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Name Auto as Copilot Fusion in Copilot agent host chat strings - #347198
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Bhavya U (bhavyaus) wants to merge 2 commits into
Open
Bhavya U (bhavyaus) wants to merge 2 commits into
Bhavya U (bhavyaus) wants to merge 2 commits into
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When the Copilot agent host presents its Auto model as Copilot Fusion, several user-visible strings still said Auto: rate-limit suggestions, the routing row fallback, on-device model labels and notices, the quota notification, and the model picker label shown while no model is selected. These now name Copilot Fusion when the chat's Auto model carries the Fusion flag that the host advertises, and keep the Auto wording otherwise. Model ids, setting keys, command ids and telemetry values are unchanged. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
The On This Device rows looked for the Auto model's Fusion flag in a list already filtered to on-device models, so their notes kept saying Auto while the detail page said Copilot Fusion. The picker now passes the flag explicitly from its full model list. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Bhavya U (bhavyaus) due to an error
November 9, 2026 22:20
Bhavya U (bhavyaus)
enabled auto-merge (squash)
November 9, 2026 22:21
| const name = resolved && displayName(resolved); | ||
| return usageInfoToAutoModeResolution(usage, name); | ||
| const resolutionPart = usageInfoToAutoModeResolution(usage, name); | ||
| return resolutionPart && { ...resolutionPart, ...fusion }; |
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When the Copilot agent host presents its Auto model as Copilot Fusion, several user-visible strings in those chats still said "Auto". This names Copilot Fusion in them, and keeps the Auto wording when the host does not present Auto as Fusion.
What changes
How it is scoped
The wording switches on the
autoModelFusionflag of the chat's own Auto model. That flag is only set from the model metadata that the Copilot agent attaches, so other agents and chats that are not agent host chats keep the Auto wording. Shared code such as the rate-limit messages takes the flag as an optional input that only the agent host session handler passes.Model ids, setting keys, command ids and telemetry values are unchanged.
Not changed
The agent host setting titles "Use On-Device Model in Auto" and "Auto Optimize for Override" still say Auto. They are static setting text registered before the host knows whether Fusion is offered.