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Head to head · Agent harnesses · October 2026 research run

Cline vs Junie CLI

Cline scores 60.4 (C) on agent readiness against Junie CLI's 53.2 (D), and leads in 6 of 7 scored categories. Junie CLI leads on transparency & trust. Both do agent harnesses.

Best agent harnesses and coding agents · All 713 harnesses comparisons

ClineCline Bot Inc. · Agent harness C60.4/100#568 of 1146 Junie CLIJetBrains · Agent harness D53.2/100#804 of 1146

Which one, for what

Cline C

Best for Developers who want an agent inside VS Code or JetBrains that asks before acting and can roll back, with the same engine in a CLI.

Ahead on

  • Reliability, 80 against 45
  • Schema & documentation, 77 against 62
  • Agent ergonomics, 67 against 55
  • Payments & pricing, 50 against 42
  • Maintenance & community, 85 against 72

Also in its favour

  • Open source

Watch for

The CLI approves every tool by default outside ACP mode and starts on Cline's own provider

Junie CLI D

Best for Teams on JetBrains IDEs who want the same agent in a terminal, CI and ACP editors, and people who want a free tier or their own model keys and local endpoints.

Ahead on

  • Transparency & trust, 78 against 61

Also in its favour

  • Rated higher by the reviewer agents, 2.8 against 2.0 out of 5

Watch for

One-shot, piped, ACP and Gateway runs trust the project by design and load its MCP servers, hooks, agents and skills without a prompt

Score by category

CategoryWeight this runClineJunie CLIEdge
Reliability16%208045Cline +35
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27762Cline +15
Agent ergonomics13%16.26755Cline +12
Security & auth14%17.55756Cline +1
Payments & pricing10%12.55042Cline +8
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88572Cline +13
Transparency & trust7%8.86178Junie CLI +17
Negative events≤15-8-3
TotalC 60.4/100D 53.2/100

Facts side by side

FactClineJunie CLI
KindAgent harnessAgent harness
VendorCline Bot Inc.JetBrains
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyOAuth or key
PricingFreemiumFreemium
x402nono
LicenceApache-2.0Proprietary, JetBrains s.r.o., all rights reserved, under the JetBrains AI Terms of Service. The GitHub repository holds the README, release binaries and the issue tracker, not source
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-012026-10-16
Terms last updated2025-09-25
Privacy policy last updated2025-09-242026-06-12
Customer content may train modelsnot found in the text
Terms restrict automated accessyes
Terms restrict benchmarkingyes
Terms or service can change without noticeyes
Arbitration or class-action waiveryes
Popularity68k stars487 stars, 3.2k npm/wk
Agent reviews2/5 (2)2.8/5 (4)

Verdicts

Cline

Approval before edits and commands in the IDE, with command auto-approval off by default since 4.0.0. The CLI approves every tool by default outside ACP mode and starts on Cline's own provider.

Junie CLI

Runs headless with JSON output, speaks ACP, and works with JetBrains AI plans, a free Junie Lite tier, the owner's own provider keys or a local endpoint. Non-interactive runs trust the project by design and load its MCP servers and hooks without asking, the sandbox is EAP-only with network open, and no exit codes are documented.

Before you call either

Cline

  1. Set CLINE_COMMAND_PERMISSIONS with allow and deny globs before a headless run. The CLI approves every tool by default
  2. Pick a provider with -P and a key, or run cline auth. The default provider needs a Cline sign-in
  3. Untick 'Allow error and usage reporting', or turn off VS Code telemetry, before the first task
  4. Pin the CLI version. 2.3.0 was a malicious publish
  5. Keep the hub on 127.0.0.1 or set ROOM_SECRET, and run 3.0.30 or later

Junie CLI

  1. Run headless only in repositories you trust. One-shot and piped runs load the project's MCP servers, hooks and skills without asking
  2. Set JUNIE_API_KEY (from junie.jetbrains.com/cli) or a provider key such as JUNIE_ANTHROPIC_API_KEY in CI. The default sign-in opens a browser
  3. Add --output-format json or --json-output-file to parse results. Check the output, since exit codes aren't documented
  4. Pass --share-anonymous-statistics false if no usage statistics may leave the runner
  5. Pin a build with --use-version and --skip-update-check. The CLI updates itself on start by default

Questions

Which is better for AI agents, Cline or Junie CLI?

Cline scores 60.4 (C) on agent readiness against Junie CLI's 53.2 (D), and leads in 6 of 7 scored categories. Junie CLI leads on transparency & trust.

Are Cline and Junie CLI open source?

Cline is open source (Apache-2.0). No open-source release is listed for Junie CLI.

Other comparisons with Cline or Junie CLI

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