AI · alternatives · 2026
24 alternatives to Lemon Slice Live – Have a video call with a transformer model
Hey HN, this is Lina, Andrew, and Sidney from Lemon Slice. We’ve trained a custom diffusion transformer (DiT) model that achieves video streaming at 25fps and wrapped it into a demo that allows anyone to turn a photo into a real-time, talking avatar. Here’s an example conversation from co-founder Andrew: https://www.youtube.com/watch?v=CeYp5xQMFZY. Try it for yourself at: https://lemonslice.com/live. (Btw, we used to be called Infinity AI and did a Show HN under that name last year: https://news.ycombinator.com/item?id=41467704.) Unlike existing…
Lemon Slice Live lets users upload a photo to create a custom avatar for real-time video calls. The tool uses a custom diffusion transformer model that streams video at 25 frames per second, converting a static image… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1LU
Hey HN, we're the co-founders of LemonSlice (try our HN playground here: https://lemonslice.com/hn). 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://www.loom.com/share/941577113141418e80d2834c83a5a0a9 Chatbots 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…
Jan 2026 · its alternatives →
- 2IR
Hey HN, this is Lina, Andrew, and Sidney from Infinity AI (https://infinity.ai/). We've trained our own foundation video model focused on people. As far as we know, this is the first time someone has trained a video diffusion transformer that’s driven by audio input. This is cool because it allows for expressive, realistic-looking characters that actually speak. Here’s a blog with a bunch of examples: https://toinfinityai.github.io/v2-launch-page/ If you want to try it out, you can either (1) go to https://studio.infinity.ai/try-inf2, or (2)…
2024 · its alternatives →
- 3
Use generative AI to create future-facing videos
2022 · studio.d-id.com · its alternatives →
- 4
I built a voice agent from scratch that averages ~400ms end-to-end latency (phone stop → first syllable). That’s with full STT → LLM → TTS in the loop, clean barge-ins, and no precomputed responses. What moved the needle: Voice is a turn-taking problem, not a transcription problem. VAD alone fails; you need semantic end-of-turn detection. The system reduces to one loop: speaking vs listening. The two transitions - cancel instantly on barge-in, respond instantly on end-of-turn - define the experience. STT → LLM → TTS must stream. Sequential pipelines are dead on arrival for natural…
Mar 2026 · ntik.me · its alternatives →
- 5
Avaturn Live▲320AI avatars 9X faster, 4X expressive range w/, human fidelity
Nov 2025 · avaturn.live · its alternatives →
- 6
FastCut▲363Hi HN, We're two final-year college students from India, and we just launched FastCut – an AI tool to help creators, coaches, and marketers quickly edit there short form content (Reels, Shorts, TikToks) to make it more engaging. The goal is simple: Let users upload a raw video and get back a polished, engaging short in minutes — without touching a timeline. FastCut does the following: Automatically trims silences and filler content - Adds clean, animated captions using speech-to-text - Enhances audio - Pulls in relevant images (via Google Search), stock clips, stickers, and GIFs - Adds…
2023 · fastcutai.co · its alternatives →
- 7
Happyverse▲274Create an interactive AI video avatar of yourself!
Nov 2025 · happyverse.ai · its alternatives →
- 8
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- 10
LTX.bio▲164Hey HN, after our 13B release we've been working on a faster version of our open-source video model and we're excited to share it. We started with a 13B base model that already had competitive generation speeds (e.g. 55s for a 5s video on an H100 — faster than any other model out there). But we wanted to push it further to allow everyone to quickly iterate over their video generations. So we built a distilled version focused on speed without sacrificing temporal or spatial coherence. With the Distilled model, you can now generate 5-second 720p videos in about 9.5 seconds on an H100, and…
2021 · lightricks.com · its alternatives →
- 11
- 12
DeepReel▲191Hey HN! I'm Sahil, founder of DeepReel (https://deepreel.com). The Problem We're Solving We all know video is critical for growth and engagement, but creating it is a huge bottleneck. Creating professional videos still takes days or weeks per piece. Current AI video tools help, but they still make you juggle everything – you write scripts, choose visuals, pick music, make hundreds of micro-decisions. It's faster than agencies but nowhere near fast enough for scale. Our Background We started as an AI avatar company in 2023 and were the first startup to automate custom avatar…
2025 · deepreel.com · its alternatives →
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Viggle LIVE▲73An image + your webcam: transform into anyone in real time!
2025 · viggle.ai · its alternatives →
- 15
Vidnoz AI 2.8▲146100% free Synthesia alternative with video translation
2024 · vidnoz.com · its alternatives →
- 16
Transform your pictures into cartoons or custom styled arts
2022 · its alternatives →
- 17
CraftStory▲136Photorealistic human video, powered by compact AI
Jul 2026 · craftstory.com · its alternatives →
- 18
Lifecast▲74Convert any VR180 video/photo to 6DOF or Unreal Engine
2022 · github.com · its alternatives →
- 19
Using deep fake machine learning to create a video from an image and a source video.
2020 · myvoiceyourface.com · its alternatives →
- 20
Hi HN! We're proud to share Hotshot, a large-scale diffusion transformer model for text-to-video generation that we built with just a 4-person team. You can try it today in beta at https://hotshot.co, with 2 free generations per day. The model generates 5 seconds of 720p video from text prompts. It excels at prompt alignment, and consistency. It also excels at generating people, animals, and nature. In blind tests with 100 users, Hotshot generations were preferred to Runway ML 60% of the time. Hotshot generations were preferred to Luma 80% of the time. Overall, users preferred…
2024 · hotshot.co · its alternatives →
- 21
Daydream▲19I adapted VACE to work with real-time autoregressive video generation. Here's what it can do right now in real time: - Depth, pose, optical flow, scribble, edge maps — all the v2v control stuff - First frame animation / last frame lead-in / keyframe interpolation - Inpainting with static or dynamic masks - Stacking stuff together (e.g. depth + LoRA, inpainting + reference images) - Reference-to-video is in there too but honestly quality isn't great yet compared to batch Getting ~20 fps for most control modes on a 5090 at 368x640 with the 1.3B models. Image-to-video hits ~28 fps.…
2025 · daydream.live · its alternatives →
- 22
Clones Video▲25Turn ideas into videos featuring your face and voice
2025 · clones.video · its alternatives →
- 23
Realtime lifelike interactive avatars for conversational AI
Nov 2025 · liveavatar.com · its alternatives →
- 24
Hello HN! I would like to show our recent research project: DynamiCrafter. DynamiCrafter can animate open-domain still images based on text prompt by leveraging the pre-trained video diffusion priors. It supports: - Image-to-video generation - Storytelling video generation - Looping video generation - Generative frame interpolation We have released source code at https://github.com/Doubiiu/DynamiCrafter and deployed a demo at https://huggingface.co/spaces/Doubiiu/DynamiCrafter Please also refer to…
2023 · github.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →