Chief + Gemini: Better Together

Google's Antigravity CLI (`agy`) runs Gemini models as a coding agent in your terminal, under your own Google sign-in. Chief is the AI-native layer that scales it across your entire portfolio — proactively planning what to build, decomposing complex goals, and coordinating agents end-to-end.

Start free →

At a glance

CapabilityChiefAntigravity CLI
What it isAI-native agent managerGoogle's coding agent CLI for Gemini models
ScopeAll projects, agents, team membersOne codebase per session
Decomposition✅ Goal → milestones → one-shot execution❌ Manual task scoping
Proactive planning✅ Proposes next steps from project state❌ Waits for prompts
Multi-project✅ Portfolio-wide visibility and dispatch❌ Single project per session
Multi-provider✅ BYOA — mix per taskModels available on your Google plan
Billing✅ Free to start, bring your own agents✅ Included in your Google plan's limits
Quality gates✅ Auto-review against criteria❌ Manual review of all output

What is Chief?

Chief is an AI-native agent manager. It sits above coding agents like the Antigravity CLI and handles everything between "here's what I want" and "here's the shipped result" — planning what to build, figuring out what comes next, dispatching agents across your entire portfolio, and reviewing output before it ships.

Chief uses a BYOA (bring-your-own-agent) model. You connect the coding agents you already use, including Gemini through the Antigravity CLI, signed in with your own Google account on your own machine. No lock-in, no migration, no separate API key.

How Chief works with Gemini

Your sign-in, your machine. Chief's relay runs the official agy binary on your computer, the same way you would run it yourself. You sign in once by running agy in a terminal. Chief never reads your Google credentials or tokens.

Your choice of Gemini model. Chief uses Gemini 4 Argon by default, and you can switch to Gemini 3.8 Flash in Settings. If your Google account can't use Argon, Chief uses Flash instead of failing the task.

Your usage limits, visible. Google sets usage limits for each group of models in the Antigravity CLI. Chief's usage card shows how much of each limit you have used and when it resets, read straight from agy, so you can plan work around it.

What Chief adds on top

1. Plan and execute complex goals in one shot

Give Chief "add usage-based billing with team plans" and it decomposes the goal into dependency-aware milestones, each with acceptance criteria and a review gate. You approve the plan once; Chief dispatches Gemini, and any other agents you use, through the whole sequence.

2. Proactive management that figures out what's next

Chief analyzes project state, understands what's been completed, what's blocked, and what's ready to start — then proposes the next milestones. You make decisions; Chief drives the pace.

3. Scale agents across your entire portfolio

Dispatch Gemini to some repos, Claude Code or Codex to others, and see all progress in one dashboard. Chief tracks what's in flight everywhere and sequences cross-project dependencies.

4. Mix the right provider for each task

Chief's BYOA model lets you choose the agent per project or per milestone. Use Gemini where it suits the work and keep the rest of your roster for what each agent handles best, all from a single interface.

5. Quality gates between agent output and merge

Chief reviews every completed milestone against its acceptance criteria before marking it done, so more agents doesn't mean more unreviewed output.

Getting started in 5 minutes

  1. Sign up for Chief — Free plan, no credit card required.
  2. Install Google's Antigravity CLI (version 1.3.4 or later) and run agy once in a terminal to sign in with your Google account.
  3. Connect your coding agents — Chief uses a BYOA model. Bring Gemini alongside Claude Code, Codex, or others.
  4. Import a project and set a goal — describe what you want accomplished in plain language.
  5. Approve the plan — Chief proposes milestones with acceptance criteria, dispatches the agents and reviews the output.

FAQ

Is Chief a replacement for the Antigravity CLI?

No. Chief manages coding agents; it doesn't replace them. Gemini does the coding through agy. Chief does the planning, dispatching, and reviewing.

Does Chief use my Google plan or a separate API key?

Your plan. Chief runs agy on your machine under the account you signed in with, so the work counts against that account's usage limits. No API key is needed.

Does Chief see my Google credentials?

No. Chief only runs the agy commands you could run yourself. It never reads the sign-in tokens agy stores or its settings files. Your prompts and code go to Google under the terms you accepted for the Antigravity CLI, the same as when you use it directly.

Can Chief manage Gemini alongside other agents?

Yes. Use Gemini for some tasks and Claude Code, Codex, Qwen Code, OpenCode, or Kimi Code for others — Chief dispatches the right agent for each milestone from a single interface.

Can I still use the Antigravity CLI directly?

Absolutely. Chief manages background agent work — it doesn't take over your terminal. Use agy interactively anytime, and use Chief for the work you want to delegate.

See also

Chief vs Cursor

Cursor perfected the AI-enhanced IDE. Chief is what comes next — the platform for AI-native builders who manage agent teams instead of writing code by hand.

Chief vs Windsurf

Windsurf is the AI-powered IDE for interactive coding. Chief is where AI-native builders go next — managing agent teams across every project instead of coding by hand.

Chief vs Conductor

Conductor (conductor.build) runs parallel Claude Code and Codex agents on your Mac. Chief plans the work, keeps agents busy and reviews the output.

Chief vs Emdash

Emdash is old-school orchestration — you define tasks, you pick agents, you review every diff. Chief is AI-native management that proactively proposes next steps toward your goals.

Chief vs Devin

Devin is an autonomous AI engineer that handles tasks end-to-end. Chief is the management layer that coordinates multiple agents across your portfolio — planning, dispatching, and reviewing at scale.

Chief + Claude Code

Use Claude Code on many repos at once. Chief plans milestones, runs Claude Code in parallel and reviews the output, so you approve results, not prompts.

Chief + Codex

Codex is a cloud-native coding agent. Chief scales it across your portfolio — proactively planning what to build, decomposing complex goals, and mixing the right provider for each task.

Chief + Qwen Code

Qwen Code is a powerful open-weight coding agent. Chief scales it across your portfolio — proactively planning what to build, decomposing complex goals, and coordinating agents end-to-end.

Chief + OpenCode

OpenCode is a flexible open-source coding agent that works with any LLM provider. Chief scales it across your portfolio — proactively planning what to build, decomposing complex goals, and coordinating agents end-to-end.

Chief + Kimi

Kimi Code brings a 1M-token context window to your terminal on a flat subscription. Chief scales it across your portfolio — proactively planning what to build, decomposing complex goals, and coordinating agents end-to-end.

Chief + Muse Code

Muse Code runs Meta's Muse models in your terminal on your own subscription. Chief plans the work, dispatches it across projects and reviews each result.

Chief + Copilot

Copilot assists you in the editor and on GitHub. Chief manages the coding agents that build across your portfolio — planning, dispatching, and reviewing.

Chief + Aider

Aider is the open-source pair programmer in your terminal. Chief manages coding agents across your whole portfolio — planning, dispatching, and reviewing.

Ready to manage your agents?

_Gemini and Antigravity are trademarks of Google LLC. Chief is an independent product and is not affiliated with, sponsored by, or endorsed by Google._

Start free →