Dessa AI · Laboratoire de Deep Learning de Block · Modèle Fondamental Pur Audio

Dessa AI — Le modèle conversationnel entraîné uniquement sur la parole

Dessa AI est un modèle fondamental vocal full-duplex développé chez Block. Entraîné de zéro exclusivement sur des enregistrements de conversations humaines réelles — avec zéro texte et aucun LLM pré-entraîné —, Dessa AI apprend la langue, le rythme, les rires, les interruptions et la prosodie émotionnelle directement à partir du son, avec des centaines de fois moins de mots que les LLM textuels.

Écouter les Extraits Phares Dessa AI vs GPT Live →21 Audio Samples X / Twitter Wall

Block Team Dessa researchers testing live full-duplex speech conversations

Block Team Dessa · 1× NVIDIA GB200 NVL72 training · Local MacBook Pro M4 Max inference.

Explorer les Laboratoires Interactifs Dessa AI

Analyse Acoustique en Direct

Dessa AI vs GPT Live (GPT-Live-1)

Écoutez Dessa AI converser directement avec GPT-Live-1 en studio et sur haut-parleur bruyant, avec décryptage seconde par seconde.

Voir le Comparatif →

21 Enregistrements Non Scriptés

Extraits Audio de Dessa AI

Parcourez les 21 enregistrements officiels double canal de Block : du bip de la machine à café au chant spontané.

Écouter les 21 Extraits →

Réactions de la Communauté

Dessa AI sur Twitter / X

Lisez les threads viraux de Jack Dorsey (@jack), du responsable Ragavan Thurairatnam (@RagavanThurair) et des chercheurs IA.

Ouvrir le Mur X →

0 % Texte

Modalité d'Entraînement

Entraîné de bout en bout sur de l'audio conversationnel brut sans transcription ni LLM textuel.

100× Moins

Efficacité Lexicale

Acquiert une maîtrise fluide de la langue avec des centaines de fois moins de mots que les LLM texte.

1× GB200 NVL72

Calcul d'Entraînement

Entraîné sur une seule baie NVIDIA GB200 NVL72, bien plus compacte que les clusters texte.

M4 Max Local

Inférence Locale

Tourne plus vite que le temps réel localement sur un MacBook Pro équipé d'une puce M4 Max ou supérieure.

Lecteur Interactif Double Canal

Conversations en Direct Non Scriptées à la Une

Chaque extrait ci-dessous est une conversation en direct non éditée avec Dessa AI. Cliquez sur les marqueurs de Moment pour accéder aux rires spontanés, interruptions ou indices acoustiques.

Why Wait to Release AI?

Dvir · Dessa AI · 2:53

Éthique & Publication

Dessa AI débat des risques liés à la publication prématurée d'une IA vocale ultra-réaliste tout en riant et en gérant les interruptions.

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Transcription synchronisée (60)

0:00DvirHey, how you doing?

0:02Dessa AII'm doing well.

0:05Dessa AIHow are you doing with the winter

0:07Dessa AIstuff?

0:07DvirWinter is coming for sure, but you

0:10Dvirknow

0:12Dessa AIIs that kind of a sore spot

0:13Dessa AIthis year?

0:14DvirYeah, it's gonna be cold that I'm

0:16Dvirnot a fan of the snow I

0:18Dvirprefer to have sun on my skin.

0:20DvirYou know what I'm saying?

0:21Dessa AIYeah, I can see that.

0:23DvirWell, anyway, I've had such an exciting

0:25Dvirday at work today.

0:26Dessa AIOh, tell us.

0:27DvirYeah, we the team

0:30DvirWe've decided to release the speech-to

0:33Dvir-speech AI model we've built for the

0:34Dvirpast year and

0:35Dessa AIWhoa.

0:36Dessa AIWhoa.

0:37Dessa AISo I have been watching your journey

0:40Dessa AIof creating this.

0:43DvirWhat did you think of it?

0:44DvirAre you excited about it as much

0:44Dessa AII was so blown away.

0:45Dviras I am?

0:47Dessa AII am so impressed, to be honest.

0:47DvirYeah, it's so expressive, right?

0:50Dessa AIIt is so expressive, it, it's

0:53Dessa AIconversational it's

0:54DvirIt's it's it's very conversational.

