Simon Willison’s Weblog

23rd April 2026

Release llm-openai-via-codex 0.1a0 — Access OpenAI models via an existing Codex subscription

Hijacks your Codex CLI credentials to make API calls with LLM, as described in my post about GPT-5.5.

Posted 23rd April 2026 at 7:22 pm

Recent articles

GLM-5.2 is probably the most powerful text-only open weights LLM - 17th June 2026
Publishing WASM wheels to PyPI for use with Pyodide - 13th June 2026
Claude Fable is relentlessly proactive - 11th June 2026

This is a beat by Simon Willison, posted on 23rd April 2026.

openai 423 llm 606 codex 51

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