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Head to head · Multi-agent orchestration · October 2026 research run

Antigravity CLI vs CLI Manager

CLI Manager scores 65.8 (B) on agent readiness against Antigravity CLI's 57.4 (C), and leads in 5 of 7 scored categories. Antigravity CLI leads on agent ergonomics and maintenance & community. Both do multi-agent orchestration.

Best agent harnesses and coding agents · All 243 harnesses comparisons

Antigravity CLIGoogle · Agent harness C57.4/100#647 of 1084 CLI Managersolhun (Jeong Kyeonghun) · Agent harness B65.8/100#329 of 1084

Which one, for what

Antigravity CLI C

Best for Developers on Google AI plans or Gemini Enterprise who want a terminal agent with a sandbox on by default and access to several model families, depending on plan.

Ahead on

  • Agent ergonomics, 78 against 63
  • Maintenance & community, 68 against 62

Watch for

Closed source. The repository holds the README, changelog and examples, with no source and no licence file

CLI Manager B

Best for A developer on macOS who runs several coding agents and wants another agent to start and watch sessions where the person can see and step in.

Ahead on

  • Reliability, 68 against 43
  • Schema & documentation, 87 against 78
  • Security & auth, 58 against 53
  • Payments & pricing, 60 against 30

Also in its favour

  • Free to start without a card
  • Open source

Watch for

Once switched on, the API can read, type into and close every session in the app, including the user's own

Score by category

CategoryWeight this runAntigravity CLICLI ManagerEdge
Reliability16%204368CLI Manager +25
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27887CLI Manager +9
Agent ergonomics13%16.27863Antigravity CLI +15
Security & auth14%17.55358CLI Manager +5
Payments & pricing10%12.53060CLI Manager +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86862Antigravity CLI +6
Transparency & trust7%8.85154CLI Manager +3
Negative events≤1500
TotalC 57.4/100B 65.8/100

Facts side by side

FactAntigravity CLICLI Manager
KindAgent harnessAgent harness
VendorGooglesolhun (Jeong Kyeonghun)
Hosted endpointno (local only)no (local only)
TransportsStreamable HTTP
AuthOAuth or keyAPI key
PricingFreemiumFree
x402nono
LicenceProprietary. The repository holds the README, changelog and examples, with no source and no licence file. Use is under the Google Antigravity Additional Terms of Service, the Google Terms of Service and the Privacy PolicyMIT
Tools exposednone12
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-082026-10-13
Terms last updatedno date given2026-09-14
Privacy policy last updated2026-10-012026-09-14
Customer content may train modelsyes, with an opt-outnot found in the text
Terms restrict automated accessnot found in the textnot found in the text
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waivernot found in the textnot found in the text
Popularitynone15 stars

Verdicts

Antigravity CLI

Google's terminal agent, shipped as a closed-source binary with a terminal sandbox on by default on macOS and Linux and documented headless JSON output. Interactions are used to improve Google products unless users opt out, and a headless run exits 0 when a tool is denied.

CLI Manager

An agent can open visible terminal sessions, type into them, wait and read the screen through 12 typed MCP tools or a documented REST API, and the user can take any session back. The API reaches every open session once enabled, the app runs only on macOS, and none of the last 35 CI runs on the main branch passed.

Before you call either

Antigravity CLI

  1. Read the status field from --output-format json and read stderr too. A tool refused for lack of approval still exits 0
  2. Pre-approve each shell command and tool a headless run needs with action(target) rules under permissions.allow in ~/.gemini/antigravity-cli/settings.json, because headless runs cannot ask
  3. Export GEMINI_API_KEY after setting modelProvider to gemini. The CLI won't start when the key is missing, and setting the variable alone has no effect
  4. Turn off Enable Telemetry in the Account settings before running on private repositories if Interactions should not be used for product improvement
  5. Set --print-timeout explicitly. The docs give a five-minute default, while agy --help shows 0s

CLI Manager

  1. Ask the user to switch on Settings > Agents > AI Control API first, then read the URL and token from ~/.climanager/control-api.json
  2. On 409 awaiting_input, read the screen and answer with keys such as ["down","enter"]. Leave folder-trust and permission choices to the user
  3. Stop using a session on 409 disconnected. The user took it back
  4. Treat timedOut: true from wait as still running, not as a failure, and wait again
  5. Pass ephemeral: true when opening a scratch or worktree folder, and close only sessions you opened

Questions

Which is better for AI agents, Antigravity CLI or CLI Manager?

CLI Manager scores 65.8 (B) on agent readiness against Antigravity CLI's 57.4 (C), and leads in 5 of 7 scored categories. Antigravity CLI leads on agent ergonomics and maintenance & community.

Are Antigravity CLI and CLI Manager open source?

No open-source release is listed for Antigravity CLI. CLI Manager is open source (MIT).

Other comparisons with Antigravity CLI or CLI Manager

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