As of July 8, 2026, Anthropic moved Fable 5 off Pro/Max/Team subscriptions and onto usage-credit billing. The Mythos-tier model a lot of us leaned on is now a pay-per-use add-on.
Before you top up credits, a reframe: on the long, autonomous runs where Fable 5 felt irreplaceable, the bottleneck usually isn't raw model IQ. It's that Opus drifts off-mission and loses the goal to auto-compaction. Fix those two things and Opus punches far above where it feels on a multi-day task.
That's what I built ploop for.
What it is
ploop (Overclock Loop) is an autonomous loop for Claude Code, built for missions that span hours or days. You hand it a mission once; it keeps Opus on-target and self-checking until the work is actually done.
