Sebastian Raschka(@rasbt):For agentic coding, one can say: - Unless you need Terra Ultra perf, it's always better to use a Luna model with higher effort setting (same or better performance but cheaper). - Forget everything below Sol High, use Luna with higher effort settings here - Forget Sol Extra High, use Terra Ultra here - The extra cost of Sol Ultra is probably not worth it over Max

Sebastian Raschka

@rasbt

ML/AI research engineer. Ex stats professor. Author of "Build a Large Language Model From Scratch" ( & reasoning (

Joined October 2012

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Sebastian Raschka@rasbt

2026.07.10 13:32

For agentic coding, one can say: - Unless you need Terra Ultra perf, it's always better to use a Luna model with higher effort setting (same or better performance but cheaper). - Forget everything below Sol High, use Luna with higher effort settings here - Forget Sol Extra High, use Terra Ultra here - The extra cost of Sol Ultra is probably not worth it over Max