Dev runs Opus 5.5 vs Astra cross-audit workflow, Opus concedes 5 times in one afternoon
Ice2jc · reddit · 2026-09-25
A developer building a stripped-down QuickBooks + YNAB app for their business shares an updated dual-model agent workflow after this week's model changes:
- After backing into a bulky design, they gave Astra and Opus 5.5 both access to project folders to troubleshoot, then had each vet the other's responses.
- Checkpoints send the latest coding progress to separate Astra and Opus 5.5 chats for cross-audit; screenshots show Opus 5.5 largely conceding to Astra's logic with little pushback.
- Takeaway: Opus 5.5 is great and a cheaper audit/second-opinion alternative to Fable, but claims that Anthropic knocked OpenAI "back to the stone age" this week are overstated.
More from coding & agent
- Developers hunt for the gnarliest 'unmergeable' AI-generated code slop screenshots — pvncher · 2026-09-25
- Wake: open-source desktop app unifies and full-text searches all local coding-agent sessions — tom_doerr · 2026-09-25
- curf: a 250KB open-source C++ browser built for AI agents to drive — jasonkneen · 2026-09-25
- Reddit survey hunts real stories of runaway AI agents: infinite retries and burned credits — masterai01 · 2026-09-25
- Auto-Research Arena: 6,300 runs, agents rediscover MQA/MLA, memory layers and more — qixing_huang · 2026-09-25
- The 2026 AI divide: digitized project context plus agentic tools like Claude Code — Afinetheorem · 2026-09-25