[{"data":1,"prerenderedAt":616},["ShallowReactive",2],{"project-46783600":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":9,"maker":10,"posted_at":11,"year":12,"points":13,"comments":13,"rank_in_year":14,"shown_in_year":15,"top":16,"tier":17,"category":18,"subcategory":19,"format":20,"keywords":21,"reception":26,"sentiment":27,"stance_mix":28,"scored_comments":33,"aspects":34,"strip":47,"post_text":49,"what":50,"said":103,"maker_in_thread":216,"shape":229,"grid":233,"attempts":577,"same_week":578,"maker_shows":42,"maker_hidden":607,"reader_version":608,"card":609},"46783600","LemonSlice","Upgrade your voice agents to real-time video","title","Show HN: LemonSlice – Upgrade your voice agents to real-time video",null,"lcolucci",1769536515,2026,133,494,4366,12,"notable","ai","video avatar model","api",[22,23,24,25],"video avatar","real-time video generation","interactive avatar","voice agent video","curious",0.177,{"positive":29,"neutral":30,"mixed":31,"critical":32},28,46,1,14,89,{"idea":35,"performance":38,"execution":40,"pricing":43,"design":45,"docs":46},{"positive":36,"critical":37},8,6,{"positive":39,"critical":31},4,{"positive":41,"critical":42},2,3,{"positive":44,"critical":44},0,{"positive":31,"critical":41},{"positive":31,"critical":31},[31,44,48,48,39,42,42,48,42,39,48,42,42,31,42,48,42,41,31,42,48,42,42,42,48,48,42,48,41,31,48,48,39,39,42,48,31,48,31,31],5,"Hey HN, we're the co-founders of LemonSlice (try our HN playground here: https:\u002F\u002Flemonslice.com\u002Fhn). We train interactive avatar video models. Our API lets you upload a photo and immediately jump into a FaceTime-style call with that character. Here's a demo: https:\u002F\u002Fwww.loom.com\u002Fshare\u002F941577113141418e80d2834c83a5a0a9\n\nChatbots are everywhere and voice AI has taken off, but we believe video avatars will be the most common form factor for conversational AI. Most people would rather watch something than read it. The problem is that generating video in real-time is hard, and overcoming the uncanny",{"problem":51,"audience":57,"pricing":69,"motivation":73,"time_to_build":9,"stack":77,"openness":100,"stage":101,"team_size":102},{"value":52,"source":53,"evidence":54},"Generating real-time conversational video avatars that look convincing is hard.","maker",[55],{"id":56},"post",{"value":58,"source":59,"evidence":60},"Developers building voice agents and teams doing training or roleplay.","commenter",[61,65],{"id":62,"by":63,"text":64},"46783963","sid-the-kid","hey HN! one of the founders here. as of today, we are seeing informational avatars + roleplaying for training as the most common use cases. The roleplaying use-case was…",{"id":66,"by":67,"text":68},"46783887","zvonimirs","We're launching a new AI assistant and I wanted to make it alive so I started to play around with LemonSlice and I loved it!! I wanted to make our assistant be like a coworker…",{"value":70,"source":53,"evidence":71},"Usage-based at $0.12-0.20\u002Fmin for video generation",[72],{"id":56},{"value":74,"source":53,"evidence":75},"Belief that video avatars will be the most common form factor for conversational AI.",[76],{"id":56},[78,82,88,94],{"value":79,"source":53,"evidence":80},"Diffusion transformer (20B parameters)",[81],{"id":56},{"value":83,"source":53,"evidence":84},"Qwen as default LLM",[85],{"id":86,"by":10,"text":87},"46785676","Qwen is the default but you can pick any LLM in the web app (though not the HN playground)",{"value":89,"source":59,"evidence":90},"ElevenLabs for TTS in hosted version",[91],{"id":92,"by":63,"text":93},"46784434","Good question. When using the API, you can bring any voice agent (or LLM). Our API takes in what the agent will say, and then streams back the video of the agent saying it. For…",{"value":95,"source":53,"evidence":96},"LiveKit integration",[97],{"id":98,"by":10,"text":99},"46786768","This is a good point on audio. Our main priority so far has been reducing latency. In service of that, we were deep in the process of integrating Hume's two-way S2S voice model…","paid","launched","team",{"praise":104,"objections":127,"requests":153,"questions":182,"alternatives":198},[105,120],{"value":106,"source":59,"evidence":107},"Impressive real-time quality and latency",[108,112,116],{"id":109,"by":110,"text":111},"46786545","korneelf1","Wow this is really cool, haven't seen real-time video generation that is this impressive yet!",{"id":113,"by":114,"text":115},"46805007","slake","That's amazing. Feels like a major step ahead. No lag, very snappy. Outstanding work. Feels like those sci-fi shows where you can talk to Hari Seldon even though he lived like a…",{"id":117,"by":118,"text":119},"46784780","r0fl","Wow this is