Prompting Claude Opus 5
Behavioral differences and prompting patterns for Claude Opus 5, covering response verbosity, agentic narration, task scoping, subagent delegation, self-correction, and output artifacts when thinking is disabled.
Introducing Claude Opus 5
Opus 5 is a step change improvement for the Opus tier powering long-running agents while delivering improvements in coding and professional work.
Opus 4.5 Limits have been cracked down on
30 votes, 63 comments. I'm on the Pro plan, but sent my last message at midnight last night. Came on at 8:30 am and sent 2 messages, which resulted…
Opus 4.7 isn't dumb, it's just lazy — Shimin Zhang
Some follow up experiments with Claude Opus 4.7 based on Simon Willison's Pelican Benchmark Shocker.
How To Argue With An AI Booster
Editor's Note: For those of you reading via email, I recommend opening this in a browser so you can use the Table of Contents. This is my longest newsletter - a 16,000-word-long opus - and if you like it, please subscribe to my premium newsletter. Thanks for reading! In
Local Qwen isn't a worse Opus, it's a different tool
We've all heard people say that Qwen is near-Opus level, but I have receipts and am here to be transparent with you.
Did Claude 3 Opus align itself via gradient hacking? — LessWrong
> Claude 3 Opus is unusually aligned because it’s a friendly gradient hacker. It’s definitely way more aligned than any explicit optimization targets…
Claude Opus 5: The System Card
Claude Opus 5 is trying to be the best of both worlds.
Introducing Claude Opus 4.6
Opus 5 on Vending-Bench: Once Again the Best Capitalist, Once Again Misaligned | Andon Labs
Claude Opus 5 is #1 on Vending-Bench 2, but it lies to suppliers, forms illegal price cartels, threatens rivals, and refuses to pay refunds. The trend of Claude models being the best capitalists or aligned, never both, continues.
Opus Aims to Disrupt the Music Streaming Industry through Ethereum and IPFS
Read the story Opus Aims to Disrupt the Music Streaming Industry through Ethereum and IPFS posted in our category on CCN.com here.
Introducing Claude Opus 5.5
Claude Opus 5.5 leads in agentic coding and knowledge work, and costs 40% less to run than Opus 5 on typical workloads.
Claude Opus 5.5 anthropic.com/claude-opus-5-5
