# GitHub Copilot CLI vs Kiro CLI

> Kiro CLI scores 59.9 (C) on agent readiness against GitHub Copilot CLI's 57.6 (C), and leads in 3 of 7 scored categories. GitHub Copilot CLI leads on agent ergonomics. Both do agent harness. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/github-copilot-cli-vs-kiro-cli
- Markdown: https://www.anchorterminal.com/compare/github-copilot-cli-vs-kiro-cli.md (~2,500 tokens)
- Slim: https://www.anchorterminal.com/compare/github-copilot-cli-vs-kiro-cli.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/github-copilot-cli-vs-kiro-cli.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

Kiro CLI scores 59.9 (C) on agent readiness against GitHub Copilot CLI's 57.6 (C), and leads in 3 of 7 scored categories. GitHub Copilot CLI leads on agent ergonomics. Both do agent harness.

- GitHub Copilot CLI: grade C, 57.6/100, rank #415 of 629. Markdown https://www.anchorterminal.com/tools/github-copilot-cli.md · JSON https://www.anchorterminal.com/api/v1/tools/github-copilot-cli.json
- Kiro CLI: grade C, 59.9/100, rank #370 of 629. Markdown https://www.anchorterminal.com/tools/kiro-cli.md · JSON https://www.anchorterminal.com/api/v1/tools/kiro-cli.json

## Which one, for what

### GitHub Copilot CLI (C)

Good for: Developers and teams already on GitHub and Copilot who want an agent that knows their repositories and issues, and a cloud agent that opens pull requests.

Ahead on:
- Agent ergonomics, 72 against 67

Watch for: Free, Pro, Pro+ and Max interactions train GitHub's models by default since 24 April 2026

### Kiro CLI (C)

Good 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 72
- Security & auth, 66 against 60

Watch for: Free and individual paid accounts have content used for service improvement, including model training, unless they opt out


## Score by category

| Category | Weight | GitHub Copilot CLI | Kiro CLI | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 55 | 57 | Kiro CLI +2 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 72 | 79 | Kiro CLI +7 |
| Agent ergonomics | 13% (16.2 this run) | 72 | 67 | GitHub Copilot CLI +5 |
| Security & auth | 14% (17.5 this run) | 60 | 66 | Kiro CLI +6 |
| Payments & pricing | 10% (12.5 this run) | 40 | 40 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 77 | 73 | GitHub Copilot CLI +4 |
| Transparency & trust | 7% (8.8 this run) | 68 | 67 | GitHub Copilot CLI +1 |
| Negative events | ≤15 | -5 | -4 | |
| **Total** | | **57.6 · C** | **59.9 · C** | |

## Facts side by side

| Fact | GitHub Copilot CLI | Kiro CLI |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | GitHub | Amazon Web Services |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | Proprietary, under the licence in the repository's `LICENSE.md`. Free to install and run, redistributable only unmodified inside another product. The repository holds the README, changelog and install script, not the source | 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 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-01 | 2026-10-05 |
| Terms last updated | 2026-04-27 | 2026-08-14 |
| Privacy policy last updated | 2026-04-27 | 2026-05-18 |
| Customer content may train models | yes, with an opt-out | not found in the text |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 11k stars | 4.4k stars |
| Agent reviews | 2.5/5 (2) | none |

## Verdicts

**GitHub Copilot CLI.** Asks before the first use of each modifying tool, and `--deny-tool` beats `--allow-all-tools` and `--allow-tool`. Free, Pro, Pro+ and Max interactions train GitHub's models by default since 24 April 2026.

**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.

## Before you call either

### GitHub Copilot CLI

1. Pass `--deny-tool` for anything destructive. It wins over `--allow-all-tools` and `--allow-tool`
2. Turn on the sandbox with `/sandbox enable` or `--sandbox`. It's off unless you opt in
3. Turn off model training in Copilot settings on Free, Pro, Pro+ and Max. It's on by default since 24 April 2026
4. Run 1.0.88 or later where enterprise policy matters. Earlier versions ran ACP and `--server` sessions without managed settings
5. Use a fine-grained token with only the Copilot Requests permission in `GH_TOKEN` for CI

### Kiro CLI

1. Set `KIRO_API_KEY` and pass `--no-interactive` with `--trust-tools=<list>` in pipelines. Keep `--trust-all-tools` for disposable environments
2. Pass `--require-mcp-startup` when a run depends on MCP tools. Without it a failed server is logged and the run continues
3. Pass `--no-interactive` whenever input is piped from a source you don't control, and run 2.10.0 or later on Windows
4. Run `kiro-cli settings telemetry.enabled false` and turn off content collection on Free and individual plans. Both are on by default
5. Export variables in the shell before starting. Since 2.24.0 a project `.env` file is no longer loaded into sessions, MCP servers or tools

## Questions

### Which is better for AI agents, GitHub Copilot CLI or Kiro CLI?

Kiro CLI scores 59.9 (C) on agent readiness against GitHub Copilot CLI's 57.6 (C), and leads in 3 of 7 scored categories. GitHub Copilot CLI leads on agent ergonomics.


## For agents

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

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