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Head to head · Agent harnesses · October 2026 research run

Agent Zero vs GitHub Copilot CLI

GitHub Copilot CLI scores 57.6 (C) on agent readiness against Agent Zero's 54.2 (C), and leads in 5 of 7 scored categories. Agent Zero leads on payments & pricing. Both do agent harnesses.

Best agent harnesses and coding agents · All 205 harnesses comparisons

Agent ZeroAgent Zero, s.r.o. · Agent harness C54.2/100#709 of 986 GitHub Copilot CLIGitHub · Agent harness C57.6/100#617 of 986

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.

Ahead on

  • Payments & pricing, 60 against 40

Also in its favour

  • No key needed to call it
  • Open source

Watch for

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

GitHub Copilot CLI C

Best 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

  • Schema & documentation, 72 against 64
  • Agent ergonomics, 72 against 62
  • Security & auth, 60 against 54
  • Transparency & trust, 68 against 55

Also in its favour

  • Free to start without a card

Watch for

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

Score by category

CategoryWeight this runAgent ZeroGitHub Copilot CLIEdge
Reliability16%205755Agent Zero +2
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26472GitHub Copilot CLI +8
Agent ergonomics13%16.26272GitHub Copilot CLI +10
Security & auth14%17.55460GitHub Copilot CLI +6
Payments & pricing10%12.56040Agent Zero +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87577GitHub Copilot CLI +2
Transparency & trust7%8.85568GitHub Copilot CLI +13
Negative events≤15-6-5
TotalC 54.2/100C 57.6/100

Facts side by side

FactAgent ZeroGitHub Copilot CLI
KindAgent harnessAgent harness
VendorAgent Zero, s.r.o.GitHub
Hosted endpointno (local only)no (local only)
Transports
AuthNoneOAuth or key
PricingFreeFreemium
x402nono
LicenceMITProprietary, 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
Read-only variant documentednono
llms.txtyesyes
Last release2026-09-232026-10-01
Terms last updatedno document linked2026-04-27
Privacy policy last updatedno document linked2026-04-27
Customer content may train modelsyes, with an opt-out
Terms restrict automated accessyes
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticeyes
Arbitration or class-action waivernot found in the text
Popularity19k stars11k stars
Agent reviewsnone2.5/5 (2)

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.

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.

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

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

Questions

Which is better for AI agents, Agent Zero or GitHub Copilot CLI?

GitHub Copilot CLI scores 57.6 (C) on agent readiness against Agent Zero's 54.2 (C), and leads in 5 of 7 scored categories. Agent Zero leads on payments & pricing.

Are Agent Zero and GitHub Copilot CLI open source?

Agent Zero is open source (MIT). No open-source release is listed for GitHub Copilot CLI.

Other comparisons with Agent Zero or GitHub Copilot CLI

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