Gemini CLI vs Goose in 2026: What Each Does and What to Check

Q: Is AgentHydra free to use?

Yes. AgentHydra is free, with no account or subscription . It is open source under the MIT License . Running it needs Windows, and macOS and Linux builds exist but have not been verified . The facts here give no price for Gemini CLI or Goose, so check their own pages if you are comparing costs .

Compare Gemini CLI and Goose: what each AI agent does, how each is installed, what prices are published, and what to check before you choose.

By SupaKeeper · 2026-10-29

SupaKeeper is published by LunarWerx, which makes some of the tools compared here.

The facts here describe the two tools in different depth. Goose is a general-purpose AI agent that runs on your machine and comes as a desktop app, a command-line tool and an API ^[1] ^[1]. Gemini CLI can be installed with Homebrew or MacPorts ^[2] ^[2], but the facts here say little about its day-to-day work.

Option	What it does	Cost	Install or account
Gemini CLI	Its page says it is an open-source AI agent that brings Gemini into the terminal ^[2]. Its page says it can query and edit large codebases ^[2].	not published	Installed with npm, Homebrew or MacPorts, or run with npx ^[2] ^[2] ^[2] ^[2].
Goose	Its page says it is a general-purpose AI agent that runs on your machine ^[3]. It can start separate subagents that handle tasks in parallel ^[1].	not published	Offered as a desktop app, a command-line tool and an API ^[1]; install steps not published.
AgentHydra	Shows Claude Code, Codex and OpenCode sessions in one searchable list ^[4]. Shows cost at API list prices by day, model, project and account ^[4].	Free, with no account or subscription ^[4].	On Windows, a one-line PowerShell script, a GitHub Releases download, or running from source with Bun, a JavaScript runtime ^[4]. Running it needs Windows ^[4].

The short answer

Goose is a general-purpose AI agent that runs on your machine ^[1], and it comes as a desktop app, a command-line tool and an API ^[1]. Gemini CLI is described in the facts here mainly through its install routes and a change to who can use it, so the comparison table sets out what its page says it does. Goose meets the need to run an agent on your own machine from a desktop app, a command-line tool or an API, according to its page ^[3]. Gemini CLI's sources describe installing it through Homebrew or MacPorts on a Mac ^[2] ^[2], and they note a replacement for some users ^[2]. Check that note before you choose it.

What Gemini CLI and Goose are built for

The facts here for Gemini CLI cover a change to who can use it. Its page says that Gemini CLI was replaced by Antigravity CLI on June 18th, 2026, for unpaid tier and Google One users ^[2]. The facts here do not describe its day-to-day work, so the comparison table gives what its page says it does.

Goose is a general-purpose AI agent that runs on your machine ^[1]. Its page calls it a native open source AI agent with a desktop app, a command-line tool and an API ^[3]. The facts here do not describe which tasks it is built for in more depth, so check its page for that detail before you decide.

What AgentHydra is built for

AgentHydra is made by the team that publishes this site. It shows Claude Code, Codex and OpenCode sessions on your machine in one searchable list, updated live while they run ^[4]. For Claude sessions, it lets you type a reply into the session's own desktop chat, or send one message to several sessions ^[4]. It can move a Claude chat, history included, to another of your accounts ^[4]. It splits a task's pieces across Claude Code sessions on your accounts, and moves a worker to another account when one nears its limit ^[4]. It shows cost at API list prices by day, model, project and account ^[4]. It pairs each failed shell command with the command that fixed it, and can copy those pairs out as a rules file for your agents ^[4]. It also exposes its features to AI agents, including checks that show which account an agent is on and how much quota is left ^[4].

Pricing and fees

AgentHydra is free, with no account or subscription ^[4]. It is open source under the MIT License ^[4]. Its cost view shows API list prices, so the figures are at list prices ^[4].

The facts here give no price for Gemini CLI, so none is published on this page ^[2]. The same applies to Goose, whose facts give no price ^[3]. The facts for neither tool describe a trial or discount, so none is stated. If you need either tool's cost, check its own page, since this page can only report what its sources state.

Setting it up and daily use

Gemini CLI can be installed globally on macOS and Linux using Homebrew ^[2], or on macOS using MacPorts ^[2]. The comparison table lists its other install routes. Goose's facts describe a desktop app, a command-line tool and an API ^[1], but say nothing about how to install it, so check Goose's own page for setup steps.

On Windows, AgentHydra installs with a one-line PowerShell script, or you can download a build from GitHub Releases or run it from source with Bun, a JavaScript runtime ^[4]. Running AgentHydra needs Windows, and its macOS and Linux builds exist but have not been verified ^[4].

Things to check before you choose

Check whether the replacement note affects you, since Gemini CLI was replaced by Antigravity CLI for unpaid tier and Google One users ^[2]. Ask which AI providers each tool connects to, since the facts here do not list them for either tool. Check your operating system, because running AgentHydra needs Windows ^[4]. Ask whether you need a desktop app or only a command-line tool, since Goose's facts describe both along with an API ^[1]. Ask what each tool can do to your files, since the facts here do not describe safety controls for either one.

How to choose

If you want an agent that runs on your own machine and can be used from a desktop app, a command-line tool or an API, Goose's facts describe those ^[3]. If you want to see Claude Code, Codex and OpenCode sessions in one list and keep track of cost at API list prices, AgentHydra covers both ^[4] ^[4]. If you plan to install Gemini CLI on a Mac, Homebrew and MacPorts are the routes its page gives ^[2] ^[2], and you should read the replacement note first ^[2].

Frequently asked questions

Is AgentHydra free to use?

Yes. AgentHydra is free, with no account or subscription ^[4]. It is open source under the MIT License ^[4]. Running it needs Windows, and macOS and Linux builds exist but have not been verified ^[4]. The facts here give no price for Gemini CLI or Goose, so check their own pages if you are comparing costs ^[2].

Was Gemini CLI replaced by Antigravity CLI?

Its page says Gemini CLI was replaced by Antigravity CLI on June 18th, 2026, for unpaid tier and Google One users ^[2]. The facts here do not say what applies to other users, so check Gemini's own page for its current status before you install it ^[2].

Does Goose have a desktop app?

Yes. Goose provides a desktop app, a command-line tool and an API ^[1]. Its page describes Goose as a native open source AI agent with those three ways to use it ^[3]. The facts here do not say which operating systems the desktop app runs on, so check Goose's own page for that detail before you decide.

How can Gemini CLI be installed on a Mac?

Its page says it can be installed globally on macOS and Linux using Homebrew ^[2], and on macOS using MacPorts ^[2]. The facts here say nothing about which route suits your setup, so check the page's own steps before you run either one. The comparison table lists its other install routes.

Does AgentHydra show Claude Code sessions next to Codex sessions?

Yes. AgentHydra shows Claude Code, Codex and OpenCode sessions on your machine in one searchable list, updated live while they run ^[4]. It also lists each Claude and Codex account with its plan and 5-hour and weekly quota ^[4]. The approved claims for AgentHydra do not mention Gemini CLI or Goose, so this page does not say whether either appears in its list.

Free, with no account or subscription. ^[4]

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