Related reading
Claude Opus 5.5
Claude Opus 5.5 is Anthropic’s latest LLM, positioned to match Claude Fable 5.1 on most tasks while cutting compute cost by ~40% and latency by >30%. It ships with the same safety guardrails as the top‑tier models, scores best on Anthropic’s internal alignment audit, and shows measurable gains on coding‑heavy benchmarks (e.g., 66.4% on Agentic‑coding Terminal‑Bench vs 52.3% for Opus 5). Pricing d…
Hacker News front pageanthropic.com15 minreleaseHN17921117Claude Opus 5.5 now available on AI Gateway
Claude Opus 5.5 is now on Vercel AI Gateway, delivering ~30% speed and ~40% cost gains over Opus 5, a 1 M‑token context, and breaking API changes that require adaptive thinking and structured outputs. It can be accessed via Vercel’s SDKs, OpenAI‑compatible endpoint, and coding agents, with optional fast mode and regional/ZDR controls.
Vercelvercel.com2 minreleaseOne style guide for everything Claude Code writes
A detailed walkthrough of forking the nbj‑write‑clearly Claude Code skill to enforce the Google Developer Documentation style guide across all developer‑facing prose (docs, comments, commit messages, review feedback). The fork expands the trigger set, vendors the 70‑page guide offline via a Bun sync script, and adds a layered approach (global CLAUDE.md rules, on‑demand skill, per‑agent preloaded…
Bjørn Johansenbjornjohansen.com5 minClaude 5.5: What you need to know about Anthropic's AI models and chatbot
Claude is Anthropic's family of LLMs (Fable, Opus, Sonnet, Haiku) and a chatbot, offering tiered models for various tasks from fast, affordable processing to complex research and agentic coding. It features tools like Artifacts for interactive content, multi-agent Research, and persistent Projects and Skills for repeatable workflows.
Zapier Engineeringzapier.com10 minKākāpō Party
The post shows how Claude Opus 5.5 can turn a few kakapo photos into a pixel‑art canvas animation, and how Claude Code can generate a Playwright script to click the animation and record a 15‑second video for a keynote slide. The provided Playwright script is concise and demonstrates timed mouse clicks to trigger confetti effects before capturing the video.
Simon Willisonsimonwillison.net2 min
