ModelFusion

What it does

Simultaneously Chat with Leading LLM Models using MultiChat. Get several responses from GPT 4o, Claude 3.5, and more with a single prompt. Directly, compare LLM models. Additionally, chat with both images and documents by creating Projects.

Simultaneously chat with leading 23+ LLM models using MultiChat using ModelFusion.

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  Chat with multiple LLMs: o1-high-effort, Sonnet 3.5, GPT-4o, and more2025 · polychat.co · ▲62

  Hello HN! I was fed up switching between multiple UIs to ask GPT, Claude, etc… the same question and comparing the answers. So I built a way to ask multiple models the same question efficiently by having the LLM compare the responses and only show you new and valuable information from the 2nd model. This way you still get a fast response as normal from the 1st model, but also get any added value provided by the 2nd model. Initially I built my own UI to use this, but stumbled upon Open WebUI (formerly Ollama WebUI) which is fantastic, but is made more for local access to LLMs. So I talked to…

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  Chatgot2023 · chatgot.io · ▲214

  Chat freely, got every AI assistants here for you

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  Dolly2023 · github.com · ▲113

  Democratizing the magic of ChatGPT with open models

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  LLM Gateway ChatJun 2026 · lounge.llmgateway.io · ▲77

  One balance. Every model. Chat, image, video & audio.

• IB
  I built an LLM chat app because we shouldn't need 10 AI subscriptions2025 · prismharmony.com · ▲58

  I'm lost between ChatGPT vs Claude vs Gemini... which subscriptions to take? With Cursor and all these specific AI tools, I just wanted one simple chat app where I can use any model and pay only when I use it. Couldn't find one, so I built one. Pay only for what you use. Your prompts and docs, knowledge bases work with every model - no more copy-pasting between apps. Started as a personal project, but thought someone else might benefit from this too. https://prismharmony.com/chat What do you think?

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  AI Memory Layer for ChatGPT and Claude.2025 · teamlayer.xyz · ▲26

  Shared persistent memory across all your LLMs.

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  Spira Maxima▲578

  Video model that turns script into viral social media videos

  AI · 19d ago · spira.ai

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  Rill Browser▲540

  The browser where Claude Code and Codex work beside you

  AI · 19d ago · rill.love

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  Germany's new sovereign AI model Kolibri▲424

  Kolibri is Aleph Alpha

  AI · 21d ago · tej.as

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  Giving Opus 5.5 a simulated paint canvas▲392

  Paintings by AI models: programs run through a simulation of oil paint.

  AI · 22d ago · stillwet.art

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  Beam.win▲379

  Run AI agents on one Mac and use its windows on another

  AI · 6d ago · beam.win

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  FastRouter.ai▲364

  Route requests to the right LLM for cost, latency & quality

  AI · 23d ago · fastrouter.ai

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  Wordware▲9,848

  Your tool for building AI agents with natural language

  AI · 2024 · wordware.ai

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  If YouTube had actual channels▲2,741

  If Youtube had actual channels.

  Life & fun · 2024 · ytch.xyz

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  Me.bot▲1,627

  The inspiring companion for your life

  AI · 2024 · me.bot

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  Upmetrics AI▲1,197

  Business plan & financial forecast using AI

  Work · 2024 · upmetrics.co

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  Jupitrr AI▲1,195

  Jupitrr AI turns raw talking videos into scroll-stopping content for coaches and consultants. Research, script, record, edit, and publish in one app.

  AI · 2024 · jupitrr.com

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  InstantDB – A Modern Firebase▲1,145

  Hey there HN! We’re Joe and Stopa, and today we’re open sourcing InstantDB, a client-side database that makes it easy to build real-time and collaborative apps like Notion and Figma. Building modern apps these days involves a lot of schleps. For a basic CRUD app you need to spin up servers, wire up endpoints, integrate auth, add permissions, and then marshal data from the backend to the frontend and back again. If you want to deliver a buttery smooth user experience, you’ll need to add optimistic updates and rollbacks. We do these steps over and over for every feature we build, which can…

  Dev tools · 2024 · github.com