GitHub Copilot CLI now has a refreshed terminal surface and a rubber duck agent that can critique plans, implementation, or tests before the main agent continues.

Prompt scheduling with /every and /after points toward terminal agents that keep checking builds, usage, or repo state over time. Voice input is local, which matters for teams evaluating privacy and developer ergonomics.

Field|Current evidence
Primary source|GitHub: Copilot CLI: Improved UI, rubber duck, prompt scheduling, and voice input
Source date|2026-06-02
Update scope|terminal agent review, scheduled prompts, local voice input, and CLI ergonomics
Verification note|Official source only; no search-result scraping, no ranking guarantee, no uncited claims

The notable change is the critic agent inside a terminal workflow. Rubber duck review creates a second pass before the main agent continues, which can catch weak plans, missing tests, or risky implementation shortcuts. Scheduled prompts also move CLI agents toward monitoring work, not only answering one command at a time.

For teams, the first evaluation should be operational rather than theatrical: schedule a build check, ask the critic to review a migration plan, and inspect whether the CLI produces auditable output. Voice input is useful only if it fits the team's privacy, accessibility, and workstation norms.

This update is strongest for developers who prefer terminal-first workflows. It is less decisive for organizations that need centralized review logs, because prompt scheduling and critic behavior still need policy and retention boundaries.

Limits and open questions: the source does not prove reliability across shells, operating systems, or private repositories. Claims about productivity gains should wait for measured before-and-after data from real teams. Source handling note: SignalFront records the publisher, publication date, and source URL on the page, then keeps the update date tied to evidence-backed edits rather than automatic refreshes. When source material is thin, the system keeps interpretation narrow and waits for stronger documentation. Editorial review compares the new claim against the article summary, fact table, internal links, and listed source before allowing another optimization pass. Search outcomes are measured after publication rather than assumed at writing time.

GitHub's Copilot CLI refresh adds a redesigned terminal experience, a critic agent, scheduled prompts, and local voice input.

Copilot CLI: Improved UI, rubber duck, prompt scheduling, and voice input

Copilot CLI Adds Rubber Duck Review, Prompt Scheduling, and Voice Input

Google's Antigravity CLI announcement frames the migration as a move from a terminal assistant to a unified agent-first platform. The new CLI keeps critical Gemini CLI features such as Agent Skills, Hooks, Subagents, and Extensions as Antigravity plugins.

The important timeline is operational: individual and free Gemini CLI and Gemini Code Assist users need to transition before June 18, 2026, while enterprise access remains under paid Google Cloud and Gemini Enterprise arrangements.

Field|Current evidence
Primary source|Google: An important update: Transitioning Gemini CLI to Antigravity CLI
Source date|2026-05-19
Update scope|Gemini CLI migration path, Antigravity plugins, and multi-agent execution
Verification note|Official source only; no search-result scraping, no ranking guarantee, no uncited claims

The useful signal is the migration deadline and plugin continuity. Google is positioning Antigravity CLI as the agent-first successor while preserving important Gemini CLI concepts such as Skills, Hooks, Subagents, and Extensions. That gives teams a concrete checklist instead of a vague platform announcement.

Teams using Gemini CLI should audit scripts, extensions, account type, and access path before the transition date. The migration work is not only installing a new CLI; it includes confirming plugin behavior, enterprise eligibility, and how asynchronous agents are monitored.

This update is a planning trigger for teams with Gemini CLI in developer workflows. If the CLI is experimental, the team can wait; if it is part of internal automation, migration testing should happen before deadline pressure appears.

Limits and open questions: the source does not prove parity for every extension, nor does it describe every enterprise billing path. The article should keep those as open items until Google publishes detailed migration notes. Source handling note: SignalFront records the publisher, publication date, and source URL on the page, then keeps the update date tied to evidence-backed edits rather than automatic refreshes. When source material is thin, the system keeps interpretation narrow and waits for stronger documentation. Editorial review compares the new claim against the article summary, fact table, internal links, and listed source before allowing another optimization pass. Search outcomes are measured after publication rather than assumed at writing time.

Google is unifying Gemini CLI and Code Assist workflows into Antigravity CLI, an agent-first platform with asynchronous multi-agent execution.

IDE & CLI

Copilot CLI Adds Rubber Duck Review, Prompt Scheduling, and Voice Input

Google Moves Gemini CLI Users toward Antigravity CLI