📝 TL;DR 📝 Anthropic released Claude Sonnet 5 on June 30, a more agentic, near-Opus-performance model at a much lower price, now the default for Free and Pro plans. On the same day, the US Commerce Department lifted the export controls that forced Fable 5 and Mythos 5 offline on June 12. Anthropic says Fable 5 returns globally on Wednesday, July 1, with Mythos 5 access restoring more narrowly to vetted partners. It has been a genuinely eventful 48 hours for anyone using Claude. 🧠 Overview 🧠 Two significant Anthropic stories landed within a day of each other, and it is worth understanding them as connected rather than coincidental. First, the resolution of the Fable 5 and Mythos 5 shutdown, which has hung over the Claude ecosystem for nearly three weeks after a Commerce Department export control directive forced both models offline worldwide. Second, the launch of Claude Sonnet 5, a genuinely significant mid-tier model release that landed the same day the export controls were lifted, giving Anthropic a strong second announcement to pair with the restoration news. For anyone building on Claude or using it daily, this is the most consequential 48-hour stretch for the platform since the original shutdown. 📜 The Announcement 📜 Claude Sonnet 5: Anthropic released Sonnet 5 as, in its own words, "our most agentic Sonnet yet." It is now the default model for Free and Pro plans and is available to Max, Team, and Enterprise users, as well as through Claude Code and the Claude Platform. Pricing starts at an introductory $2 per million input tokens and $10 per million output tokens through August 31, then moves to standard pricing of $3 input and $15 output per million tokens, a meaningful discount to Opus 4.8's $4 input and $25 output pricing. On benchmarks, Sonnet 5 closes much of the gap with Opus 4.8 while remaining substantially cheaper. On one agentic coding benchmark, Sonnet 5 scored 63.2% compared to Opus 4.8's 69.2% and the previous Sonnet 4.6's 58.1%. On a knowledge-work benchmark, Sonnet 5 actually slightly outperformed Opus 4.8. Anthropic also reports improved safety behavior, lower rates of deception, sycophancy, and hallucination compared to Sonnet 4.6, along with cyber safeguards enabled by default.