# Claude Haiku 5.5 - Host: [simonwillison.net](https://links.thingelstad.xyz/hosts/simonwillison.net/) - Saved: October 8, 2026 (2026-10-09T00:09:05Z) - Record: https://links.thingelstad.xyz/links/85afe82638d5/ - JSON: https://links.thingelstad.xyz/links/85afe82638d5.json ## Facts - Kind: [Page](https://links.thingelstad.xyz/kinds/page/) ## Mentioned by - [Introducing Claude Haiku 5.5 Anthropic](https://links.thingelstad.xyz/links/2cf28a1a9302/) (anthropic.com, October 8, 2026) ## Same host - [Changes in the system prompt between Claude Opus 4.6 and 4.7](https://links.thingelstad.xyz/links/1d174141f23a/) (simonwillison.net, April 21, 2026) - [Notes on Pope Leo XIV's encyclical on AI](https://links.thingelstad.xyz/links/fb3bcf08bfae/) (simonwillison.net, May 25, 2026) - [OpenAI’s rogue agents were caught communicating via public wikis](https://links.thingelstad.xyz/links/4d7e9f8b2287/) (simonwillison.net, September 17, 2026) - [A quote from Boris Cherny](https://links.thingelstad.xyz/links/7d445be5f430/) (simonwillison.net, September 17, 2026) - [We’re going to need default hard budget caps on pretty much everything](https://links.thingelstad.xyz/links/81b68c5ee25b/) (simonwillison.net, October 4, 2026) ## Saved the same week - [OpenAI silences familiar voices](https://links.thingelstad.xyz/links/3f39e1b69b2c/) (sixcolors.com, October 8, 2026) - [Birchfeed](https://links.thingelstad.xyz/links/68402937711f/) (birchfeed.app, October 8, 2026) - [BIGWORDS.PAGE: Turn any screen into a sign](https://links.thingelstad.xyz/links/274e0b08f860/) (bigwords.page, October 8, 2026) - [Anti-Patterns in Software Blogging · Refactoring English](https://links.thingelstad.xyz/links/0dfe71beaeeb/) (refactoringenglish.com, October 8, 2026) - [If You Understand These 5 Platform Engineering Terms, You’re Ahead of 90%](https://links.thingelstad.xyz/links/d017d9813f6c/) (medium.com, October 8, 2026) ## Elsewhere - Wayback Machine: https://web.archive.org/web/*/https://simonwillison.net/2026/Oct/7/claude-haiku-5-5/