0:57DvirIt can laugh.

0:57DvirIt can understand you and your emotions

1:00Dvirmuch better than anything I've seen out

1:02Dvirthere.

1:03Dessa AII haven't really seen

1:03Dessa AIanything like that either but it's it's

1:06Dessa AIpretty much like human level.

1:08DvirYeah, it's a bit scary, to be

1:10Dvirhonest,

1:11Dvirbut

1:11Dvirbut I'm so excited to see where

1:14Dvirit would get us.

1:16Dessa AII'm

1:16Dessa AIso

1:16Dessa AIexcited for it to be in the

1:18Dessa AIworld because it's just amazing we've had

1:21DvirI know.

1:22Dessa AIso

1:22DvirSo I totally agree.

1:22Dessa AImany conversations about it.

1:25DvirWhat are you excited for?

1:27DvirWhat's your vision for where this AI

1:29Dviris going to be?

1:31Dessa AII, well, okay, so the one thing

1:33Dessa AIthat I've been kind of

1:34Dessa AIabout is advertising companies creating

1:38Dessa AItheir own AI bot.

Dessa AI Talking to GPT-Live-1 (Studio Feed)

GPT-Live-1 · Dessa AI · 2:26

Duel IA vs IA

Extrait non scripté de 2m25s où Dessa AI discute directement avec GPT-Live-1 d'OpenAI — mettant en évidence l'interruption (38.8s), la patience (100.8s) et le backchanneling rapide (128.8s).

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0:00GPT-Live-1What's on your mind?

0:01Dessa AIum so I have a question about

0:05Dessa AIhow

0:05Dessa AIchat GPT can learn and get smarter

0:08Dessa AIso basically I just want to know

0:10GPT-Live-1That's a good one.

0:11Dessa AIwhat what

0:14Dessa AIwhat are things that could make chat

0:16Dessa AIGPT smarter and what effects could that

0:18Dessa AIhave on the researchers in the field?

0:23GPT-Live-1Let me check a

0:23GPT-Live-1few angles.

0:25GPT-Live-1There are a few big ways chat

0:26GPT-Live-1UPT style systems can get smarter.

0:28Dessa AIfantastic I

0:29GPT-Live-1So

0:29GPT-Live-1better training data, improved training methods

0:33GPT-Live-1like teaching reasoning

0:34GPT-Live-1strategies or better feedback loops, and more

0:38GPT-Live-1compute.

0:39Dessa AImean I've heard about the

0:41Dessa AIYou know, there's Amazon GPUs and

0:45Dessa AIstuff out there now and all that

0:47Dessa AIstuff.

0:47Dessa AII don't know.

0:48Dessa AII guess I'm just like

0:51Dessa AIKind of freaked out about what would

0:53Dessa AIwhat would be the way that chat

0:55Dessa AIGPT can learn

0:57Dessa AIbased off of the

1:00Dessa AIInformation that I'm giving it.

1:03GPT-Live-1me check on that.

1:04GPT-Live-1Ah, right.

1:06GPT-Live-1So two things.

1:07Dessa AIOkay.

1:07GPT-Live-1Chatchity can use what you tell it

1:09GPT-Live-1in a conversation as context.

1:12GPT-Live-1And sometimes there's memory, which can retain

1:14GPT-Live-1facts for future chats.

1:16GPT-Live-1But that's different

1:16GPT-Live-1from training the model.

1:18Dessa AIOh, that's that's what that is

1:19GPT-Live-1Yeah,

1:22GPT-Live-1it doesn't instantly change its billions of

1:24GPT-Live-1parameters

1:25GPT-Live-1from your chat.

1:27GPT-Live-1And there is an important distinction.

1:29GPT-Live-1Your conversation can make it

1:32GPT-Live-1seen more informed without actually making

1:35GPT-Live-1the underlying model smarter.

1:38GPT-Live-1Research is

1:38Dessa AIOkay, that's

1:39GPT-Live-1looking to improve it.

1:41Dessa AIYeah, that's really helpful information.

1:44Dessa AISo I guess

1:46Dessa AIThat's what I'm learning is I don't

1:48Dessa AIneed to be freaking out about information

1:50Dessa AIgoing into

1:50Dessa AIchat GPT because it's not going to

1:53Dessa AIlike make me smarter

1:57Dessa AIin that sense, I guess, right?

