Show HN: I built an LLM chat app because we shouldn't need 10 AI subscriptions

#1

Post by maniknt28 » Sun, Jul 13, 2025, 10:36 AM UTC

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?

Show HN: I built an LLM chat app because we shouldn't need 10 AI subscriptions
prismharmony.com

Re: Show HN: I built an LLM chat app because we shouldn't need 10 AI subscriptions

#2

Post by yellow_lead » Sun, Jul 13, 2025, 11:30 AM UTC

There's also https://t3.chat/

Re: Show HN: I built an LLM chat app because we shouldn't need 10 AI subscriptions

#3

Post by Simulacra » Sun, Jul 13, 2025, 11:32 AM UTC

One improvement that would interesting, if not in there already, is to compare the answers from the different LLMs, and then combine them into the highest probability statement.

Re: Show HN: I built an LLM chat app because we shouldn't need 10 AI subscriptions

#4

Post by woodylondon » Sun, Jul 13, 2025, 11:34 AM UTC

Good idea, and I also explored this idea and a year ago and also started building one, recognising a gap in the market for a solution that supports multiple LLMs, but also provides small businesses with a centralised managed AI client - billing, monitoring, logging, company prompts, etc.

Ultimately, I discovered https://www.typingmind.com, which offers all of these features. I am sure there are others - I was amazed that not more of these came out. Might be worth to see what they have built. The more of these that come out the better - its a whole new market.

Re: Show HN: I built an LLM chat app because we shouldn't need 10 AI subscriptions

#5

Post by iLoveOncall » Sun, Jul 13, 2025, 11:34 AM UTC

You should integrate with AWS bedrock, you'd be able to offer 60 models instantly without having to spend any time integrating with separate APIs: https://docs.aws.amazon.com/bedrock/latest/userguide/models-...