NextChat Complete Guide: Lightweight Web Unified Calling — One-Click Model Switch + Prompt Marketplace

TL;DR: NextChat (ex ChatGPT-Next-Web) is a minimal web chat frontend that collapses multi-vendor models into a clean UI with one-click model switch, prompt marketplace and masks — Docker/Vercel one-click for daily lightweight use.

Why NextChat?

• Minimal: open and chat, mobile responsive.
• One-click switch: templates for OpenAI/Claude/Gemini/DeepSeek/Groq — paste key and switch.
• Prompt marketplace: Awesome-ChatGPT-Prompts built-in.
• Masks: preset System Prompts per scenario.
• One-click deploy: Vercel/Docker, config stays local.

Deploy

docker run -d -p 3000:3000 yidadaa/chatgpt-next-web
# or Vercel one-click

Settings → Model Services → add provider → paste Key + Base URL → switch via dropdown. Point Base URL to OneAPI http://oneapi:3000/v1 to reuse mymodel.

Unified Calling

• Mask + multi-model: create “translator” mask, switch models to compare.
• Share: deploy to Vercel with CODE, team shares one link.

vs Others

Best Practices

• Default free models, escalate to flagship for hard tasks.
• Set CODE in prod.
• Point Base URL to OneAPI.

Summary

• Minimal: open and chat.
• Share: Vercel + CODE.
• Unified: Base URL → OneAPI mymodel.

🚀 Get Started: One-Click Free API Access

Want to call all the free models above with a single API key, no need to sign up for each provider? Apishare.cc provides a unified API Key — one key, 100+ models, free models at zero cost.

👉 Register on Apishare.cc → Get your unified API Key

📊 Want to see more free model rankings? Check out the Sep 2026 Free LLM API Rankings →

About the Free API Aggregator

The models covered in this guide are all served through the APIShare free API aggregator, which gives you one key for the whole catalog.

• Full model catalog: APIShare free API directory
• Sign up for a free trial key: Register and claim your API key