v2.1.316
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What's changed Added CLAUDE_CODE_DISABLE_ULTRATHINK, which turns the ultrathink keyword off Added pooled group budgets to the Claude apps gateway: one monthly budget that a group's members share, on top of each member's own limit, set with pooled_budget on the spend limits admin API Added CLAUDE_CODE_DISABLE_LOOPED_CROSS_CERT_DROP to keep system cross-certificates that certify each other in a loop, for servers whose private CA needs one Added CLAUDE_CODE_SUBAGENT_EFFORT to set the effort level subagents run at when nothing else names one, instead of inheriting the session's Added managed.policy_mode: layered to the Claude apps gateway: every policy that matches a developer applies, each merged over the ones listed below it, not only the first Added guardrail.input_tagging on Claude apps gateway Bedrock upstreams, which wraps prompts in the input tags that an Amazon Bedrock guardrail's prompt attacks filter needs; all_messages_and_system also tags the system prompt Deprecated fast mode for Opus 4.8 as of October 30, 2026; it will be removed on November 30, 2026.
After removal, fast mode requests on Opus 4.8 return an error and do not fall back to standard Opus 4.8.
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