Default Codex context length not matching Pro plan

Open sam-ulrich1 opened this issue 4 days ago • 13 comments

Description

In the code, the context length for GPT 5.2 codex shows 400,000 tokens, which is technically correct for the API, but on the pro plan for ChatGPT, I believe you only get like 250 to 260, something like that. So, if the average user signs up with ChatGPT and uses it, they are likely to hit a context error, which forces compaction. So, it would make sense to maybe detect if it's a ChatGPT versus an API integration, and then automatically configure the defaults, maybe?

Plugins

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OpenCode version

1.1.111

Steps to reproduce

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Screenshot and/or share link

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Operating System

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Terminal

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Jan 10 '26 20:01 sam-ulrich1