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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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What has changed since

An entry is only as true as the day it was written.

Flags move on the server after a release ships. Anthropic's own notes land days later and their documentation later still. Sometimes an entry turns out to be wrong and gets corrected by hand. All of that is recorded against the entry it happened to, and this is the whole of it in the order it happened.

Nothing here replaces an entry. Every line links to the page its release published, still saying what that release said, because a correction is added and dated rather than swapped in.

Events22,476dated, and never edited afterwards
Newestthe last time anything moved
Flag readings moved17,124a reading is one sample, for one account
Documentation arrived5,242a docs edit touched an entry's names
WhenEntryWhat happened
v2.1.232tengu_harbor_kite_cloud Flag reading movedThe flag server now returns off for tengu_harbor_kite_cloud, read as this account.
v2.1.232tengu_harbor_kite_cloud Flag reading movedThe flag server now returns off for tengu_harbor_kite_cloud, read as this account.
v2.1.248tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.248tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.238tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.236tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.236tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.236tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.232tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.232tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.232tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.232tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.232tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.232tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.227tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.224tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.224tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.224tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.224tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.224tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.224tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.224tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.224tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.224tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.224tengu_harbor_kite Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.
v2.1.80tengu_harbor Flag reading movedThe flag server now returns on for tengu_harbor, read as this account.
v2.1.91tengu_gypsum_kite Flag reading movedThe flag server now returns off for tengu_gypsum_kite, read as this account.
v2.1.68tengu_grey_step2 Flag reading movedThe flag server now returns {"dialogDescription":"Effort determines how long Claude thinks for when completing your task. We recommend medium effort for most tasks to balance speed and intelligence and maximize rate limits. Use ultrathink to trigger high effort when needed.","dialogTitle":"We recommend medium effort for Opus","enabled":true} for tengu_grey_step2, read as this account.
v2.1.68tengu_grey_step2 Flag reading movedThe flag server now returns {"dialogDescription":"Effort determines how long Claude thinks for when completing your task. We recommend medium effort for most tasks to balance speed and intelligence and maximize rate limits. Use ultrathink to trigger high effort when needed.","dialogTitle":"We recommend medium effort for Opus","enabled":true} for tengu_grey_step2, read as this account.
v2.1.68tengu_grey_step2 Flag reading movedThe flag server now returns {"dialogDescription":"Effort determines how long Claude thinks for when completing your task. We recommend medium effort for most tasks to balance speed and intelligence and maximize rate limits. Use ultrathink to trigger high effort when needed.","dialogTitle":"We recommend medium effort for Opus","enabled":true} for tengu_grey_step2, read as this account.
v2.1.117tengu_gleaming_fair Flag reading movedThe flag server now returns off for tengu_gleaming_fair, read as this account.
v2.1.247tengu_gentle_hammock Flag reading movedThe flag server now returns on for tengu_gentle_hammock, read as this account.
v2.1.215tengu_gault_kestrel Flag reading movedThe flag server now returns off for tengu_gault_kestrel, read as this account.
v2.1.248tengu_frame_publish_context Flag reading movedThe flag server now returns on for tengu_frame_publish_context, read as this account.
v2.1.128tengu_flint_harbor_share Flag reading movedThe flag server now returns off for tengu_flint_harbor_share, read as this account.
v2.1.94tengu_flint_harbor Flag reading movedThe flag server now returns off for tengu_flint_harbor, read as this account.
v2.1.203tengu_fleet_past_sessions Flag reading movedThe flag server now returns off for tengu_fleet_past_sessions, read as this account.
v2.1.205tengu_fleet_needs_input_nudge Flag reading movedThe flag server now returns on for tengu_fleet_needs_input_nudge, read as this account.
v2.1.80tengu_fgts Flag reading movedThe flag server now returns on for tengu_fgts, read as this account.
v2.1.248tengu_fgts Flag reading movedThe flag server now returns on for tengu_fgts, read as this account.
v2.1.219tengu_fennel_godwit Flag reading movedThe flag server now returns off for tengu_fennel_godwit, read as this account.
v2.1.247tengu_feedback_survey_config Flag reading movedThe flag server now returns {"hideThanksAfterMs":3000,"minTimeBeforeFeedbackMs":300000,"minTimeBetweenFeedbackMs":3600000,"minTimeBetweenGlobalFeedbackMs":43200000,"minUserTurnsBeforeFeedback":3,"minUserTurnsBetweenFeedback":5,"onForModels":["*"],"probability":0.25} for tengu_feedback_survey_config, read as this account.
v2.1.248tengu_expressive_whistle Flag reading movedThe flag server now returns off for tengu_expressive_whistle, read as this account.
v2.1.246tengu_expressive_whistle Flag reading movedThe flag server now returns off for tengu_expressive_whistle, read as this account.
v2.0.54tengu_event_sampling_config Flag reading movedThe flag server now returns {"tengu_plugin_name_collision":{"sample_rate":0.01},"tengu_session_file_read":{"sample_rate":0.01},"tengu_skill_file_changed":{"sample_rate":0}} for tengu_event_sampling_config, read as this account.
v2.1.227tengu_event_loop_stall Flag reading movedThe flag server now returns off for tengu_event_loop_stall, read as this account.
v2.1.238tengu_ethereal_nova Flag reading movedThe flag server now returns on for tengu_ethereal_nova, read as this account.
v2.1.238tengu_ethereal_nova Flag reading movedThe flag server now returns on for tengu_ethereal_nova, read as this account.
v2.1.238tengu_ethereal_nova Flag reading movedThe flag server now returns on for tengu_ethereal_nova, read as this account.
v2.1.234tengu_ethereal_nova Flag reading movedThe flag server now returns on for tengu_ethereal_nova, read as this account.
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