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Coding agent directory

AI harnesses compared

31 coding agents from 27 vendors, from terminal tools to cloud agents. Every profile lists its sources.
harnesses
31
open source
16
for the terminal
26

Popularity

How often each harness is searched for, used and mentioned, as an index from 0 to 100.

The most popular AI harnesses

Popularity index from 0 to 100, higher is more popular.

20 of 31 models

Claude Code91
Cursor83
Google Antigravity81
Zed81
Codex CLI81
GitHub Copilot75
Devin73
OpenCode72
Codex app72
Pi69
Gemini CLI68
Devin Desktop (formerly Windsurf)65
Kilo Code65
Cline64
Qwen Code62
Muse Code59
Amp58
Aider58
Continue54
Grok Build52

As of November 7, 2026 · Source: gradually.ai popularity index

What is gaining popularity right now, across models, vendors, harnesses and AI subscriptions, is collected in All AI trends.

Trending harnesses

Harnesses whose popularity score is clearly higher than four weeks ago.As of Nov 7
All AI trends
1ZedPopularity +12.8 points since Sep 30Rising fast
2Muse CodePopularity +10.2 points since Sep 30Rising fast
3ContinuePopularity +5.2 points since Sep 30Rising

All AI harnesses

Search, filter by form, status and license, and sort. The form filters count every form of a harness, not just the primary one.
31 of 31 harnesses
Claude CodeAnthropic
Form
Terminal (CLI)
Status
Available
Launched
February 24, 2025
Open source
No
Popularity
91
Entry price
From $20/month with Pro plan ($17 billed annually)
CursorAnysphere
Form
Editor
Status
Available
Launched
March 2023
Open source
n/a
Popularity
83
Entry price
From $8/month with Plus plan (free tier available)
Google AntigravityGoogle
Form
Editor
Status
Available
Launched
November 18, 2025
Open source
n/a
Popularity
81
Entry price
Free for individuals
ZedZed Industries
Form
Editor
Status
Available
Launched
March 15, 2023
Open source
Yes, GPL-3.0-or-later
Popularity
81
Entry price
From $10/month with Pro plan (free with your own API key)
Codex CLIOpenAI
Form
Terminal (CLI)
Status
Available
Launched
April 16, 2025
Open source
Yes, Apache-2.0
Popularity
81
Entry price
From $8/month with Go plan (or API key, usage-based)
GitHub CopilotGitHub
Form
IDE extension
Status
Available
Launched
February 6, 2025
Open source
n/a
Popularity
75
Entry price
From $10/month with Pro plan (free tier available)
DevinCognition
Form
Cloud agent
Status
Available
Launched
March 12, 2024
Open source
n/a
Popularity
73
Entry price
From $20/month with Pro plan (free tier available)
OpenCodeAnomaly
Form
Terminal (CLI)
Status
Available
Launched
May 2025
Open source
Yes, MIT
Popularity
72
Entry price
Free, own API key or free models; Go plan from $10/month
Codex appOpenAI
Form
Desktop app
Status
Available
Launched
February 2, 2026
Open source
n/a
Popularity
72
Entry price
Free tier available, from $8/month with Go plan
PiEarendil Inc.
Form
Terminal (CLI)
Status
Available
Launched
November 2025
Open source
Yes, MIT
Popularity
69
Entry price
Free (MIT), models via your own subscription or API key
Gemini CLIGoogle
Form
Terminal (CLI)
Status
Available
Launched
June 25, 2025
Open source
Yes, Apache-2.0
Popularity
68
Entry price
Only with Code Assist enterprise license or own API key (usage-based)
Devin Desktop (formerly Windsurf)Cognition
Form
Editor
Status
Available
Launched
November 13, 2024
Open source
n/a
Popularity
65
Entry price
From $20/month with Pro plan (free tier available)
Kilo CodeKilo Code
Form
IDE extension
Status
Available
Launched
March 7, 2025
Open source
Yes, MIT
Popularity
65
Entry price
Free; usage at provider rates with no markup or your own API key; Teams $15/user/month
ClineCline Bot Inc.
Form
IDE extension
Status
Available
Launched
July 10, 2024
Open source
Yes, Apache-2.0
Popularity
64
Entry price
Free for individual developers; pay only for model inference (own API key or at cost)
Qwen CodeAlibaba
Form
Terminal (CLI)
Status
Available
Launched
July 22, 2025
Open source
Yes, Apache-2.0
Popularity
62
Entry price
Free, bring your own API key

