Why CEREBRO kept it

Official Opus prompting guide, core LLM mechanics

Backlinks

Appeared in 1 briefing

• 2026-09-28

Related

Shares tags: ai/llm-mechanics · cerebro/signal

• Why does Opus 5.5 feel practically unlimited when Fable 5.1 was so heavily limited? It's a combination of two things: Opus's efficiency, and the 50% limit on Fable. Claude Code subs are very generoux · 2026-09-28
• we launched the most comprehensive ai performance engineering repo in the world follow and save to keep up with the series. links in thread 🧵 part 6: Transformer Inference Arithmetic Carol Chen (kix · 2026-09-28
• Last few days, I ran 50-100 of my workflows (that earlier used Fable 5.1 as the orchestrator) on Opus 5.5 and found minimal differences. But there’s still the FOMO of not using the smarter model. Whatx · 2026-09-28
• How to choose which model for Planning VS Implementing VS Reviewreddit · 2026-09-28
• 'You are a senior engineer' changes how sure the answer sounds, not how right it isreddit · 2026-09-28
• Claude Opus 5.5 is out — Anthropic says ~40% cheaper than Opus 5 at similar capability, with external evals before releasereddit · 2026-09-28

Also from reddit.com

• I built an open-source workspace where coding agents can control the app through a CLIreddit · 2026-09-28
• How to choose which model for Planning VS Implementing VS Reviewreddit · 2026-09-28
• Git worktrees solved our parallel-agent file conflicts. The test environment was harder.reddit · 2026-09-28
• Coding agents fix bugs where the error shows up, not where it startsreddit · 2026-09-28
• 'You are a senior engineer' changes how sure the answer sounds, not how right it isreddit · 2026-09-28
• How do you keep large test suites from overwhelming AI coding agents?reddit · 2026-09-28