Day 7 receipt
Copilot Fusion
Day 2 of 7GitHub's model router and orchestrator for Copilot, generally available with Standard, High and Max effort levels.
Launch dayWhat they claimed, quoted word for word · 3
“In the Artificial Analysis Coding Agent Index, Copilot Fusion Max scored 60, within two points of Claude Code with Opus 5.5 Max.”
Vendor-quoted benchmark result; no independent replication from users yet.
“GitHub Copilot Fusion is generally available.”
One report says a Fusion tier is selectable in a client but fails on use.
“Copilot Fusion is available on all Copilot plans in Visual Studio Code, the GitHub Copilot app, GitHub Copilot CLI, and JetBrains IDEs.”
Reports show gaps in the JetBrains plugin and the CLI flag for tiers, so availability is uneven so far.
Day 7What real users report · 2
In IntelliJ, Copilot Fusion Standard shows as selected and available, but sending a prompt fails with an unsupported-model error, while a non-Fusion model works. The reporter also saw the CLI say the Fusion alias needs dynamic Auto tiers.
Open as of 30 Oct · 1 comment · Open the source
The Copilot CLI documentation describes a flag for setting the Fusion tier, but the latest public CLI release rejects it as an unexpected argument. A commenter says a feature flag for dynamic Auto tiers resolved their issue and asks where it is documented.
Open as of 30 Oct · 1 comment · 1 reply · Open the source