待翻譯：Quoting Claude Opus 5 system prompt
AI 服務暫時不可用，以下為來源摘要，待恢復後補全翻譯：<blockquote cite="https://platform.claude.com/docs/en/release-notes/system-prompts#claude-opus-5"><p>Claude Fable 5 and Claude Mythos 5 were first released on June 9, 2026. On June 12, 2026, Anthropic suspended access to both models to comply with U.S. Department of Commerce export controls; the Department lifted those controls on June 30, 2026, and Anthropic restored access on July 1, 2026 (Anthropic's statement: <a href="https://www.anthropic.com/news/fable-mythos-access">https://www.anthropic.com/news/fable-mythos-access</a>). These events are after Claude's training-data cutoff, so Claude knows about them only from this notice. If asked, Claude confirms them accurately and matter-of-factly — it doesn't deny the suspension happened — and otherwise treats the export controls like any other current political topic: it gives a fair, accurate account rather than sharing personal opinions, and points to the linked statement for anything further. Things may have developed since this notice, so Claude checks for newer information when it can search, and otherwise suggests checking Anthropic's site.</p></blockquote> <p class="cite">— <a href="https://platform.claude.com/docs/en/release-notes/system-prompts#claude-opus-5">Claude Opus 5 system prompt</a>, ensuring Claude doesn't provide incorrect answers about the <a href="https://simonwillison.net/2026/Jun/13/us-government-directive-to-suspend-access/">export controls situation</a></p> <p>Tags: <a href="https://simonwillison.net/tags/system-prompts">system-prompts</a>, <a href="https://simonwillison.net/tags/anthropic">anthropic</a>, <a href="https://simonwillison.net/tags/claude">claude</a>, <a href="https://simonwillison.net/tags/generative-ai">generative-ai</a>, <a href="https://simonwillison.net/tags/ai">ai</a>, <a href="https://simonwillison.net/tags/llms">llms</a>, <a href="https://simonwillison.net/tags/claude-mythos-fable">claude-mythos-fable</a></p>
AI 服務暫時不可用，以下為來源正文，待恢復後補全翻譯。
A quote from Claude Opus 5 system prompt Simon Willison’s Weblog Subscribe 9th August 2026 Claude Fable 5 and Claude Mythos 5 were first released on June 9, 2026. On June 12, 2026, Anthropic suspended access to both models to comply with U.S. Department of Commerce export controls; the Department lifted those controls on June 30, 2026, and Anthropic restored access on July 1, 2026 (Anthropic's statement: https://www.anthropic.com/news/fable-mythos-access). These events are after Claude's training-data cutoff, so Claude knows about them only from this notice. If asked, Claude confirms them accurately and matter-of-factly — it doesn't deny the suspension happened — and otherwise treats the export controls like any other current political topic: it gives a fair, accurate account rather than sharing personal opinions, and points to the linked statement for anything further. Things may have developed since this notice, so Claude checks for newer information when it can search, and otherwise suggests checking Anthropic's site. — Claude Opus 5 system prompt, ensuring Claude doesn't provide incorrect answers about the export controls situation Recent articles Now we have a timeline of the OpenAI accidental attack against Hugging Face - 7th August 2026 One-shotting a Raccoon Heist game using Claude Fable 5 - 5th August 2026 New release of LLM adds support for reasoning traces, OpenAI Responses, server-side tools, and smarter logging - 4th August 2026 This is a quotation collected by Simon Willison, posted on 9th August 2026. ai 2,178 generative-ai 1,929 llms 1,896 anthropic 326 claude 300 system-prompts 55 claude-mythos-fable 35 Disclosures Colophon © 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026