Claude Code 2.1.217 adds Claude Opus 5 as default Opus model
Claude Opus 5 (claude-opus-5) becomes the default Opus model in Claude Code with 1M context and fast mode at 50 per Mtok. The release also adds a sandbox.network.strictAllowlist setting to deny unlisted hosts without prompting, plus a DirectoryAdded hook and a July 25 reliability pass.
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