Hopper

Inference for voice: it trains speech-to-text, text-to-speech and speech language models on a customer's production calls, then serves and improves them against live traffic, with low time to first token and token pricing shown against GPT-4.1; run by two founders who previously worked on voice inference and on inference kernels.

StageUndisclosed

Founded2026

HeadquartersSan Francisco, USA

StatusPrivate

Founded — ycombinator.com · 18 Oct 2026

withhopper.com

Product

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

Hopper Model API Sold on its own

Voice model API: trains speech-to-text, text-to-speech and speech language models on a customer's production calls, then serves and improves them against live traffic; the home page shows a Gemma 4 31B language model at 80 ms time to first token and $0.30 per million input tokens, set against GPT-4.1; start in the console or talk to the founders.

Similar products 83

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 83Capability overlap 82Shared product type 30Same company status 56

Fireworks AILate-stageHopper and Fireworks AI both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded.3 of 4 capabilitiesShared product typeCompare R

RunPodLate-stageHopper and Public Endpoints both list text to speech; both also serve buyers who need to serve a model in production; Hopper's scale not recorded.3 of 4 capabilitiesShared product typeCompare HC

Huawei CloudUndisclosedHopper and Huawei HiLens both list 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.4 of 4 capabilitiesShared product typeCompare NC

NAVER CloudUndisclosedHopper and AiTEMS both list 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.4 of 4 capabilitiesDifferent layerCompare B

BasetenLate-stageHopper and Baseten both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded.2 of 4 capabilitiesShared product typeCompare I

IsoquantUndisclosedHopper and Isoquant both list model training; both also serve buyers who need to serve a model in production; scale not recorded for either.2 of 4 capabilitiesShared product typeCompare KE

Kakao EnterpriseUndisclosedHopper and Kubeflow both list 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 developer tool and platform rather than the same layer.2 of 4 capabilitiesDifferent layerCompare U

UnslothUndisclosedHopper and Unsloth both list 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 developer tool rather than the same layer.2 of 4 capabilitiesDifferent layerCompare VE

Volcano EngineUndisclosedHopper and Machine Learning Platform (机器学习平台) both list 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 4 capabilitiesShared product typeCompare A

AssemblyAILate-stageHopper and AssemblyAI Voice Agent API do comparable work on speech to text and text to speech; scale not recorded for either; ships API service and application rather than the same layer.3 of 4 capabilitiesDifferent layerCompare HA

Hume AIUndisclosedHopper and Octave TTS both list text to speech; scale not recorded for either; ships API service, application and 3 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompare V

Vast.aiUndisclosedHopper and Vast.ai GPU Cloud both list 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 infrastructure service rather than the same layer.2 of 4 capabilitiesDifferent layerCompare O

OraclePublicHopper and Generative AI Capabilities both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded.4 of 4 capabilitiesShared product typeCompare NG

Nebius GroupPublicHopper and Nebius Token Factory both serve buyers who need to serve a model in production; Hopper's scale not recorded.2 of 4 capabilitiesShared product typeCompare N

NVIDIAPublicHopper and NVIDIA cuEquivariance both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded.4 of 4 capabilitiesShared product typeCompare S

SpeechmaticsUndisclosedHopper and Text to Speech both list text to speech; scale not recorded for either; ships API service and developer tool rather than the same layer.2 of 4 capabilitiesDifferent layerCompare NC

Nodus ComputeUndisclosedHopper and Nodus both list 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 infrastructure service rather than the same layer.2 of 4 capabilitiesDifferent layerCompare C

CrusoeLate-stageHopper and Crusoe Cloud both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded; ships API service, developer tool and 2 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompare C

CoreWeavePublicHopper and CoreWeave Kubernetes Service both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded; ships AI agent, API service and 4 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompare G

GladiaUndisclosedHopper and Gladia Speech-to-Text API both list speech to text; scale not recorded for either; ships API service and application rather than the same layer.1 of 4 capabilitiesDifferent layerCompare TA

Together AILate-stageHopper and Together Inference both serve buyers who need to serve a model in production; Hopper's scale not recorded.2 of 4 capabilitiesShared product typeCompare CC

Cactus ComputeUndisclosedHopper and Cactus Platform both list 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 4 capabilitiesDifferent layerCompare K

KuaishouPublicHopper and Vanchin both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded.3 of 4 capabilitiesShared product typeCompare S

SonioxUndisclosedHopper and Soniox Text-to-Speech API both list text to speech; scale not recorded for either; ships API service and application rather than the same layer.2 of 4 capabilitiesDifferent layerCompare D

DeepgramLate-stageHopper and Deepgram Speech-to-Text both list speech to text; Hopper's scale not recorded; ships API service rather than the same layer.2 of 4 capabilitiesDifferent layerCompare L

LambdaLate-stageHopper and Lambda Inference both serve buyers who need to serve a model in production; scale not recorded for either.2 of 4 capabilitiesShared product typeCompare U

UniphoreLate-stageHopper and Uniphore Model Layer both serve buyers who need to serve a model in production; Hopper's scale not recorded; ships application, data service and 1 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompare D

