One prompt kept Claude Opus 5.5 working for 12 hours straight
banteg · x · 2026-09-24
Developer donaldjewkes showed an extreme agentic coding run: he spoke to his computer for 5 minutes, Claude Opus 5.5 worked autonomously for 12 hours, and the finished project was ready when he woke up. He shared the full prompt, and others reproducing his workflow report strong results.
Related event: Dev's 5-Minute Voice Prompt Lets Claude Autonomously Work 12 Hours(7 posts)→
More from coding & agent
- Loom founder launches Roma 2.0, a shared to-do list that orchestrates AI agents — thetripathi58 · 2026-11-12
- Sosumi Eval: Apple Docs Access Lifts Coding Agent Pass Rates from ~33% to 94-98% — JordanMorgan10 · 2026-11-12
- CypherGuard fixes structurally wrong LLM Cypher queries, hitting 88.5% on CypherBench — JeremyCMorgan · 2026-11-12
- Building an End-to-End Hedge Fund in Python with Claude Code: A 5-Step Workflow — mdancho84 · 2026-11-12
- Jeff Dean: comfortable with engineers spending up to $10M/year on AI tools — deedydas · 2026-11-12
- Developer builds VladOS, a personal life dashboard, by just describing it to an AI agent — haltakov · 2026-11-12