Head to head · Agent harnesses · October 2026 research run

Agent Zero vs Qwen Code

Qwen Code scores 72.4 (BB) on agent readiness against Agent Zero's 54.2 (C), and leads in 5 of 7 scored categories. Both do agent harnesses.

Best agent harnesses and coding agents · All 205 harnesses comparisons

Which one, for what

Agent Zero C

Best for A technical owner who wants an agent with its own Linux machine, reachable from Telegram, WhatsApp or email, with scheduled tasks and editable memory.

Also in its favour

  • No key needed to call it

Watch for

No approval step before shell commands, file changes or outgoing messages. Tool Access defaults to allow

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 57
  • Schema & documentation, 91 against 64
  • Agent ergonomics, 85 against 62
  • Maintenance & community, 88 against 75
  • Transparency & trust, 63 against 55

Also in its favour

  • Agent-ready, a grade of BB or better
  • Free to start without a card
  • No incidents deducted, where Agent Zero loses 6 points for them

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

Score by category

CategoryWeight this runAgent ZeroQwen CodeEdge
Reliability16%205769Qwen Code +12
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26491Qwen Code +27
Agent ergonomics13%16.26285Qwen Code +23
Security & auth14%17.55453Agent Zero +1
Payments & pricing10%12.56060even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87588Qwen Code +13
Transparency & trust7%8.85563Qwen Code +8
Negative events≤15-60
TotalC 54.2/100BB 72.4/100

Facts side by side

FactAgent ZeroQwen Code
KindAgent harnessAgent harness
VendorAgent Zero, s.r.o.Alibaba (Qwen team)
Hosted endpointno (local only)no (local only)
Transports
AuthNoneAPI key
PricingFreeFree
x402nono
LicenceMITApache-2.0
Read-only variant documentednono
llms.txtyesyes
Last release2026-09-232026-10-05
Terms last updatedno document linked2026-10-01
Privacy policy last updatedno document linked2026-10-01
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
Popularity19k stars28k stars, 105k npm/wk

Verdicts

Agent Zero

Self-hosted under the MIT licence, with nine releases in the 90 days to 12 October 2026 and breaking changes listed in the release notes. The agent runs shell commands in its container with no approval step, the web interface has no login by default, and five CVEs from the past year have no published GitHub advisory.

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.

Before you call either

Agent Zero

  1. Set a UI login and password in Settings before publishing the port or opening a tunnel. The default has none
  2. Fill allowed_users, allowed_numbers or sender_whitelist before enabling a channel. An empty list accepts every sender
  3. Enable the Infection Check plugin when the agent reads mail, web pages or MCP results. It ships disabled
  4. Run v2.12 or later. It fixes a Telegram webhook authentication bypass and a WhatsApp media path traversal
  5. Call POST /api_message with the X-API-KEY header. The token changes when the UI login or password changes

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

Questions

Which is better for AI agents, Agent Zero or Qwen Code?

Qwen Code scores 72.4 (BB) on agent readiness against Agent Zero's 54.2 (C), and leads in 5 of 7 scored categories.

Are Agent Zero and Qwen Code open source?

Yes. Agent Zero is open source (MIT). Qwen Code is open source (Apache-2.0).

Other comparisons with Agent Zero or Qwen Code

Machine-readable

For companies

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