DatabricksLate-stageHopper and Databricks Feature Store both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded.2 of 4 capabilitiesShared product typeCompare L

LabelboxLate-stageHopper and Recursion Managed Agents both list 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 agent platform, application and 3 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompare A

AmazonPublicHopper and Amazon SageMaker HyperPod both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded.4 of 4 capabilitiesShared product typeCompare TMThinking Machines LabLate-stageHopper and Tinker both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded; ships API service rather than the same layer.2 of 4 capabilitiesDifferent layerCompare S

StepFunLate-stageHopper and StepFun Open Platform both list text to speech; both also serve buyers who need to serve a model in production; Hopper's scale not recorded.3 of 4 capabilitiesShared product typeCompare H

HiveLate-stageHopper and Hive AutoML both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded; ships API service, application and 2 more rather than the same layer.3 of 4 capabilitiesDifferent layerCompare RA

Resemble AIEarly-stageHopper and Resemble Intelligence both list speech to text; scale not recorded for either; ships API service and application rather than the same layer.2 of 4 capabilitiesDifferent layerCompare T

TencentPublicHopper and Tencent Cloud TI Platform both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded.4 of 4 capabilitiesShared product typeCompare A

Alphabet (Google)PublicHopper and Gemini Enterprise Agent Platform (formerly Vertex AI) both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded.4 of 4 capabilitiesShared product typeCompare IA

Inworld AIUndisclosedHopper and Inworld Compute both serve buyers who need to serve a model in production; scale not recorded for either.3 of 4 capabilitiesShared product typeCompare O

OllamaEarly-stageHopper and Ollama Cloud both serve buyers who need to serve a model in production; scale not recorded for either.1 of 4 capabilitiesShared product typeCompare HF

Hugging FaceLate-stageHopper and Hugging Face Jobs both list model training; both also serve buyers who need to train or fine-tune a model; Hopper's scale not recorded; ships AI agent, API service and 3 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompare C

CartesiaEarly-stageHopper and Sonic / Ink do comparable work on speech to text and text to speech; scale not recorded for either; ships API service and agent platform rather than the same layer.2 of 4 capabilitiesDifferent layerCompare I

IBMPublicHopper and IBM watsonx.ai both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded; ships API service, agent platform and 4 more rather than the same layer.4 of 4 capabilitiesDifferent layerCompare I

iFlytekPublicHopper and iFLYTEK All-in-One Server both list 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 2 more rather than the same layer.4 of 4 capabilitiesDifferent layerCompare SM

Super Micro ComputerPublicHopper and SuperCloud Developer Console (SDX) both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded; Super Micro Computer's scale not comparable: only a revenue estimate, no market cap or valuation; ships hardware and infrastructure service rather than the same layer.2 of 4 capabilitiesDifferent layerCompare SA

Sarvam AILate-stageHopper and Sarvam AI Platform do comparable work on speech to text and text to speech; Hopper's scale not recorded.3 of 4 capabilitiesShared product typeCompare MA

Mistral AILate-stageHopper and Mistral Speech do comparable work on speech to text and text to speech; Hopper's scale not recorded.3 of 4 capabilitiesShared product typeCompare I

IntelPublicHopper and Intel Geti both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded; ships AI agent, agent platform and 5 more rather than the same layer.3 of 4 capabilitiesDifferent layerCompare M

MicrosoftPublicHopper and Azure Machine Learning both list model training; both also serve buyers who need to train or fine-tune a model; Hopper's scale not recorded; ships AI agent, API service and 6 more rather than the same layer.4 of 4 capabilitiesDifferent layerCompare F

FalUndisclosedHopper and fal both serve buyers who need to serve a model in production; scale not recorded for either.2 of 4 capabilitiesShared product typeCompare T

TuringLate-stageHopper and RL environments both list model training; both also serve buyers who need to train or fine-tune a model; Hopper's scale not recorded; ships agent platform and data service rather than the same layer.1 of 4 capabilitiesDifferent layerCompare O

OpenRouterLate-stageHopper and OpenRouter both serve buyers who need to serve a model in production; Hopper's scale not recorded.1 of 4 capabilitiesShared product typeCompare Y

YandexPublicHopper and Yandex DataSphere both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded; ships API service, application and 2 more rather than the same layer.4 of 4 capabilitiesDifferent layerCompare P

PetrichorUndisclosedHopper and Petrichor both list model training; both also serve buyers who need to train or fine-tune a model; scale not recorded for either; ships data service rather than the same layer.1 of 4 capabilitiesDifferent layerCompare M

ModalLate-stageHopper and Modal Inference both serve buyers who need to serve a model in production; Hopper's scale not recorded; ships developer tool and infrastructure service rather than the same layer.2 of 4 capabilitiesDifferent layerCompare O

OpenAILate-stageHopper and OpenAI API do comparable work on speech to text and text to speech; Hopper's scale not recorded.2 of 4 capabilitiesShared product typeCompare W&

Weights & BiasesAcquiredHopper and W&B Models both list model training; both also serve buyers who need to train or fine-tune a model; Hopper'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.2 of 4 capabilitiesDifferent layerCompare A

