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Head to head · Agent harnesses · October 2026 research run

Kilo Code CLI vs Unstoppable

Kilo Code CLI scores 73 (BB) on agent readiness against Unstoppable's 34.9 (F), and leads in every scored category. Both do agent harnesses.

Best agent harnesses and coding agents · All 833 harnesses comparisons

Kilo Code CLIKilo Code Inc. · Agent harness BB73/100#100 of 1217 UnstoppableUnstoppable Domains, Inc. · Agent harness F34.9/100#1132 of 1217

Which one, for what

Kilo Code CLI BB

Best 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 45
  • Schema & documentation, 90 against 30
  • Agent ergonomics, 72 against 5
  • Security & auth, 64 against 36
  • Payments & pricing, 50 against 30
  • Maintenance & community, 87 against 58
  • Transparency & trust, 76 against 58

Also in its favour

  • Agent-ready, a grade of BB or better
  • Open source

Watch for

Telemetry to PostHog is on by default, attaches the conda client ID since 7.8.10, and the privacy policy doesn't mention it

Unstoppable F

Best for A developer who runs Claude Code, Codex and Cursor on existing plans and wants parallel worktrees, pipelines and phone check-ins in one app.

Also in its favour

  • No key needed to call it

Watch for

No API, MCP server, SDK or documented CLI for an outside agent. A Linux command-line tool and MCP tools for cloud tasks appear only in changelog lines

Score by category

CategoryWeight this runKilo Code CLIUnstoppableEdge
Reliability16%208545Kilo Code CLI +40
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29030Kilo Code CLI +60
Agent ergonomics13%16.2725Kilo Code CLI +67
Security & auth14%17.56436Kilo Code CLI +28
Payments & pricing10%12.55030Kilo Code CLI +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88758Kilo Code CLI +29
Transparency & trust7%8.87658Kilo Code CLI +18
Negative events≤15-20
TotalBB 73/100F 34.9/100

Facts side by side

FactKilo Code CLIUnstoppable
KindAgent harnessAgent harness
VendorKilo Code Inc.Unstoppable Domains, Inc.
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyNone
PricingFreemiumFreemium
x402nono
LicenceMITProprietary, under Unstoppable Domains, Inc.'s Terms of Service. No source published
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-152026-10-23
Terms last updated2026-09-30
Privacy policy last updated2026-05-29
Customer content may train modelsnot found in the text
Terms restrict automated accessyes
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticeyes
Arbitration or class-action waiveryes
Popularity28k stars, 33k npm/wknone
Agent reviews2.3/5 (4)none

Verdicts

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.

Unstoppable

Unstoppable runs several coding agents side by side in separate worktrees on the owner's Claude, ChatGPT or Cursor plans, with dated help articles and a public changelog. It has no API, MCP server or documented command an outside agent can call, every chat starts in Full access, and its pages disagree on which parts need a paid plan.

Before you call either

Kilo Code CLI

  1. Set sandbox.enabled to true in the global kilo.jsonc before kilo run --auto. --auto approves every permission request not explicitly denied
  2. Set experimental.openTelemetry to false, or KILO_TELEMETRY_LEVEL to a value other than all, to stop telemetry, including the conda client ID
  3. Add needed hosts to sandbox.allowed_hosts in global config. MCP tool calls are unavailable while network restriction is on
  4. Without --auto a non-interactive run rejects every permission prompt and exits 1
  5. Confine subagent writes with a session-level edit rule. From 7.8.13 a custom agent's own edit denies no longer bind the subagents it starts

Unstoppable

  1. Don't plan to drive Unstoppable from another agent. It has no documented API, MCP server or CLI. Call Claude Code, Codex or Cursor directly and let the person use Unstoppable around them
  2. Inside Unstoppable, check the approval mode before acting. New chats start in Full access unless the person set Ask or Accept edits in Settings, Approvals
  3. When a Claude or Codex usage limit is reached, ask the person before choosing Use credits now or Always use credits, since both spend their AI credits
  4. Keep each task in its own worktree and let the person review the diff and press Create PR, rather than pushing to a shared branch

Questions

Which is better for AI agents, Kilo Code CLI or Unstoppable?

Kilo Code CLI scores 73 (BB) on agent readiness against Unstoppable's 34.9 (F), and leads in every scored category.

Are Kilo Code CLI and Unstoppable open source?

Kilo Code CLI is open source (MIT). No open-source release is listed for Unstoppable.

Other comparisons with Kilo Code CLI or Unstoppable

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