# Devin adds ChatGPT sign‑in for Plus and Pro users

> Users with a ChatGPT Plus or Pro plan can now log into Devin and have OpenAI model usage count against their existing plan.

Oossa · 2026-09-29 · https://oossa.com/en/devin-adds-chatgpt-sign-in-for-plus-and-pro-users

Starting today, Devin lets you sign in with your ChatGPT account. If you have an eligible ChatGPT Plus or Pro subscription, the OpenAI models you use in Devin Cloud, Desktop or CLI will draw from that plan’s quota. You can set a lower limit for Devin in your ChatGPT settings, and any overage runs on Devin’s own quota until it resets. The new Fusion mode claims a 39 % cost saving when using GPT‑6 Astra with the SWE‑2 sidekick.

## The facts

- ChatGPT Plus/Pro plan usage applies to Devin as of September 29 2024
- Fusion with GPT‑6 Astra and SWE‑2 is reported to be 39 % cheaper than Astra alone

## Why it matters

It lets existing ChatGPT subscribers extend their AI budget to a new coding assistant without extra charges.

## Sources & references

1. [ProductSign in with ChatGPTYou can now sign in to Devin with ChatGPT and use your eligible ChatGPT Plus or Pro plan for OpenAI model usage across Devin Cloud, Devin Desktop, and Devin CLI.September 29](https://windsurf.com/blog/sign-in-with-chatgpt) – Windsurf, 2026-09-29

Last updated: 2026-09-29