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

Events22,646dated, and never edited afterwards
Newestthe last time anything moved
Flag readings moved17,288a reading is one sample, for one account
Documentation arrived5,248a docs edit touched an entry's names
WhenEntryWhat happened
v2.1.284tengu_auto_mode_config Flag reading movedThe flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account.
v2.1.283tengu_auto_mode_config Flag reading movedThe flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account.
v2.1.283tengu_auto_mode_config Flag reading movedThe flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account.
v2.1.282tengu_auto_mode_config Flag reading movedThe flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account.
v2.1.281tengu_auto_mode_config Flag reading movedThe flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account.
v2.1.281tengu_auto_mode_config Flag reading movedThe flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account.
v2.1.281tengu_auto_mode_config Flag reading movedThe flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account.
v2.1.269tengu_auto_mode_config Flag reading movedThe flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account.
v2.1.259tengu_auto_mode_config Flag reading movedThe flag server now returns {"editRemovalCap":3000,"editRemovalVisibility":true,"enabled":"enabled","envOnboarding":true,"gitStatusType":true,"gitStatusUploads":false,"jsonlTranscript":true,"modelByMainModel":{"claude-haiku-5-5":"claude-sonnet-5[1m]","claude-haiku-5-5[1m]":"claude-sonnet-5[1m]"},"outcomeVisibility":false,"repoVisibility":true,"sameTurnSiblingContext":true,"severityByModel":{"claude-opus-4-8":{"t1":45,"t2":35},"claude-opus-4-8[1m]":{"t1":45,"t2":35},"claude-sonnet-5":{"t1":25,"t2":35},"claude-sonnet-5[1m]":{"t1":25,"t2":35}},"severityBySite":{"compactFabCheck":"on","handoff":"on","investigator":"on","sandboxNetwork":"on","workflowGate":"on"},"twoStageClassifier":true} for tengu_auto_mode_config, read as this account.
v2.1.281tengu_agents_md_mod Flag reading movedThe flag server now returns on for tengu_agents_md_mod, read as this account.
v2.1.280tengu_agents_md_mod Flag reading movedThe flag server now returns on for tengu_agents_md_mod, read as this account.
v2.1.277tengu_agents_md_mod Flag reading movedThe flag server now returns on for tengu_agents_md_mod, read as this account.
v2.1.274tengu_agents_md_mod Flag reading movedThe flag server now returns on for tengu_agents_md_mod, read as this account.
v2.1.280tengu_wondrous_acorn Flag reading movedThe flag server now returns {"enabled":false} for tengu_wondrous_acorn, read as this account.
v2.1.248tengu_wise_star Flag reading movedThe flag server now returns off for tengu_wise_star, read as this account.
v2.1.280tengu_wise_bear_copy Flag reading movedThe flag server now returns [] for tengu_wise_bear_copy, read as this account.
v2.1.274tengu_virtual_pancake Flag reading movedThe flag server now returns off for tengu_virtual_pancake, read as this account.
v2.1.274tengu_virtual_pancake Flag reading movedThe flag server now returns off for tengu_virtual_pancake, read as this account.
v2.1.274tengu_virtual_pancake Flag reading movedThe flag server now returns off for tengu_virtual_pancake, read as this account.
v2.1.288tengu_violin_finetuner Flag reading movedThe flag server now returns off for tengu_violin_finetuner, read as this account.
v2.1.269tengu_umber_stile Flag reading movedThe flag server now returns off for tengu_umber_stile, read as this account.
v2.1.265tengu_umber_stile Flag reading movedThe flag server now returns off for tengu_umber_stile, read as this account.
v2.1.265tengu_umber_stile Flag reading movedThe flag server now returns off for tengu_umber_stile, read as this account.
v2.1.265tengu_umber_stile Flag reading movedThe flag server now returns off for tengu_umber_stile, read as this account.
v2.1.265tengu_umber_stile Flag reading movedThe flag server now returns off for tengu_umber_stile, read as this account.
v2.1.261tengu_swift_whistle Flag reading movedThe flag server now returns off for tengu_swift_whistle, read as this account.
v2.1.261tengu_swift_whistle Flag reading movedThe flag server now returns off for tengu_swift_whistle, read as this account.
v2.1.257tengu_stellar_drift Flag reading movedThe flag server now returns off for tengu_stellar_drift, read as this account.
v2.1.187tengu_startup_announcements Flag reading movedThe flag server now returns [] for tengu_startup_announcements, read as this account.
v2.1.233tengu_sorrel_trellis Flag reading movedThe flag server now returns off for tengu_sorrel_trellis, read as this account.
v2.1.233tengu_sorrel_trellis Flag reading movedThe flag server now returns off for tengu_sorrel_trellis, read as this account.
v2.1.233tengu_sorrel_trellis Flag reading movedThe flag server now returns off for tengu_sorrel_trellis, read as this account.
v2.1.227tengu_sorrel_trellis Flag reading movedThe flag server now returns off for tengu_sorrel_trellis, read as this account.
v2.1.221tengu_sorrel_trellis Flag reading movedThe flag server now returns off for tengu_sorrel_trellis, read as this account.
v2.1.221tengu_sorrel_trellis Flag reading movedThe flag server now returns off for tengu_sorrel_trellis, read as this account.
v2.1.246tengu_sorrel_trellis Flag reading movedThe flag server now returns off for tengu_sorrel_trellis, read as this account.
v2.1.238tengu_sorrel_trellis Flag reading movedThe flag server now returns off for tengu_sorrel_trellis, read as this account.
v2.1.236tengu_sorrel_trellis Flag reading movedThe flag server now returns off for tengu_sorrel_trellis, read as this account.
v2.1.233tengu_slate_lantern Flag reading movedThe flag server now returns off for tengu_slate_lantern, read as this account.
v2.1.250tengu_slate_lantern Flag reading movedThe flag server now returns off for tengu_slate_lantern, read as this account.
v2.1.239tengu_slate_lantern Flag reading movedThe flag server now returns off for tengu_slate_lantern, read as this account.
v2.1.239tengu_slate_lantern Flag reading movedThe flag server now returns off for tengu_slate_lantern, read as this account.
v2.1.236tengu_slate_lantern Flag reading movedThe flag server now returns off for tengu_slate_lantern, read as this account.
v2.1.274tengu_slate_lantern Flag reading movedThe flag server now returns off for tengu_slate_lantern, read as this account.
v2.1.257tengu_slate_lantern Flag reading movedThe flag server now returns off for tengu_slate_lantern, read as this account.
v2.1.257tengu_slate_lantern Flag reading movedThe flag server now returns off for tengu_slate_lantern, read as this account.
v2.1.232tengu_saddle_lantern Flag reading movedThe flag server now returns off for tengu_saddle_lantern, read as this account.
v2.1.248tengu_saddle_lantern Flag reading movedThe flag server now returns off for tengu_saddle_lantern, read as this account.
v2.1.248tengu_saddle_lantern Flag reading movedThe flag server now returns off for tengu_saddle_lantern, read as this account.
v2.1.232tengu_report_findings_tool Flag reading movedThe flag server now returns off for tengu_report_findings_tool, read as this account.
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