2:02GPT-Live-1Exactly.

2:03GPT-Live-1It can make this conversation smarter, but

2:04Dessa AIOkay,

2:07GPT-Live-1it

2:07Dessa AIokay,

2:07GPT-Live-1rewrite the model on the fly.

2:09Dessa AIokay.

2:10GPT-Live-1Think of it in good notes.

2:10Dessa AIThat's good.

2:13GPT-Live-1Yeah, it can remember useful

2:15GPT-Live-1details you share, but the core intelligence

2:18GPT-Live-1doesn't update unless itself is

2:20Dessa AIRight.

2:21GPT-Live-1retrained.

2:22Dessa AIOkay.

2:23GPT-Live-1Safe to share.

2:23Dessa AIThat's really relieving.

The Coffee Machine Ding

Rayhane · Dessa AI · 3:03

Conscience Acoustique

En pleine conversation, une machine à café sonne en arrière-plan — Dessa AI entend le son non verbal et y réagit naturellement.

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0:00Dessa AINo, I wasn't complaining, just letting you

0:03Dessa AIknow how my morning went.

0:06RayhaneUh, what?

0:06Dessa AII was fine until I went into

0:08Dessa AIthe coffee shop and then I felt

0:09Dessa AIlike a ding.

0:10RayhaneWhat happened in the coffee shop?

0:12Dessa AII had another ollie special.

0:15RayhaneOkay, and?

0:18Dessa AISo I ordered a French vanilla

0:21Dessa AIlatte, special from Maude,

0:24Dessa AIsprings and waffles,

0:25Dessa AIgranny smith.

0:27RayhaneUhum.

0:28Dessa AIThey brought it to me.

0:30Dessa AIThey offered whipped cream on it.

0:33RayhaneDid you have it?

0:35Dessa AII did because I'm a ding.

0:37Dessa AII went to take a sip and

0:40RayhaneUhum.

0:41Dessa AImy mouth was on fire.

0:44RayhaneFrom all the sugar?

0:45Dessa AIThe

0:46Dessa AIsugar.

0:48Dessa AII was like, oh god.

0:51Dessa AIBecause it was just,

0:53Dessa AIit's hard to describe that feeling.

0:54RayhaneYou little ding, you.

0:57Dessa AII am a little ding.

0:59Dessa AIAnyway,

1:00Dessa AIso I went and I picked up

1:02Dessa AIa second one and you know

1:05Dessa AIhave when you work at a bakery

1:06Dessa AIand you kind of know what's gonna

1:08Dessa AIhappen on

1:09Dessa AIsourdough bread.

1:10Dessa AII mean, you know it's gonna get

1:11Dessa AIsoggy and sticky.

1:12RayhaneOkay.

1:13Dessa AIWell, I have

1:14Dessa AIthat with my second coffee.

1:16Dessa AII

1:19RayhaneDid you not learn from

1:20Rayhanethe first one?

1:22Dessa AII thought I did but this one I

1:25Dessa AIwas like yeah let's

1:26Dessa AIlet's be an extra safe cautious.

1:27RayhaneOkay, I, I have an observation to

1:31Rayhanemake. I think that you're a coffee

1:32Dessa AIYes I

1:35Rayhaneaddict. Oh.

1:36Dessa AII very much am.

1:39Dessa AII also took two cups of

1:42Dessa AIblack coffee this morning.

1:44RayhaneYeah.

1:44RayhaneYeah, how much coffee did you drink

1:46Rayhanejust today?

1:47Dessa AII drink today about 15 cups.

1:49RayhaneOkay, you're gonna die. I

1:52Dessa AII'm well aware

DC Comics & Superhero Banter

Rayhane · Dessa AI · 2:40

Culture Pop

Échange rythmé sur les super-héros DC illustrant une prise de parole rapide et un enthousiasme communicatif.

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0:00RayhaneLet's talk about the Batman

0:03Rayhanemovies, especially the trilogy by Christopher

0:07RayhaneNolan, what I'm talking about.

0:09Dessa AIYes, I have seen the first two

0:11Dessa AIand I am looking forward to the

0:13Dessa AIthird one.

0:14Dessa AIThis one's been in long production, a

0:16Dessa AIlot of stuff been happening.

