New strings in the Claude Code binary suggest a new model ID 'claude-opus-4-5-20251101*',

EXHIBIT 1654 · URGENT

Sep 26, 2026 01:06 UTC binary @anthropic-ai/claude-code-darwin-arm64

New strings in the Claude Code binary suggest a new model ID 'claude-opus-4-5-20251101*', new internal feature flags, and various internal endpoints and sentences related to session handling and debugging.

READY TO POST:

anthropic's claude code binary has a new model id 'claude-opus-4-5-20251101*' showing up. might be a new version coming!

looks like anthropic is adding more internal tooling and feature flags to claude code, with mentions of internal sharing and new session handling.

⚠️ FROM COMPILED BINARY — lower confidence, verify before posting. (May include bundled-dependency strings, not just first-party changes.) @anthropic-ai/claude-code-darwin-arm64 2.1.282 -> 2.1.283: +14674 strings, -11770 strings, 31 interesting [model_id] (4) + " was ignored: it names a different model depending on the release and settings. Name the model instead, for example "claude-opus-5-5". + /$bunfs/root/claude-code.d.ts-8ef3f324.txt.zst + a mantle upstream needs a models list: the models your AWS account has on Mantle, named as clients send them, for example models: [claude-opus-4-7, claude-haiku-4-5]. Only these go to this upstream. + claude-opus-4-5-20251101* [feature_flag] (17) + (?:^|[\s,])(?:-[^\s=MmIeECSFx-]*[dr]|-e|--(?:require|import|loader|experimental-loader|eval|inspect|interactive)\b)|\binspect\b|\/(?:dev|proc)\/% + ) cannot take a session started remotely on it: the version such sessions require cannot be received while feature-flag evaluation is off (DISABLE_TELEMETRY or DO_NOT_TRACK is set). + : could not be served (internal error) + <${v2}>No completion record was found for them in the previous session. ${h} Task ids in this notification beginning with "${Ue}" are internal scan markers, not tasks.</${v2}> + Claude Code hit an internal error loading it; run with --debug for details + Internal share URL for the conversation. Only set in internal builds, when the upload succeeded or was handed to the host machine to finish (the page then appears once the person confirms the upload there); absent otherwise. + could not serve this call (internal error); nothing is known to have run. + docker.for.mac.host.internal + docker.for.win.host.internal + gateway.internal + host.internal + host.k3d.internal + host.minikube.internal + host.rancher-desktop.internal + internal_querier + tengu_ccr_event_hold_enabled + the exit-time reaper for a still-connecting stdio server cannot arm; re-verify BoundedStdioClientTrans