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GitHub Makes Agentic Workflows and Copilot Fusion Generally Available and Rolls Out Shared Copilot Automations in October 28 Changelog Entries

GitHub's October 28 changelog entries describe general availability for Agentic Workflows and Copilot Fusion, shared Copilot Automations, and a public preview of Copilot Projects.

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Overview

GitHub published several changelog entries dated October 28, 2026 covering its coding-agent products. According to the GitHub changelog, GitHub Agentic Workflows, “an open source project from GitHub Next, is now generally available.” A separate entry on Copilot Fusion says that feature is also generally available, and a third entry says shared Copilot Automations are rolling out.

Agentic Workflows

According to GitHub, the tool automates reasoning-based tasks such as issue triage, CI failure analysis, documentation updates and test writing by running coding agents inside GitHub Actions. Users write the automation in natural-language Markdown files, which GitHub Agentic Workflows compiles into standard Actions YAML, and the workflows reuse existing runner groups and policy constraints. Each workflow can be powered by GitHub Copilot or by a coding agent the user brings.

The changelog lists layered safeguards:

  • Agents access GitHub content under integrity filter rules.
  • Permissions are read-only by default.
  • Execution happens in a sandboxed container behind the Agent Workflow Firewall.
  • Output is validated through a safe outputs process.
  • A dedicated threat detection job scans proposed changes before they are applied.

Additions since the public preview, per the same entry, include support for self-hosted Actions Runner Controller (ARC) runners with Docker-in-Docker, a gh aw forecast command whose budget forecasting now covers threat detection credits and monthly ranges, per-workflow model provider selection, a model router that optimizes for task type and difficulty, and the option to run agents in Cloud Hypervisor or NVX micro-VMs with enclave support.

GitHub says the product is available on github.com for GitHub Free, Team and Enterprise, and that using the default GitHub Copilot CLI engine requires a Copilot license.

Shared Copilot Automations

Per GitHub’s entry, shared automations are visible to everyone with read access to a repository and editable by those with write access. The changelog states: “AI credits are billed to the organization or user that owns the repository, rather than to the person who created the automation.” Actions are attributed to Copilot rather than to individual users, and automations belong to the repository and keep running if their creator leaves. Users select Shared under Type when creating one, and the type cannot be changed afterward. The rollout covers Copilot Pro, Pro+, Max, Business and Enterprise plans.

Copilot Fusion

GitHub says Copilot Fusion lets developers choose an effort level instead of a specific model: Fusion Standard, Fusion High or Fusion Max. It describes three execution patterns. In Single, one model solves the task directly; in Cascade, an efficient model drafts a response and quality assessment decides whether it is accepted or escalated to a stronger model; in Critique, one model drafts, another reviews, and the original model revises.

The entry reports that, in the Artificial Analysis Coding Agent Index, Copilot Fusion Max scored 60, “within two points of Claude Code with Opus 5.5 Max.” GitHub adds that it delivered that result at about half the average API cost per task, using about half as many tokens and taking about 40% less time per task. These figures appear in GitHub’s own announcement.

Users are billed at each model’s standard rate, and for a limited time paid Copilot plan users receive a 30% discount on model costs when using Fusion. GitHub lists availability on all Copilot plans across Visual Studio Code, the GitHub Copilot app, GitHub Copilot CLI and JetBrains IDEs. Administrators can control model access through model policies and set Fusion as the default for enterprise users.

Copilot Projects

In a separate entry, GitHub says “Copilot Projects are now in public preview.” It describes projects as one place for work that spans several repositories or none, where Copilot runs as many agents as the work needs and returns results such as pull requests for review. The same entry says computer use is in public preview on macOS and Windows, that Copilot asks for approval before controlling an app, and that organizations can disable the feature through managed settings.

What We Don’t Know

The cited entries do not say how many teams use Agentic Workflows, and the Fusion benchmark and cost figures come from GitHub’s announcement without independent confirmation in the cited material.