I had the pleasure to sit down with @SebRaschka for a fireside chat at @pyconde & PyData 2026 —
the open AI stack grew up:
▪ Harness > base model. Cursor's Composer is a post-trained Kimi K2.5.
▪ Europe's lever isn't a new base model — it's post-training, tools, domain data.
▪ Open weights aren't preference. They're prerequisite.
▪ Senior engineers become MORE valuable: review is the new bottleneck.
hendorf.com/en/blog/stop-waiti…
#AI #OpenSource #LLM #PyData #Python
Stop Waiting, Start Shipping — the Open AI Stack Grew Up in 2026
Sebastian Raschka in a fireside chat: why the harness matters more than the base model — and why experienced engineers become more valuable in 2026.Alexander C.S. Hendorf
