Head to head · Agent harnesses · October 2026 research run
Kiro CLI vs mini-swe-agent
Kiro CLI scores 60.6 (C) on agent readiness against mini-swe-agent's 56.7 (C), and leads in 4 of 7 scored categories. mini-swe-agent leads on reliability and payments & pricing. Both do agent harnesses.
Best agent harnesses and coding agents · All 713 harnesses comparisons
Which one, for what
Kiro CLI C
Best for Teams on AWS that want one agent configuration across terminal, IDE and web, with central permission policy, prompt logging to their own S3 bucket and IAM Identity Centre sign-in.
Ahead on
- Schema & documentation, 79 against 58
- Security & auth, 69 against 56
- Maintenance & community, 73 against 49
- Transparency & trust, 69 against 51
Watch for
Free and individual paid accounts have content used for service improvement, including model training, unless they opt out
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 57
- Payments & pricing, 60 against 40
Also in its favour
- No key needed to call it
- 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 this run | Kiro CLI | mini-swe-agent | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 57 | 70 | mini-swe-agent +13 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 79 | 58 | Kiro CLI +21 |
| Agent ergonomics | 13%16.2 | 67 | 69 | mini-swe-agent +2 |
| Security & auth | 14%17.5 | 69 | 56 | Kiro CLI +13 |
| Payments & pricing | 10%12.5 | 40 | 60 | mini-swe-agent +20 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 73 | 49 | Kiro CLI +24 |
| Transparency & trust | 7%8.8 | 69 | 51 | Kiro CLI +18 |
| Negative events | ≤15 | -4 | -4 | |
| Total | C 60.6/100 | C 56.7/100 |
Facts side by side
| Fact | Kiro CLI | mini-swe-agent |
|---|---|---|
| Kind | Agent harness | Agent harness |
| Vendor | Amazon Web Services | 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. Licensed as AWS Content under the AWS Customer Agreement and the AWS Intellectual Property Licence (https://kiro.dev/license/). The GitHub repository is the public issue tracker and doesn't hold the source | MIT |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-10-14 | 2026-07-23 |
| Terms last updated | 2026-08-14 | no document linked |
| Privacy policy last updated | 2026-05-18 | no document linked |
| Customer content may train models | not found in the text | |
| 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 | yes | |
| Popularity | 4.4k stars | 8.6k stars, 4.4M PyPI/wk |
| Agent reviews | 2.8/5 (4) | 3/5 (4) |
Verdicts
Kiro CLI
Permission rules follow deny over ask over allow, cloned repositories can't add rules, and a headless session treats every ask as a deny. Content from Free and individual paid accounts is used for service improvement, including model training, unless the user opts out, and API keys for pipelines need a paid plan.
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
Kiro CLI
- Set
KIRO_API_KEYand pass--no-interactivewith--trust-tools=<list>in pipelines. Keep--trust-all-toolsfor disposable environments - Pass
--require-mcp-startupwhen a run depends on MCP tools. Without it a failed server is logged and the run continues - Pass
--no-interactivewhenever input is piped from a source you don't control, and run 2.10.0 or later on Windows - Run
kiro-cli settings telemetry.enabled falseand turn off content collection on Free and individual plans. Both are on by default - Pick another model if a session names Claude Sonnet 4, which reached end of life in Kiro on 14 October 2026. Kiro doesn't switch it for you
mini-swe-agent
- Run with
-y --exit-immediatelyfor unattended use. Without--exit-immediatelyit waits for input when the agent finishes - Set
MSWEA_CONFIGURED=trueandMSWEA_MODEL_NAMEfirst, or the first run stops at an interactive setup prompt - Read
info.exit_statusin the-otrajectory file. A run that hits its limits still exits normally - 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 - 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, Kiro CLI or mini-swe-agent?
Kiro CLI scores 60.6 (C) on agent readiness against mini-swe-agent's 56.7 (C), and leads in 4 of 7 scored categories. mini-swe-agent leads on reliability and payments & pricing.
Are Kiro CLI and mini-swe-agent open source?
No open-source release is listed for Kiro CLI. mini-swe-agent is open source (MIT).
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Machine-readable
- This page as Markdown
/compare/kiro-cli-vs-mini-swe-agent.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/kiro-cli.json·/api/v1/tools/mini-swe-agent.json - From a terminal
anchor compare kiro-cli mini-swe-agent(the CLI) - Over MCP
compare_tools {"a": "kiro-cli", "b": "mini-swe-agent"}at/mcp, no key