the most impressive thing I’ve seen on hacker news in years!!!!! Take my money!!!!!!",{"value":121,"source":59,"evidence":122},"Much better than competing avatar products",[123],{"id":124,"by":125,"text":126},"46789394","swyx","this is like Tavus but it doesnt suck. congrats!",[128,142],{"value":129,"source":59,"evidence":130},"Photorealistic avatars enable deception and harm",[131,135,139],{"id":132,"by":133,"text":134},"46793118","anigbrowl","Absolutely Do Not Want. EDIT: Tell us what characters you want to see in the comments and we can make them for you to talk to (e.g. Max Headroom) Sure, that kind of thing is…",{"id":136,"by":137,"text":138},"46812127","zestyping","The primary purpose of generating real-time video of realistic-looking talking people is deception. The explicit goal is to make people believe that they're talking to a real…",{"id":140,"by":137,"text":141},"46812274","When you generate real-time video of realistic-looking talking characters, the definition of success is fooling people into believing they are talking to a real person when they…",{"value":143,"source":59,"evidence":144},"Latency and turn-taking feel unnatural compared with speech-to-speech models",[145,149],{"id":146,"by":147,"text":148},"46794156","armcat","This is so awesome, well done LemonSlice team! Super interesting on the ASR->LLM->TTS pipeline, and I agree, you can make it super fast (I did something myself as a 2-hour hobby…",{"id":150,"by":151,"text":152},"46790331","jonsoft","I asked the Spanish tutor if he\u002Fit was familiar with the terms seseo[0] and ceceo[1] and he said it wasn't, which surprised me. Ideally it would be possible to choose which…",[154,164,175],{"value":155,"source":59,"evidence":156},"Add Max Headroom and other characters",[157,161],{"id":158,"by":159,"text":160},"46785028","wumms","You could add a Max Headroom to the hn link. You might reach real time by interspersing freeze frames, duplicates, or static.",{"id":162,"by":63,"text":163},"46785214","And, just like that, Max Headroom is back: https:\u002F\u002Flemonslice.com\u002Ftry\u002Fagent_ccb102bdfc1fcb30",{"value":165,"source":59,"evidence":166},"Open weights or local runnable model",[167,171],{"id":168,"by":169,"text":170},"46793321","mdrzn","\"we're releasing our new model\" is it downloadable and runnable in local? Could I create a \"vTuber\" persona with this model?",{"id":172,"by":173,"text":174},"46801369","dsrtslnd23","where can I find the 20B model? it sounded like it would be open - but I am not sure with the phrasing...",{"value":176,"source":59,"evidence":177},"Speech-to-speech voice support such as PersonaPlex",[178],{"id":179,"by":180,"text":181},"46786357","pickleballcourt","One thing I've learnt from movie production is actually what separates professional from amateur quality is in the audio itself. Have you thought about implementing personaplex…",[183,191],{"value":184,"source":59,"evidence":185},"Is the 20B model open weights?",[186,190],{"id":187,"by":188,"text":189},"46788924","peddling-brink","I got really excited when I saw that you were releasing your model. > Today we're releasing our new model* - Lemon Slice 2, a 20B-parameter diffusion transformer that generates…",{"id":172,"by":173,"text":174},{"value":192,"source":59,"evidence":193},"How does it differ from anam.ai?",[194],{"id":195,"by":196,"text":197},"46849169","Obertr","Have just tried it. Impressive. We are definitely moving into this space Questions what are the main differences between you and anam.ai ? They also do real time lip sync plus…",[199,203,207,212],{"value":200,"source":59,"evidence":201},"Tavus",[202],{"id":124,"by":125,"text":126},{"value":204,"source":59,"evidence":205},"anam.ai",[206],{"id":195,"by":196,"text":197},{"value":208,"source":59,"evidence":209},"NVIDIA PersonaPlex",[210,211],{"id":179,"by":180,"text":181},{"id":150,"by":151,"text":152},{"value":213,"source":59,"evidence":214},"Sesame",[215],{"id":146,"by":147,"text":148},{"comments":217,"answered":218,"key":219},31,10,[220,223,226],{"id":221,"text":222},"46798902","Well put - and thanks, we'll keep building. Still chasing this level of magic: https:\u002F\u002Fyoutu.be\u002FgL5PgvFvi8A?si=I__VSDqkXBdBTVvB&t=173 Not to mention language tutors, training…",{"id":224,"text":225},"46941918","I don't think that's the primary purpose of realistic interactive avatars, any more than deception is the purpose of CGI. Deception requires intent to mislead — if users know…",{"id":227,"text":228},"46798996","This is good feedback thanks! The \"not patient\" feeling probably comes from our VAD being set to \"eager mode\" so that the latency is better. 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