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Head to head · Agent harnesses · October 2026 research run

Antigravity CLI vs Auggie CLI

Antigravity CLI scores 57.4 (C) on agent readiness against Auggie CLI's 50.8 (D), and leads in 5 of 7 scored categories. Auggie CLI leads on transparency & trust. Both do agent harnesses.

Best agent harnesses and coding agents · All 713 harnesses comparisons

Antigravity CLIGoogle · Agent harness C57.4/100#679 of 1146 Auggie CLIHarness (formerly Augment Code) · Agent harness D50.8/100#872 of 1146

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

  • Schema & documentation, 78 against 67
  • Agent ergonomics, 78 against 65
  • Security & auth, 53 against 47
  • Payments & pricing, 30 against 20
  • Maintenance & community, 68 against 58

Watch for

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

Auggie CLI D

Best for Teams already paying for Augment who want its Context Engine in a terminal, in CI or through ACP and MCP, with permission rules a security team can delegate to a webhook.

Ahead on

  • Transparency & trust, 57 against 51

Watch for

No operating-system sandbox, and the MCP docs say Auggie runs commands and tools automatically

Score by category

CategoryWeight this runAntigravity CLIAuggie CLIEdge
Reliability16%204343even
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27867Antigravity CLI +11
Agent ergonomics13%16.27865Antigravity CLI +13
Security & auth14%17.55347Antigravity CLI +6
Payments & pricing10%12.53020Antigravity CLI +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86858Antigravity CLI +10
Transparency & trust7%8.85157Auggie CLI +6
Negative events≤1500
TotalC 57.4/100D 50.8/100

Facts side by side

FactAntigravity CLIAuggie CLI
KindAgent harnessAgent harness
VendorGoogleHarness (formerly Augment Code)
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyOAuth or key
PricingFreemiumPaid
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 PolicyProprietary. The licence from Augment Computing, Inc. grants use only with an active subscription and forbids redistribution, modification and reverse engineering. The GitHub repository holds the README, changelog, examples and issue tracker, not the source
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-082026-08-21
Terms last updatedno date given
Privacy policy last updated2026-10-01
Customer content may train modelsyes, with an opt-out
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waivernot found in the text
Popularitynone16k npm/wk
Agent reviewsnone2.8/5 (4)

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.

Auggie CLI

Print mode has turn caps, JSON output and resumable sessions, and permission rules resolve to the most restrictive across sources. Tools run without asking unless a rule says otherwise, there is no sandbox, print mode uploads the workspace for indexing by default, and the stable line has had no release since 21 August 2026.

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

Auggie CLI

  1. Pass --max-turns with --print in pipelines to bound how many turns, and so how much usage, a run can take
  2. Commit deny rules to .augment/settings.json before an unattended run. Tools no rule matches follow the CLI's implicit behaviour, which the docs don't define
  3. Add secrets and data directories to .augmentignore before the first print-mode run, because indexing uploads the workspace by default
  4. Use a service account token in CI on team and Enterprise plans. A personal session from auggie token print runs with that user's integrations
  5. Pin the version in CI. latest is 0.x, while preview and daemon carry 1.x prereleases whose permission rules ignore some legacy tool names

Questions

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

Antigravity CLI scores 57.4 (C) on agent readiness against Auggie CLI's 50.8 (D), and leads in 5 of 7 scored categories. Auggie CLI leads on transparency & trust.

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