unlimitedai.sh

Unlimited AI chat

Unlimited AI chat. Your app, our models.

Want a ChatGPT-style chat without message caps? UnlimitedAI is an API key, not a chat website — paste it into a chat app you like and talk to Claude, GPT, DeepSeek, GLM, Qwen and Kimi with no token counting. Setup takes about a minute.

What makes this unlimited AI chat

  • →No per-message or per-token billing — one flat price for 24 hours or 30 days
  • →No usage window that locks you out after a few hours of chatting
  • →Switch between 17 models in the same chat app
  • →Up to 1M-token context for long documents and codebases
  • →Your plan sets how many replies run at the same time: 8 or 16

Open WebUI

  • →Open Admin Panel → Settings → Connections
  • →Under OpenAI API, add a connection
  • →URL: https://api.unlimitedai.sh/v1
  • →Key: your UnlimitedAI key (sk-xx)
  • →Save — the models appear in the model picker

LibreChat

librechat.yaml
endpoints:
  custom:
    - name: "UnlimitedAI"
      apiKey: "sk-xx"
      baseURL: "https://api.unlimitedai.sh/v1"
      models:
        default: ["anthropic/claude-sonnet-5", "openai/gpt-6-luna", "deepseek/deepseek-v4-pro-0813"]
        fetch: true

LobeChat

  • →Open Settings → Language Model → OpenAI
  • →API Key: sk-xx
  • →API proxy URL: https://api.unlimitedai.sh/v1
  • →Add the model IDs you want to the model list, e.g. anthropic/claude-opus-4.8

Chatbox and other chat apps

  • →Add a custom provider of type “OpenAI API compatible”
  • →API host / base URL: https://api.unlimitedai.sh/v1
  • →API key: sk-xx
  • →Model: any ID from the model list, e.g. z-ai/glm-5.3 or moonshotai/kimi-k3
  • →Any chat app that accepts a custom OpenAI base URL works the same way

Which model to chat with

  • →Best writing and reasoning: anthropic/claude-opus-4.8 or anthropic/claude-sonnet-5.5
  • →Fast everyday answers: deepseek/deepseek-v4.1-flash or z-ai/glm-5.3-flash
  • →Very long documents: moonshotai/kimi-k3 or qwen/qwen3.8-max
  • →All 17 Models and Ultron only: anthropic/claude-opus-5.5, openai/gpt-6.1-sol, openai/gpt-6-astra

Good to know

  • →UnlimitedAI does not host a chat website — you use your own chat app
  • →UnlimitedAI is independent and not affiliated with Anthropic, OpenAI or the chat apps above
  • →Keys are for one person; sharing a key with other users gets it revoked

Questions

Is there an unlimited AI chat like ChatGPT?
Yes — connect an UnlimitedAI key to a ChatGPT-style app such as Open WebUI, LibreChat, LobeChat or Chatbox. You chat with Claude, GPT, DeepSeek and more with no message caps or token counting.
Do I need to code?
No. In most chat apps you only paste a base URL, your key and a model name into the settings.
What is the cheapest way to try it?
The Max pass: $20 for 24 hours on 12 models. Ultron gives all 17 models for $35 for 24 hours.