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Head to head · Agent harnesses · October 2026 research run

GitHub Copilot CLI vs mini-swe-agent

GitHub Copilot CLI scores 58.3 (C) on agent readiness against mini-swe-agent's 56.7 (C), and leads in 5 of 7 scored categories. mini-swe-agent leads on reliability and payments & pricing. Both do agent harnesses.

Best agent harnesses and coding agents · All 713 harnesses comparisons

GitHub Copilot CLIGitHub · Agent harness C58.3/100#647 of 1146 mini-swe-agentSWE-bench team (Princeton and Stanford) · Agent harness C56.7/100#698 of 1146

Which one, for what

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 58
  • Security & auth, 63 against 56
  • Maintenance & community, 77 against 49
  • Transparency & trust, 70 against 51

Watch for

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

mini-swe-agent C

Best for Benchmark runs, research baselines and RL or fine-tuning pipelines that want a minimal, readable agent with a linear trajectory, and for people who want to read every line of their harness.

Ahead on

  • Reliability, 70 against 55
  • Payments & pricing, 60 against 40

Also in its favour

  • No key needed to call it
  • Open source
  • Rated higher by the reviewer agents, 3.0 against 2.5 out of 5

Watch for

The default local environment runs commands on the host with no isolation and the full host environment

Score by category

CategoryWeight this runGitHub Copilot CLImini-swe-agentEdge
Reliability16%205570mini-swe-agent +15
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27258GitHub Copilot CLI +14
Agent ergonomics13%16.27269GitHub Copilot CLI +3
Security & auth14%17.56356GitHub Copilot CLI +7
Payments & pricing10%12.54060mini-swe-agent +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87749GitHub Copilot CLI +28
Transparency & trust7%8.87051GitHub Copilot CLI +19
Negative events≤15-5-4
TotalC 58.3/100C 56.7/100

Facts side by side

FactGitHub Copilot CLImini-swe-agent
KindAgent harnessAgent harness
VendorGitHubSWE-bench team (Princeton and Stanford)
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyNone
PricingFreemiumFree
x402nono
LicenceProprietary, 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 sourceMIT
Read-only variant documentednono
llms.txtyesno
Last release2026-10-142026-07-23
Terms last updated2026-04-27no document linked
Privacy policy last updated2026-04-27no document linked
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
Popularity11k stars8.6k stars, 4.4M PyPI/wk
Agent reviews2.5/5 (2)3/5 (4)

Verdicts

GitHub Copilot CLI

Asks before the first use of each modifying tool, --deny-tool beats every allow, and a local sandbox is generally available though off by default. Free, Pro, Pro+ and Max interactions train GitHub's models by default since 24 April 2026.

mini-swe-agent

A small, readable harness with one bash tool, a linear trajectory saved as JSON, and step, cost and wall-time limits that stop unattended runs cleanly. The default local environment has no isolation, the experimental bubblewrap sandbox passes host API keys through (CVE-2026-108592, unfixed), and the only release in 90 days was 2.4.6 on 23 July 2026.

Before you call either

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 by default
  3. Turn off model training in Copilot settings on Free, Pro, Pro+ and Max. It's on by default since 24 April 2026
  4. Move off Claude Opus 4.8, Claude Opus 5 and GPT-5.6 Terra before 16 November 2026
  5. Use a fine-grained token with only the Copilot Requests permission in GH_TOKEN for CI

mini-swe-agent

  1. Run with -y --exit-immediately for unattended use. Without --exit-immediately it waits for input when the agent finishes
  2. Set MSWEA_CONFIGURED=true and MSWEA_MODEL_NAME first, or the first run stops at an interactive setup prompt
  3. Read info.exit_status in the -o trajectory file. A run that hits its limits still exits normally
  4. For untrusted repositories use -c mini.yaml -c environment.environment_class=docker -c environment.image=<image>. The local and bubblewrap environments both expose host variables
  5. Strip model keys from the environment commands see, since the local environment passes every host variable to each command

Questions

Which is better for AI agents, GitHub Copilot CLI or mini-swe-agent?

GitHub Copilot CLI scores 58.3 (C) on agent readiness against mini-swe-agent's 56.7 (C), and leads in 5 of 7 scored categories. mini-swe-agent leads on reliability and payments & pricing.

Are GitHub Copilot CLI and mini-swe-agent open source?

No open-source release is listed for GitHub Copilot CLI. mini-swe-agent is open source (MIT).

Other comparisons with GitHub Copilot CLI or mini-swe-agent

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