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Web Chat setup guide

NextChat (ChatGPT-Next-Web) custom API setup

Configure NextChat (ChatGPT-Next-Web) with CallAI Base URL. Switch Claude 3.7, GPT-4o, and DeepSeek R1; Docker one-liner supported.

📋 NextChat (ChatGPT-Next-Web) config cheatsheetProduction-ready
Base URL
https://api.callaiapi.com/v1
API Key
sk-live-your-callai-key
Custom models
+claude-3-7-sonnet,+deepseek-r1,+gpt-4o

Recommended models for NextChat (ChatGPT-Next-Web)

claude-3-7-sonnetdeepseek-r1gpt-4ogemini-2.0-flash

Step-by-step setup

1

Open NextChat settings

Bottom-left Settings → Model service.

2

Enable custom endpoint

Choose OpenAI, set Base URL and API Key.

3

Optional Docker deploy

Run NextChat with CallAI env vars.

docker run -d -p 3000:3000 \
  -e BASE_URL=https://api.callaiapi.com/v1 \
  -e OPENAI_API_KEY=sk-live-your-callai-key \
  -e CUSTOM_MODELS="+claude-3-7-sonnet,+deepseek-r1,+gpt-4o" \
  yidadaa/chatgpt-next-web

Troubleshooting

❌ Symptom:Claude 3.7 missing from model dropdown
💡 Fix: Add +claude-3-7-sonnet,+deepseek-r1 in Custom models.
Deep-dive guide
Want advanced tips, rules files, and common pitfalls for NextChat (ChatGPT-Next-Web)?
Read full guide →
API still unreachable after setup?
Use the HTTP status checker to test connectivity and diagnose 403 / 401 errors.
Open status checker →