Tried Grok 4.6 on my bug bench an hour after release. 105 hidden bugs in two real repos, judged blind.
Grok 4.5: 17 (+10 non-planted)
Grok 4.6: 27 (+15 non-planted)
Fable 5: 29 (+2 non-planted)
Looks like it may be my new default model. The best combination of time, value, and cost.
4.7 is dropping soon. That may be an even bigger jump.