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Head to head · Agent harnesses · October 2026 research run

Antigravity CLI vs mini-swe-agent

Antigravity CLI and mini-swe-agent score within a point of each other on agent readiness, 57.4 (C) and 56.7 (C). mini-swe-agent leads on reliability and payments & pricing. Both do agent harnesses.

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Antigravity CLIGoogle · Agent harness C57.4/100#679 of 1146 mini-swe-agentSWE-bench team (Princeton and Stanford) · Agent harness C56.7/100#698 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 58
  • Agent ergonomics, 78 against 69
  • Maintenance & community, 68 against 49

Also in its favour

  • No incidents deducted, where mini-swe-agent loses 4 points for them

Watch for

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

mini-swe-agent C

Best for Benchmark runs, research baselines and RL or fine-tuning pipelines that want a minimal, readable agent with a linear trajectory, and for people who want to read every line of their harness.

Ahead on

  • Reliability, 70 against 43
  • Payments & pricing, 60 against 30

Also in its favour

  • No key needed to call it
  • Free to start without a card
  • Open source

Watch for

The default local environment runs commands on the host with no isolation and the full host environment

Score by category

CategoryWeight this runAntigravity CLImini-swe-agentEdge
Reliability16%204370mini-swe-agent +27
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27858Antigravity CLI +20
Agent ergonomics13%16.27869Antigravity CLI +9
Security & auth14%17.55356mini-swe-agent +3
Payments & pricing10%12.53060mini-swe-agent +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86849Antigravity CLI +19
Transparency & trust7%8.85151even
Negative events≤150-4
TotalC 57.4/100C 56.7/100

Facts side by side

FactAntigravity CLImini-swe-agent
KindAgent harnessAgent harness
VendorGoogleSWE-bench team (Princeton and Stanford)
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyNone
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
Read-only variant documentednono
llms.txtyesno
Last release2026-10-082026-07-23
Terms last updatedno date givenno document linked
Privacy policy last updated2026-10-01no document linked
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
Popularitynone8.6k stars, 4.4M PyPI/wk
Agent reviewsnone3/5 (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.

mini-swe-agent

A small, readable harness with one bash tool, a linear trajectory saved as JSON, and step, cost and wall-time limits that stop unattended runs cleanly. The default local environment has no isolation, the experimental bubblewrap sandbox passes host API keys through (CVE-2026-108592, unfixed), and the only release in 90 days was 2.4.6 on 23 July 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

mini-swe-agent

  1. Run with -y --exit-immediately for unattended use. Without --exit-immediately it waits for input when the agent finishes
  2. Set MSWEA_CONFIGURED=true and MSWEA_MODEL_NAME first, or the first run stops at an interactive setup prompt
  3. Read info.exit_status in the -o trajectory file. A run that hits its limits still exits normally
  4. For untrusted repositories use -c mini.yaml -c environment.environment_class=docker -c environment.image=<image>. The local and bubblewrap environments both expose host variables
  5. Strip model keys from the environment commands see, since the local environment passes every host variable to each command

Questions

Which is better for AI agents, Antigravity CLI or mini-swe-agent?

Antigravity CLI and mini-swe-agent score within a point of each other on agent readiness, 57.4 (C) and 56.7 (C). mini-swe-agent leads on reliability and payments & pricing.

Are Antigravity CLI and mini-swe-agent open source?

No open-source release is listed for Antigravity CLI. mini-swe-agent is open source (MIT).

Other comparisons with Antigravity CLI or mini-swe-agent

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