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DeepSeek as the default model on ChatGPT Codex

This story is from 2026-09-12. It is preserved in the archive; the latest stories are on the live feed.

In this article, I will explain how you can set DeepSeek as the default model for your Codex coding agent. By doing this, you no longer need to pay a flat monthly subscription. You only need to top up your DeepSeek API balance and pay for exactly what you use. 1. Preparing Your API Key Before editi…

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  1. 2026-09-12 06:14 · DEV Community — AI
    DeepSeek as the default model on ChatGPT Codex

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