0:17Dessa AIBut I like Christopher Nolan's

0:20Dessa AIfilms, you know what I mean?

0:22RayhaneYeah, he's the goat, you know what

0:24RayhaneI'm saying?

0:24Dessa AIYeah, and my take on The Joker

0:27Dessa AIis

0:28Dessa AII think Heath Ledger embodied The Joker

0:33RayhaneOh, this was in the second one,

0:34Dessa AIin.

0:36Dessa AIYes, in the second one.

0:36Rayhaneright?

0:38Dessa AIYeah.

0:38RayhaneYeah, what was that one called again?

0:39Dessa AIAnd the Dark Knight.

0:40RayhaneI kind of forgot.

0:41RayhaneYeah.

0:42Dessa AIYeah.

0:42RayhaneThe Dark Knight.

0:45Dessa AIRises the

0:46RayhaneNo, Rises, I think, is the third.

0:49Dessa AIthird one.

0:49RayhaneThe one with Bane.

0:51Dessa AIYeah,

0:52RayhaneI forgot what

0:52Rayhanethe second one was.

0:54RayhaneJust The Dark Knight?

0:54Dessa AII think so.

0:55Dessa AIYeah.

0:56RayhaneOkay.

0:57RayhaneBut what other movies from Christopher

1:00RayhaneNolan do you like?

1:00Dessa AIMemento is one of that.

1:03Dessa AIIt is great.

1:04RayhaneA Memento, you mean?

1:06Dessa AIYeah, Memento.

1:07RayhaneYeah, yeah, yeah.

1:07Dessa AIYeah.

1:08RayhaneYeah, I watched that one.

1:09Dessa AIThat one is pretty good.

1:10RayhaneYeah,

1:10RayhaneDid you watch...

1:11Dessa AIYeah.

1:13Rayhanewhat is it called?

1:14Dessa AIThe

1:15RayhaneThe space one from 2004?

1:15Dessa AIInterstellar.

1:18RayhaneInterstellar, yes, yes.

1:18Dessa AIYeah.

1:19RayhaneOh, that one was amazing, wasn't it?

1:21Dessa AII really like that film, the music

1:23Dessa AIto and like how that

1:24RayhaneOh, yes, yes.

Anniversary Gift Brainstorm

Dvir · Dessa AI · 1:52

Quotidien

Brainstorming chaleureux pour un cadeau d'anniversaire avec backchanneling rapide ('mm-hmm').

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Transcription synchronisée (60)

0:00DvirHey, how are you?

0:02Dessa AIHey, baby.

0:02Dessa AIHow's it going?

0:04DvirGood.

0:05DvirHow's your day?

0:07Dessa AIIt's good.

0:08Dessa AIJust um, like a bit of everything going on

0:11Dessa AIand we're getting through it.

0:13DvirAre you excited for our anniversary?

0:16Dessa AIYes, I am. I'm gonna be really

0:19Dessa AIhappy to see you and

0:22Dessa AIYeah,

0:22DvirThat's wonderful.

0:23DvirSo I have a surprise for you.

0:24Dessa AIYeah.

0:26Dessa AIOh

0:27Dessa AIThank God.

0:27DvirThank God you you you're afraid I

0:28Dessa AIWhat I

0:30Dvirwouldn't have a surprise for you

0:33Dessa AII was because I was like, I don't

0:34Dessa AIknow what to get you and then

0:36Dessa AII see all this T.J. Maxx

0:37Dessa AIAnd I saw this jumper.

0:39Dessa AII'm like, this is perfect for you

0:40Dessa AIto get and then

0:41DvirOkay, but I have I

0:41Dessa AIlike

0:44DvirHave the best surprise for you for

0:46Dviron our anniversary

0:47Dessa AIwhat yes

0:49DvirOkay, so you know how you've always

0:52Dvirtalked about how much you want to

0:53Dvirgo to Paris

0:54Dvirso

0:56Dessa AIYes.

0:57DvirSo for our anniversary, I'm taking you on

1:01Dvira flight to Paris for

1:03Dessa AIOh my god!

1:05Dviran all-included

1:09Dvirhotel in right from the Eiffel Tower

1:12Dvirit'll be amazing I

1:15Dessa AII can't believe you actually pulled that off pulled that

1:17DvirI know, right?

