Anthropic's Claude Code binary for Darwin ARM64 was updated, revealing a new model ID `cla

EXHIBIT 1364 · URGENT

Sep 15, 2026 01:08 UTC binary @anthropic-ai/claude-code-darwin-arm64

Anthropic's Claude Code binary for Darwin ARM64 was updated, revealing a new model ID `claude-opus-4-5-20251101` and several internal feature flags related to worker behavior, beta features, and tool use.

READY TO POST:

anthropic's latest claude code binary has a new model id: `claude-opus-4-5-20251101`. could this be a future opus variant or just an internal codename?

interesting feature flags spotted in the new claude code binary, including 'dangerous-tool-use' beta and 'thinking-resumption'. seems like anthropic is testing some advanced internal capabilities.

⚠️ FROM COMPILED BINARY — lower confidence, verify before posting. (May include bundled-dependency strings, not just first-party changes.) @anthropic-ai/claude-code-darwin-arm64 2.1.270 -> 2.1.272: +12991 strings, -10574 strings, 29 interesting [model_id] (2) + /$bunfs/root/claude-code.d.ts-21b4def3.txt.zst + claude-opus-4-5-20251101 [feature_flag] (17) + ${e?Mt:"Every message you send is to the user."} Worker results and system notifications are internal signals, not conversation partners \u2014 never thank or acknowledge them. Summarize new information for the user as it arrives. + <${xW}>No completion record was found for them in the previous session. ${k} Task ids in this notification beginning with "${Ne}" are internal scan markers, not tasks.</${xW}> + @internal Emitted when a scheduled task (cron) fires. content is the render text. From internal SystemMessage 'scheduled_task_fire'. + @internal Present, and true, only when this worker uses the relay_marker member of a turn_handoff request; a client sends that member to no other worker. + @internal Success payload answering turn_handoff. + @internal The calls queued to run (status accepted).1 + @internal Why org policy or managed settings lock `remoteControlAtStartup`; absent when allowed. Fails closed while the policy is unverified. + This build of @anthropic-ai/bun-internal has no Bun.ant.CellSegmenter; src/ink needs bun-internal >= the version pinned in package.json. + [reminders] the server rejected the clear_at beta header or field (HTTP 400); retrying without them. For the rest of this session earlier reminders are not re-sent, and requests that can use a Message Threads thread get no reminder. + [server-classifier] an unrecognised HTTP 400 arrived while the dangerous-tool-use beta was on the request; retrying once without it, and auto mode decides with the local classifier for the rest of this conversation + [server-classifier] the platform rejected a beta on this request (HT