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.
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