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chkmr
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GPT-5.6 Sol Ultra will be in Codex 17 days ago
Maybe you jest, but I'll bite.
Tf is sol?
It's a proper noun: the name given to their latest and greatest model. Means "Sun" in Latin. Similar to how Anthropic has been naming its models Fable, Opus, Sonnet etc. Their other models are called Terra (Latin: Earth) and Luna (Latin: Moon) [0].
Tf is ultra?
The name of the "harness" around the model. It'll use deeper thinking, subagents and all that jazz in response to a prompt. Other options include max, high, medium etc I suppose.
Tf is codex?
"Coding agent" similar to Claude Code [1], something with a more descriptive name.
Tf happened to descriptive nomenclature?
Something like GLM-4-32B-0414-128K (not made up [2]) doesn't quite roll off the tongue I suppose.
Some of these have been covered in student projects in this course. E.g. https://www.cs.cornell.edu/courses/cs6120/2023fa/blog/polyhe...
So, if you include the readings (proper research papers) and the course project, I'd say this course earns the "advanced" in its name.