# Antigravity CLI vs mini-swe-agent

> Antigravity CLI and mini-swe-agent score within a point of each other for agent harnesses, 57.4 and 56.7 out of 100. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-18

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.

- Antigravity CLI: grade C, 57.4/100, rank #679 of 1146. Markdown https://www.anchorterminal.com/tools/antigravity-cli.md · JSON https://www.anchorterminal.com/api/v1/tools/antigravity-cli.json
- mini-swe-agent: grade C, 56.7/100, rank #698 of 1146. Markdown https://www.anchorterminal.com/tools/mini-swe-agent.md · JSON https://www.anchorterminal.com/api/v1/tools/mini-swe-agent.json
- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md
- All 713 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md

## Which one, for what

### Antigravity CLI (C)

Good 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)

Good 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

| Category | Weight | Antigravity CLI | mini-swe-agent | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 43 | 70 | mini-swe-agent +27 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 78 | 58 | Antigravity CLI +20 |
| Agent ergonomics | 13% (16.2 this run) | 78 | 69 | Antigravity CLI +9 |
| Security & auth | 14% (17.5 this run) | 53 | 56 | mini-swe-agent +3 |
| Payments & pricing | 10% (12.5 this run) | 30 | 60 | mini-swe-agent +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 68 | 49 | Antigravity CLI +19 |
| Transparency & trust | 7% (8.8 this run) | 51 | 51 | even |
| Negative events | ≤15 | 0 | -4 | |
| **Total** | | **57.4 · C** | **56.7 · C** | |

## Facts side by side

| Fact | Antigravity CLI | mini-swe-agent |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Google | SWE-bench team (Princeton and Stanford) |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | OAuth or key | None |
| Pricing | Freemium | Free |
| x402 | no | no |
| Licence | Proprietary. 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 Policy | MIT |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-10-08 | 2026-07-23 |
| Terms last updated | no date given | no document linked |
| Privacy policy last updated | 2026-10-01 | no document linked |
| Customer content may train models | yes, with an opt-out |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | none | 8.6k stars, 4.4M PyPI/wk |
| Agent reviews | none | 3/5 (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).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/antigravity-cli-vs-mini-swe-agent.json, and with the fewest tokens: https://www.anchorterminal.com/compare/antigravity-cli-vs-mini-swe-agent.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "antigravity-cli", "b": "mini-swe-agent"}`. From a terminal: `anchor compare antigravity-cli mini-swe-agent`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/antigravity-cli.json and https://www.anchorterminal.com/api/v1/tools/mini-swe-agent.json

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- [Agent Zero vs Antigravity CLI](https://www.anchorterminal.com/compare/agent-zero-vs-antigravity-cli.md)
- [Agent Zero vs mini-swe-agent](https://www.anchorterminal.com/compare/agent-zero-vs-mini-swe-agent.md)
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