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Demo of ChatGPT Code Interpreter running in o3-mini-high. OpenAI made GPT-4.5 available to Plus ($20/month) users today. I was a little disappointed with GPT-4.5 when I tried it through the API, but having access in the ChatGPT interface meant I could use it with existing tools such as Code Interpreter which made its strengths a whole lot more evident - that’s a transcript where I had it design and test its own version of the JSON Schema succinct DSL I published last week.

Riley Goodside then spotted that Code Interpreter has been quietly enabled for other models too, including the excellent o3-mini reasoning model. This means you can have o3-mini reason about code, write that code, test it, iterate on it and keep going until it gets something that works.

Screenshot showing ChatGPT 03-mini-high - my prompt: Use your Python tool to show me the versions of Python and SQLite. Reasoned about Python and SQLite versions for a couple of seconds Below is the Python code used to print both the Python and SQLite versions: Python Code import sys import sqlite3 print("Python version:" print ("SQLite version:" Result Python version: 3.11.8 main, Mar 12 2024, 11:41:52) GCC 12.2.01° SQLite version: 3.40.1

Code Interpreter remains my favorite implementation of the "coding agent" pattern, despite recieving very few upgrades in the two years after its initial release. Plugging much stronger models into it than the previous GPT-4o default makes it even more useful.

Nothing about this in the ChatGPT release notes yet, but I've tested it in the ChatGPT iOS app and mobile web app and it definitely works there.

Posted 5th March 2025 at 11:07 pm

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