tengu_model_catalog_compare
A Claude Code feature flag, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
Model catalog comparison telemetry now records which catalog the models came from and accounts for session-masked ids.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.257.
In the changelogs
4Releases whose published page names tengu_model_catalog_compare.
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v2.1.267
Model-catalog shadow-compare fetch: network access hardcoded on, feature gated off by default
A background model-catalog comparison check now always has network access, though the feature stays off by default
gate cited by this entry
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v2.1.267
Model catalog shadow-compare now cache-aware with bounded late-fetch wait
Background model-catalog comparison checks now use a local cache and no longer block if the network is slow
gate cited by this entry
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v2.1.257
Model catalog telemetry now records catalog source and does session-masking comparisons
Model catalog comparison telemetry now records which catalog the models came from and accounts for session-masked ids.
gate cited by this entry, found in this entry's text
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v2.1.257
Signed remote model catalog ('published catalog') infrastructure
The model list, aliases and defaults can now come from a signed remote catalog document rather than only from app releases.
gate cited by this entry
Gate readings
0No release here has a gate table behind it for this flag. Most published releases have none at all: the readings exist only for versions the pipeline captured flag state on.
First cited
1The earliest release whose published evidence quoted tengu_model_catalog_compare was v2.1.311, 26 Oct 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.
Presence across releases
0The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the feature flag does. All feature flags.