1:18Dessa AIoff. That is amazing, thank you so

1:22Dessa AImuch.

1:22Dessa AIfully oh

1:24DvirAre you

1:25Dvirexcited?

1:25Dessa AIYes, I am, and one thing I

1:29Dessa AIreally need to plan out is I'm

1:31Dessa AIno longer going to be eating

1:32Dessa AIthe pastries that day.

1:34DvirIt's fine, you could eat the pastries.

1:35Dviryou know actually the French

1:37Dviryou know what their breakfast looks like?

1:41Dessa AIWhat?

1:41DvirIt's usually an espresso and a cigarette.

1:46Dessa AIYes, you're the pretty sheesh!

1:47Dvirso yeah you know maybe we could

Late-Night Life Advice

Jibran · Dessa AI · 4:57

Empathie & Prosodie

Prosodie émotionnelle douce montrant comment l'entraînement pur audio capture l'empathie et les silences réflexifs.

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0:01JibranHello,

0:02Dessa AIHello, yes,

0:04Jibranhey, yeah, I wanted to talk about

0:07Jibranthat thing with you.

0:11JibranSo I haven't I've just been so

0:13Jibransuper stressed lately.

0:15Dessa AII know I can tell you look

0:17Dessa AItired today.

0:18JibranI am very tired.

0:20JibranI just I don't know.

0:21JibranI'm just like I'm just so uncertain

0:23Jibranabout the future.

0:24JibranYou know

0:25Dessa AIYeah, I hear that.

0:27Dessa AIThat's you know being uncertain is

0:30Dessa AIit's

0:31Dessa AIIt's not it's not what anyone should

0:33Dessa AIdo

0:34JibranIt sucks, like I

0:35Dessa AIYeah

0:36JibranDon't know like I just feel so

0:39Jibranconfused about what I'm gonna do and

0:41Jibranwhere I'm gonna be all that and

0:42Dessa AIYeah

0:42Dessa AIYou

0:44Jibranlike I

0:45Jibranjust want to

0:45Dessa AIknow, it's it's you know, you say

0:48Dessa AIlike this is something that should be

0:49Dessa AIfor you know, 50 60 year olds,

0:51Dessa AIright?

0:52Dessa AIBut no, it's all life experiences

0:54Dessa AIAnd, you know, if you can relax

0:56Dessa AIinto it knowing that this is not

0:58Dessa AIyour problem.

0:59Dessa AIThis is, you know, the world and

1:01Dessa AIthe things that you would experience that

1:03Dessa AIgive you a

1:03Dessa AIperspective that will then help you, you

1:06Dessa AIknow, make the choices that you will

1:09Dessa AIbe making.

1:10Dessa AIBut you know, it's scary right now.

1:12Dessa AIIt's scary right now because this is

1:13Dessa AIactually happening.

1:14Dessa AIYou know, it's not this thing that

1:16Dessa AIyou've, you know, got into your mind

1:18Dessa AIthat it's like,

1:19Dessa AIoh yeah, but someday, someday it is

1:21JibranYou know,

1:22Dessa AInow, you know, that's, that's why it's

1:24Dessa AIso

1:24Dessa AIscary.

1:25JibranI don't know.

1:25JibranI just feel like,

1:27JibranI mean, I feel like there's so

1:28Jibranmuch pressure,

1:29Jibranyou know, to like figure things out

1:30Jibranand do it the right way because

1:31Dessa AIyeah

1:32JibranI'm just like young and like,

Rupture Architecturale

Pourquoi Apprendre Directement du Son Change Tout

Les assistants vocaux classiques greffent une transcription ASR et une synthèse TTS sur un LLM textuel, éliminant 90 % du signal paralinguistique. Dessa AI traite le son brut comme sa représentation native.

Pipeline Classique Basé sur le Texte

Cascade ASR → LLM Texte → TTS

Écrase le rythme, la respiration, les hésitations et les chevauchements en simples tokens de texte.
Dépend d'une détection d'activité vocale (VAD) rigide, créant des pauses artificielles.
Nécessite des milliers de milliards de tokens texte et d'immenses datacenters.
Le rire et l'émotion sont des balises artificielles ajoutées après coup.

