Reading up on Opus
18 deep · digging since jan 29
- Ephemeral testing
Developers discuss using AI coding agents to generate temporary code for testing designs, APIs, and integrations, calling the practice ephemeral or vibe-check testing.
- What We Can Learn from Claude's Fable 5.1 System Prompt
Examining Claude’s Fable 5.1 system prompt shows how evolving model quirks and product design force continual prompt adjustments to balance clarity, tone, and safety.
- Fable & The End of the Free Lunch
The author argues that after Fable's high-cost release, developers must allocate work between expensive models and cheaper alternatives like GLM, ending the era of free performance gains.
- How Cursor Router chooses the right model for the task
Cursor Router uses real developer traffic data to automatically select the optimal AI model for each task, balancing cost and performance through Compass complexity prediction and a learned taxonomy.
- OG Image Inspiration — Recent
The page displays a gallery of recent Open Graph image examples from products such as Notion, Sketch, Popcorn, Opus, Clay, Equals, Fin, Attio, Warp, and Framer.
- Claude's Voice Mode Just Got Smarter
Anthropic updated Claude’s voice mode to use Sonnet/Opus models, add Gmail/Slack context, and improve language support, while noting its turn‑based design limits naturalness.
- Fable's judgement
The author learned to let Claude Code's Fable model use its own judgement to delegate coding tasks to lower-power models, improving efficiency and token usage.
- My Thoughts on AI, Part 2: Agent Setup, Workflow, and Tools
The author details his personal AI development setup and workflow using OpenCode agent, CodeNomad GUI, Opus 4.6 model, and a structured orchestrator-subtask methodology.
- Cybersecurity looks like proof of work now
AISI research shows spending more tokens on LLM vulnerability scanning yields no diminishing returns, making cybersecurity a proof-of-work arms race.
- Why I believe in SOTA models over custom ones
The future of AI is powerful general models becoming cheaper, not narrow custom models, because specialized tasks still benefit from broad intelligence.
Takes
I gave Opus one night and one ask "Build my own Bot / Dot and it should use ChatGPT sign in and Claude subscriptions. Every agent get it's own VM" 12 hours later, TOT exists
@dhruvalgolakiya
Every time you let Opus 5.5 run a long task on its own, have it vibe-code a quick 𝗛𝗧𝗠𝗟 𝗱𝗮𝘀𝗵𝗯𝗼𝗮𝗿𝗱 like this first. Then give it 𝗮 𝘀𝘂𝗯𝗮𝗴𝗲𝗻𝘁 𝘁𝗵𝗮𝘁 𝗼𝗻𝗹𝘆 𝗯𝘂𝗶𝗹𝗱𝘀 𝗱𝗮𝘀𝗵𝗯𝗼𝗮𝗿𝗱𝘀: → Name it dashboard-builder, set its effort to medium, and preload a design skill → The first time, it asks what style you like and saves it to memory. After that, every dashboard fits your taste and the task at hand → Call it before every long task. It builds the dashboard in the background in about two minutes, and the main session keeps coding on high without stopping → The dashboard shows four things: task progress, what's stuck, questions waiting on you, and what it'll do by default if you don't answer Send this prompt to Claude Code 👇 "Set up a subagent that only builds progress dashboards: 1. Create dashboard-builder in ~/.claude/agents: model: opus, effort: medium, memory: user. Preload the design skills I have installed (for example impeccable). It can only read and write the .dashboard/ folder and its own memory. 2. The first time, it asks me what style I like: dark or light, dense or airy, and one accent color. It saves my answer to memory and follows it every time. Pick the panels for the current task; don't use a template. 3. The dashboard is one HTML file showing tasks and their status, questions waiting for me with the default action, the latest deliverables, and anything stuck. Use the real clock for every time. It opens with a double-click and refreshes itself every 10 seconds. 4. Add a rule to ~/.claude/CLAUDE.md: for any task with more than 5 steps or that should take longer than 30 minutes, have dashboard-builder set up the dashboard before starting; update it after every step; when you need a decision from me, add it to the questions list and keep going with the default. Show me the contents of the files you'll create or change, then explain the whole flow in words a 10-year-old could follow. Don't write anything until I confirm."
@Voxyz_ai
I may have accidentally built an Apple Mail CLI with Opus 5.5, plus a frontend that uses Claude to categorize messages and batch archive them 👀
@viticci
Anthropic's strategy to win back the community: ✅ Support AGENTS.md ✅ Reduce Opus price 40% ✅ Make Opus 5.5 the best agentic coding + writing model ✅ Gave us a banked reset (with no window reset) ❓ Let us use the subscription in any harness? 🤞
@iannuttall
Kimi K3 is absolutely hammering through my Windows XP Simulator to do list Claude Code couldn't do this for 2 weeks or kept getting stuck because I would get downgraded to Opus for safety then to Sonnet again for safety, useless 2 weeks of time wasted due to safety guardrails that are dumb just to protect me from making a fun hobby project Thank you China!!!!
@levelsio
the killer AI coding combo for me:opus 4.6 w/ max 20x ($200/mo) — primary workhorsegpt 5.3 codex w/ plus ($20/mo) — review pipeline + weird bugsall via CLI and @conductor_build
@Shpigford
here's some tips for prompting Opus 4.6 + taking advantage of some new API features (e.g., adaptive thinking, 1M context, context compaction, + more). https://t.co/5Lucl0g73n
@RLanceMartin
Since most of my work now involves reviewing plans in Markdown files, I had Opus create a native macOS Markdown viewer for me. Features include: table of contents, file auto-reload, scroll position persistence, and native macOS tabs.I'm too busy to release this officially… pic.twitter.com/6RPdiGV4Fs
@frankdilo