Langflow

Langflow: configure a model connection in an automation workflow.

Published instructions · App version: unverified

Chat, ping, invoke and content-generation examples may send real billable requests. Check the model, balance, rate and minimum before running them. GET /v1/models checks authentication and the catalogue only. Set up environment variables safely

Base URL to paste

OpenAI SDKs generally use a URL ending in /v1; Anthropic SDKs use the root URL. Avoid adding /v1 twice. Protocol compatibility does not guarantee every provider feature.

https://thapi.cloud/v1

Prerequisites

Langflow
API keys

Recommended model: claude-fable-5

Quick way — command / config

OpenAI / Compatible LLM
  OpenAI API Base : https://thapi.cloud/v1
  OpenAI API Key  : sk-thapi-...
  Model Name      : claude-fable-5

Where to place file / fill Settings

Interfaceany

Component OpenAI

Enable/fill in the custom Base URL field if the UI provides it separately.

Verify connection

Build → Run a short flow

Troubleshooting

Symptom	Reason	How to handle
model_not_found	Incorrect model name.	Call GET /v1/models to obtain the exact id.

Flowise · LangChain