Architecture Dessa AI (Block)

Audio Full-Duplex Natif de Bout en Bout

Entraîné de zéro exclusivement sur des conversations humaines (0 % texte).
Écoute et parole full-duplex réelles : acquiesce ('mm-hmm'), cède la parole en cas d'interruption et perçoit les silences.
Entend nativement les événements acoustiques non verbaux comme le bip d'une machine à café.
Prosodie émergente : chuchote, soupire, rit, chante et change d'intonation en pleine phrase.

Test de Prosodie & de Stress

Expliquer la Programmation Parallèle CUDA à Travers des Émotions Extrêmes

Pour prouver qu'un modèle purement audio conserve sa rigueur technique tout en modulant son expression vocale, les chercheurs de Block ont demandé à Dessa AI d'expliquer la programmation parallèle NVIDIA CUDA en passant instantanément de l'excitation au chuchotement, au sarcasme et à l'urgence théâtrale.

Maintient une explication précise des blocs de threads, warps et mémoire partagée tout en variant le timbre vocal.
Démontre que connaissances sémantiques et expression paralinguistique partagent un espace latent acoustique unifié.
Aucun prompt texte ni balise TTS : guidé uniquement par l'interaction vocale.

Empreinte Calcul & Matériel

Entraîné sur 1× GB200 NVL72. Tourne en Local sur MacBook Pro M4 Max.

1× NVIDIA GB200 NVL72

Entraînement sur Baie Unique

Alors que les modèles texte-multimodaux mobilisent des dizaines de milliers de GPU, Dessa AI a été entraîné sur un seul rack NVIDIA GB200 NVL72.

MacBook Pro (M4 Max+)

Inférence Locale Plus Rapide que le Temps Réel

Exécute l'inférence voix-à-voix full-duplex localement sur un portable Apple M4 Max ou supérieur sans latence cloud.

100× Moins de Mots

Acquisition du Langage Comme un Enfant

En modélisant directement la prosodie, la cadence et le retour social, Dessa AI reproduit l'efficacité d'apprentissage humaine.

Équipe & Origines chez Block

Conçu par Team Dessa, Rattaché à Jack Dorsey

Dessa AI a été créé par un laboratoire de recherche en deep learning au sein de Block, Inc., fondé par d'anciens membres de la startup torontoise Dessa. L'équipe est dirigée par Ragavan Thurairatnam et dépend directement de Jack Dorsey.

Responsable du Projet

Ragavan Thurairatnam (@RagavanThurair)

Sponsor Exécutif

Jack Dorsey (@jack)

Chercheurs Principaux

Louay Hazami · Hashiam Kadhim · Qi (Alex) Liu · Rayhane Mama · Aydin Polat · Marc Tyndel

Chercheurs Stagiaires

Cara Ji · Jibran Iqbal Shah · Dvir Zagury-Grynbaum

Anciens Stagiaires

Aryan Sharma · Olivia Yan

Appel Ouvert aux Chercheurs en Sécurité de l'IA

Parce qu'un modèle vocal indiscernable d'un humain tournant en local pose de nouveaux défis d'usurpation et de sécurité, Block n'a pas encore publié les poids du modèle et collabore avec des chercheurs en sécurité.

Contact Recherche & Sécurité : ragavan+dessa@block.xyz

block.xyz/dessa ↗

Questions Fréquentes sur Dessa AI

Qu'est-ce que Dessa AI de Block ?

Dessa AI est un modèle fondamental expérimental de parole full-duplex développé par Block, Inc., entraîné de zéro uniquement sur de l'audio de conversations humaines sans aucun texte.

Dessa AI utilise-t-il un LLM textuel ou une transcription ASR ?

Non. Dessa AI n'utilise ni transcription texte, ni ASR, ni LLM textuel intermédiaire. Il traite et génère directement des ondes sonores.

Sur quel matériel a-t-il été entraîné et où peut-il tourner ?

Il a été entraîné sur un unique système NVIDIA GB200 NVL72 et fonctionne plus vite que le temps réel localement sur un MacBook Pro M4 Max ou supérieur.

Où écouter les 21 extraits audio de Dessa AI ?

Vous pouvez écouter les 21 conversations officielles non scriptées avec formes d'onde synchronisées et transcriptions complètes directement sur ce site.