GitHub has made two changes to Copilot code review. Teams can now trigger reviews programmatically, and the default effort setting has moved to a more thorough tier. Each change is modest on its own. Together, they matter for teams watching their Copilot consumption, because reviews will become easier to run automatically and each one will default to a heavier setting.
What changed
According to GitHub's changelog dated October 2, 2026, developers can now request a Copilot code review through the supported REST and GraphQL APIs. They can also optionally specify the review effort level for each request. 3 GitHub says the goal is to let teams start reviews from their own scripts, workflows and internal tools rather than only from the pull request interface. 3 The feature is generally available on Copilot Pro, Pro+, Max, Business and Enterprise plans. 13
The second change is the default effort level. GitHub first announced on August 28, 2026 that the "Default" review effort would resolve to "Balanced" for both new and existing repositories and organizations using Copilot code review. That switch took effect on September 28. 3 Organizations that had explicitly chosen the "Lite" level kept that setting. Anyone who left the setting on Default now gets Balanced. 3 Admins who want the lighter mode can change the level back to Lite at whatever scope they manage. 3
What the announcement leaves open
Windows Forum's coverage notes some gaps in the changelog. GitHub does not say whether using the API turns on automatic review. It also does not explain which permissions or prerequisites an API request requires. 1 The outlet points out that GitHub's documentation already described one programmatic route: adding copilot-pull-request-reviewer[bot] as a reviewer through the REST API. 1 The new part appears to be official API support with per-request control over effort, not the ability to trigger a review from code at all.
Windows Forum also warns that Balanced can use more AI credits than Lite. 1 GitHub's own post presents the shift as a quality and configuration change and says little about cost. It tells users who "prefer Lite" how to switch back. 3
The cost context
GitHub's billing documentation shows why the default matters. Its page on Copilot requests, now labeled "legacy," states that starting June 1, 2026, Copilot code review carries a model multiplier of 13. Each time Copilot reviews a pull request or reviews code in the IDE, the user's monthly premium-request quota drops by 13. 2 The same page explains that premium-request consumption varies by feature and model. For agentic features, only the prompts a user sends count, not the tool calls Copilot makes on its own. 2
The sources do not say how the 13x figure relates to the effort tiers. The documented multiplier applies to code review as a feature. Nothing cited states that Balanced carries a different multiplier than Lite, or that Lite avoids it. Windows Forum's mention of "AI credits" alongside the "legacy" label on the requests page also suggests GitHub's billing terms may be in transition. 12 Readers should check their own plan's current billing documentation rather than assume a fixed per-tier price.
Why it matters
The direction is still clear. An API trigger makes it simple to wire Copilot review into CI pipelines, bots and internal tools, where reviews can fire on every push or every pull request without anyone deciding to run one. That is the convenience GitHub is selling. 3 But each review already counts against premium-request quotas at a steep documented rate. 2 And the default now points to a tier that one outlet says can consume more. 1 Automated review can therefore cost far more than manual, occasional review.
The timing reinforces this. The default switched in late September, and API support followed a few days later in early October. 3 Teams that never touched their effort settings were moved to Balanced automatically. Teams that now script reviews through the API will inherit that default unless they set the effort level on each request. 3
Our read
This is a sensible feature release with a billing side that GitHub's announcement underplays. Programmatic review requests with per-call effort control are useful. The per-request effort parameter is arguably the most important part, because it lets teams use Lite for routine or high-volume automated checks and save Balanced for changes that need closer scrutiny.
Before wiring Copilot review into automation, organizations should:
- Audit their effort settings.
- Decide where Lite is good enough.
- Confirm how their plan meters code review under the current billing model.
The default changed quietly. The meter, as documented, did not get any cheaper.
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