AlibabaPublicHopper and Alibaba Cloud Model Studio both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded.4 of 4 capabilitiesShared product typeCompare CM

Comet MLEarly-stageHopper and Comet Experiment Tracking both list model training; both also 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.1 of 4 capabilitiesDifferent layerCompare T

TolokaUndisclosedHopper and Toloka Train both list 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 4 capabilitiesDifferent layerCompare ST

SK TelecomPublicHopper and AI Cloud Manager both list model training; both also serve buyers who need to train or fine-tune a model; scale not recorded for either; ships application and infrastructure service rather than the same layer.2 of 4 capabilitiesDifferent layerCompare R

ReplicateUndisclosedHopper 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 4 capabilitiesDifferent layerCompare E

ElevenLabsLate-stageHopper and ElevenAPI do comparable work on speech to text and text to speech; Hopper's scale not recorded; ships API service, agent platform and 1 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompare C

CerencePublicHopper and Cerence Voice Lab do comparable work on speech to text and text to speech; Hopper's scale not recorded; ships AI agent, application and 2 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompare ND

Not DiamondUndisclosedHopper and Not Diamond both list model training; scale not recorded for either; ships API service and developer tool rather than the same layer.2 of 4 capabilitiesDifferent layerCompare A

AppenPublicHopper and AI Data Platform both list 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 4 capabilitiesDifferent layerCompare V

VMwareAcquiredHopper and VMware Cloud Foundation Private AI Services both serve buyers who need to serve a model in production; Hopper's scale not recorded; VMware is acquired, with no independent scale; ships infrastructure service rather than the same layer.1 of 4 capabilitiesDifferent layerCompare R

RimeUndisclosedHopper and Mist / Coda both list text to speech; scale not recorded for either; ships API service rather than the same layer.1 of 4 capabilitiesDifferent layerCompare WL

WellSaid LabsUndisclosedHopper and WellSaid API both list text to speech; scale not recorded for either; ships API service and application rather than the same layer.1 of 4 capabilitiesDifferent layerCompare M

ModularAcquiredHopper and MAX both serve buyers who need to serve a model in production; Hopper's scale not recorded; Modular is acquired, with no independent scale; ships developer tool and infrastructure service rather than the same layer.1 of 4 capabilitiesDifferent layerCompare B

BaiduPublicHopper and Baidu Qianfan both list model training; both also serve buyers who need to serve a model in production and train or fine-tune a model; Hopper's scale not recorded.2 of 4 capabilitiesShared product typeCompare H

HeyGenEarly-stageHopper and LiveAvatar do comparable work on speech to text and text to speech; Hopper's scale not recorded; ships API service, application and 1 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompare S

SpeechifyUndisclosedHopper and SpeechifyAI both list text to speech; scale not recorded for either; ships AI agent, API service and 1 more rather than the same layer.1 of 4 capabilitiesDifferent layerCompare T

TrueFoundryEarly-stageHopper and TrueFoundry AI Gateway both serve buyers who need to serve a model in production; scale not recorded for either; ships API service, agent platform and 2 more rather than the same layer.1 of 4 capabilitiesDifferent layerCompare E

ElasticPublicHopper and Elastic Inference Service both serve buyers who need to serve a model in production; Hopper's scale not recorded.1 of 4 capabilitiesShared product typeCompare T

TwilioPublicHopper and Conversation Relay do comparable work on speech to text and text to speech; Hopper's scale not recorded; ships API service, application and 3 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompare FR

Furhat RoboticsUndisclosedHopper and Furhat robot do comparable work on speech to text and text to speech; scale not recorded for either; ships application, platform and 1 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompare E

EncordUndisclosedHopper and Physical AI Data both serve buyers who need to train or fine-tune a model; scale not recorded for either; ships AI agent, agent platform and 2 more rather than the same layer.Different layerCompare C

CivitaiEarly-stageHopper and Civitai API both serve buyers who need to serve a model in production; scale not recorded for either; ships API service and platform rather than the same layer.1 of 4 capabilitiesDifferent layerCompare D

DecartLate-stageHopper and Cogito both serve buyers who need to serve a model in production; Hopper's scale not recorded.2 of 4 capabilitiesShared product typeCompare M

MiniMaxPublicHopper and MiniMax Open Platform both list text to speech; Hopper's scale not recorded.1 of 4 capabilitiesShared product typeCompare R

RespeecherEarly-stageHopper and Respeecher Space both list text to speech; scale not recorded for either; ships API service and application rather than the same layer.1 of 4 capabilitiesDifferent layerCompare MA

Murf AIEarly-stageHopper and Murf API both list text to speech; scale not recorded for either; ships API service and application rather than the same layer.1 of 4 capabilitiesDifferent layerCompare CS

Cerebras SystemsPublicHopper and Cerebras Inference both serve buyers who need to serve a model in production; Hopper's scale not recorded.2 of 4 capabilitiesShared product typeCompare A

AdobePublicHopper and Adobe Firefly Custom Models both list model training; both also serve buyers who need to train or fine-tune a model; Hopper's scale not recorded; ships AI agent, API service and 2 more rather than the same layer.4 of 4 capabilitiesDifferent 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.