Solutions and Modal Notebooks both serve buyers who need to train or fine-tune a model; Hume AI's scale not recorded; ships developer tool and infrastructure service rather than the same layer.Different layerCompareCCCactus ComputePrivateData Solutions and Cactus Platform both serve buyers who need to train or fine-tune a model; scale not recorded for either.Shared product typeCompare

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

Not found · 5 Sep 2026

No funding total published by the company.

Valuation

Checked — none published

No valuation published.

Employees

Not found · 5 Sep 2026

No headcount published.

Founded

Not found · 5 Sep 2026

No founding year stated on the site or in the privacy policy, and no Wikipedia company article exists — an opensearch for "Hume AI" returns the philosopher.

Revenue

Checked — none published

Private; no revenue published.

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