I’m skeptical of the result as claimed BUT I really do think model diversity really helps.

Depending on the feature, I often these days have opus plan first and work with it on business specs, then have it reviewed by 1 or all of the cheaper models: haiku, sonnet, terra, sol, grok, muse spark,

Then take the updated plan in opus and forward to Astra and Fable, once you have the final plan in place execute.

Then have the same batch review code after created.

I am surprised how often one of the smaller models catch things. Despite so many things having eyes on.