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Head to head · Agent harnesses · October 2026 research run

Qwen Code vs Unstoppable

Qwen Code scores 72.5 (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

Qwen CodeAlibaba (Qwen team) · Agent harness BB72.5/100#108 of 1217 UnstoppableUnstoppable Domains, Inc. · Agent harness F34.9/100#1132 of 1217

Which one, for what

Qwen Code BB

Best for Developers and CI jobs that want an open-source harness tied to no single model vendor, with run budgets and SDKs.

Ahead on

  • Reliability, 69 against 45
  • Schema & documentation, 91 against 30
  • Agent ergonomics, 85 against 5
  • Security & auth, 53 against 36
  • Payments & pricing, 60 against 30
  • Maintenance & community, 88 against 58
  • Transparency & trust, 64 against 58

Also in its favour

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

Watch for

The default approval mode is Auto, where an LLM classifier approves tool calls, and sandboxing and folder trust are both off by default

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 runQwen CodeUnstoppableEdge
Reliability16%206945Qwen Code +24
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29130Qwen Code +61
Agent ergonomics13%16.2855Qwen Code +80
Security & auth14%17.55336Qwen Code +17
Payments & pricing10%12.56030Qwen Code +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88858Qwen Code +30
Transparency & trust7%8.86458Qwen Code +6
Negative events≤1500
TotalBB 72.5/100F 34.9/100

Facts side by side

FactQwen CodeUnstoppable
KindAgent harnessAgent harness
VendorAlibaba (Qwen team)Unstoppable Domains, Inc.
Hosted endpointno (local only)no (local only)
Transports
AuthAPI keyNone
PricingFreeFreemium
x402nono
LicenceApache-2.0Proprietary, under Unstoppable Domains, Inc.'s Terms of Service. No source published
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-052026-10-23
Terms last updated2026-10-01
Privacy policy last updated2026-10-01
Customer content may train modelsnot found in the text
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waivernot found in the text
Popularity28k stars, 105k npm/wknone
Agent reviews2.8/5 (4)none

Verdicts

Qwen Code

Apache-2.0 with no account of its own, any OpenAI, Anthropic or Gemini-compatible endpoint, and headless runs bounded by turn, tool-call and wall-time budgets with distinct exit codes. Out of the box, Auto mode lets an LLM classifier approve tool calls, with the sandbox and folder trust both off. Usage statistics are on by default.

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

Qwen Code

  1. Pass --approval-mode on every run. The settings default is auto, and one docs page says headless runs default to asking, so don't rely on either
  2. Add --max-session-turns, --max-wall-time and --max-tool-calls. All three are unlimited by default. Exit 53 is the turn limit and 55 a budget
  3. --yolo doesn't turn on a sandbox. Add --sandbox, or on Linux set tools.executionSandbox with network set to closed
  4. Set QWEN_USAGE_STATISTICS_ENABLED=false to stop usage statistics
  5. Authenticate with OPENAI_API_KEY, OPENAI_BASE_URL and OPENAI_MODEL in CI. The browser sign-in is discontinued

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, Qwen Code or Unstoppable?

Qwen Code scores 72.5 (BB) on agent readiness against Unstoppable's 34.9 (F), and leads in every scored category.

Are Qwen Code and Unstoppable open source?

Qwen Code is open source (Apache-2.0). No open-source release is listed for Unstoppable.

Other comparisons with Qwen Code or Unstoppable

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