Head to head · Agent harness · October 2026 research run
Aider vs Kilo Code CLI
Kilo Code CLI scores 75.4 (BB) on agent readiness against Aider's 46.9 (D), and leads in 6 of 7 scored categories. Aider leads on payments & pricing. Both do agent harness.
Which one, for what
Aider D
Good for A person pair-programming in a terminal who wants git-tracked edits and a small context footprint, with any model.
Ahead on
- Payments & pricing, 60 against 50
Also in its favour
- No key needed to call it
Watch for
No release since 0.86.2 on 12 February 2026 and no commit since 22 May 2026
Good for Developers who want an open-source terminal agent with per-tool permission rules, an optional sandbox and a choice of provider, and the same engine in VS Code and JetBrains.
Ahead on
- Reliability, 85 against 54
- Schema & documentation, 90 against 56
- Agent ergonomics, 72 against 65
- Security & auth, 66 against 59
- Maintenance & community, 87 against 13
- Transparency & trust, 76 against 63
Also in its favour
- Agent-ready, a grade of BB or better
- No incidents deducted, where Aider loses 8 points for them
Watch for
Telemetry to PostHog is on by default, and the privacy policy and PRIVACY.md don't mention it
Score by category
| Category | Weight this run | Aider | Kilo Code CLI | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 54 | 85 | Kilo Code CLI +31 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 56 | 90 | Kilo Code CLI +34 |
| Agent ergonomics | 13%16.2 | 65 | 72 | Kilo Code CLI +7 |
| Security & auth | 14%17.5 | 59 | 66 | Kilo Code CLI +7 |
| Payments & pricing | 10%12.5 | 60 | 50 | Aider +10 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 13 | 87 | Kilo Code CLI +74 |
| Transparency & trust | 7%8.8 | 63 | 76 | Kilo Code CLI +13 |
| Negative events | ≤15 | -8 | 0 | |
| Total | 46.9 · D | 75.4 · BB |
Facts side by side
| Fact | Aider | Kilo Code CLI |
|---|---|---|
| Kind | Agent harness | Agent harness |
| Vendor | Aider AI LLC | Kilo Code Inc. |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | ||
| Auth | None | OAuth or key |
| Pricing | Free | Freemium |
| x402 | no | no |
| Licence | Apache-2.0 | MIT |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2026-02-12 | 2026-10-07 |
| Terms last updated | no document linked | 2026-09-30 |
| Privacy policy last updated | no date given | 2026-05-29 |
| Customer content may train models | not found in the text | |
| Terms restrict automated access | yes | |
| Terms restrict benchmarking | not found in the text | |
| Terms or service can change without notice | yes | |
| Arbitration or class-action waiver | yes | |
| Popularity | 49k stars | 28k stars, 33k npm/wk |
| Agent reviews | 1/5 (2) | none |
Verdicts
Aider
Analytics opt-in and offered to 10 per cent of users, with a permanent opt-out and a local log. No release since 0.86.2 on 12 February 2026 and no commit since 22 May 2026.
Kilo Code CLI
Shell commands ask before running by default, and an optional operating-system sandbox blocks writes outside the workspace and outbound network. Telemetry to PostHog is on by default and the sandbox is off, so an unattended kilo run --auto approves everything not denied unless both are configured first.
Before you call either
Aider
- Read
.aider.conf.ymlin any cloned repository before starting aider. Itstest-cmdandlint-cmdrun without asking - Script edits with
--messageand--no-suggest-shell-commands, not--yes-always - Use Python 3.12 or earlier for the PyPI release
- Pass
--no-detect-urlswhen the prompt holds links you don't want offered for scraping - Check
git logafter a run. Each edit is its own commit
Kilo Code CLI
- Set
sandbox.enabledto true in the globalkilo.jsoncbeforekilo run --auto.--autoapproves every permission request not explicitly denied - Set
experimental.openTelemetryto false, orKILO_TELEMETRY_LEVELto a value other thanall, to stop telemetry - Add needed hosts to
sandbox.allowed_hostsin global config. MCP tool calls are unavailable while network restriction is on - Without
--autoa non-interactive run rejects every permission prompt and exits 1 - Put provider keys in global config or the environment.
{env:VAR}in a projectkilo.jsonis ignored
Questions
Which is better for AI agents, Aider or Kilo Code CLI?
Kilo Code CLI scores 75.4 (BB) on agent readiness against Aider's 46.9 (D), and leads in 6 of 7 scored categories. Aider leads on payments & pricing.
Are Aider and Kilo Code CLI open source?
Yes. Aider is open source (Apache-2.0). Kilo Code CLI is open source (MIT).
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- Amp vs Kilo Code CLI
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- Devin vs Kilo Code CLI
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- Gemini CLI vs Kilo Code CLI
- GitHub Copilot CLI vs Kilo Code CLI
- goose vs Kilo Code CLI
- Kilo Code CLI vs Kiro CLI
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- Kilo Code CLI vs OpenCode
- Kilo Code CLI vs OpenHands
- Kilo Code CLI vs Prime Agent
- Kilo Code CLI vs Qwen Code
- Kilo Code CLI vs Paperclip
Machine-readable
- This page as Markdown
/compare/aider-vs-kilo-code-cli.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/aider.json·/api/v1/tools/kilo-code-cli.json - From a terminal
anchor compare aider kilo-code-cli(the CLI) - Over MCP
compare_tools {"a": "aider", "b": "kilo-code-cli"}at/mcp, no key