Benchmarks

How harness and model perform together. Every value belongs to the stated combination of harness, model and reasoning level, not to the harness alone.
Terminal-Bench 4.0Tasks in reproducible terminal environments. The agent, its tools and the reasoning level are part of the result.
Claude CodeClaude Opus 5.5 · max64.9%
Claude CodeClaude Sonnet 5.5 · max61.8%
Codex CLIGPT-6.1 Sol · max58.2%
Claude CodeClaude Fable 5.1 · max57.9%
Claude CodeClaude Opus 5 · max51.8%
Claude CodeClaude Fable 5 · max44.6%
Codex CLIGPT-5.6 Sol · max37.3%
Claude CodeClaude Opus 4.8 · max23.6%
Codex CLIGPT-5.6 Terra · max21.5%
Grok BuildGrok 4.6 · high20.3%
Muse CodeMuse Spark 1.3 · xhigh14.6%
Claude CodeClaude Sonnet 5 · max12.4%

Source: Terminal-Bench, retrieved October 15, 2026

SWE-bench Verified500 validated tasks from real GitHub issues. It measures the model with its harness and tools.
Claude CodeClaude Opus 4.885.8%
CursorComposer 2.579.6%
Codex CLIGPT-5.576.4%
Factory DroidGPT-5.576.2%

Source: Vals AI, retrieved November 6, 2026

Vibe Code Bench v1.1Can the agent build a web application from scratch? The finished application is scored.
Claude CodeClaude Opus 4.877.5%
Factory DroidGPT-5.567.4%
Codex CLIGPT-5.558.2%
Claude CodeClaude Sonnet 4.655.8%
CursorComposer 2.549.6%
Codex CLIGPT-5.448.5%
Grok BuildGrok Build 0.113.3%
DevinSWE-1.6 Fast7.2%

Source: Vals AI, retrieved November 6, 2026

SWE-Marathon v1.1Long software tasks over many hours, checked with the project's own tests.
Muse CodeMuse Wonder Full · max53.1%
Muse CodeMuse Wonder · max52.5%
Claude CodeClaude Sonnet 5.5 · max51.3%
Claude CodeKimi K3 · max48.1%
Claude CodeClaude Opus 5.5 · max46.3%
Claude CodeClaude Fable 5.1 · max45.6%
OpenCodeGemini 3.7 Flash · max22.5%

Source: SWE-Marathon, retrieved October 15, 2026

SWE-Marathon v1.020 multi-hour repository tasks, solved or not solved (pass@1).
Grok BuildGrok 4.529.0%
Claude CodeClaude Opus 4.826.0%
Claude CodeClaude Fable 524.0%
Claude CodeClaude Opus 4.716.0%
Codex CLIGPT-5.512.0%
Gemini CLIGemini 3.5 Flash7.0%

Source: SWE-Marathon, retrieved August 9, 2026

TUA-Bench120 real terminal tasks covering documents, email, web research and technical work (pass@1).
Claude CodeClaude Opus 4.8 · max58.8%
Codex CLIGPT-5.5 · xhigh57.7%

Source: TUA-Bench, retrieved August 9, 2026

CUA-benchSix video games played with only a keyboard and a mouse. Half of them are held out.
Codex CLIGPT-6 Astra · max19.2%
Claude CodeClaude Opus 5.5 · max14.0%
Claude CodeClaude Fable 5.1 · max13.2%
Claude CodeClaude Opus 5 · max9.0%
Codex CLIGPT-5.6 Sol · max8.3%
Muse CodeMuse Wonder · max7.2%
Muse CodeMuse Spark 1.3 · max5.8%
Google AntigravityGemini 4 Argon · high4.8%

Source: Vals AI, retrieved November 6, 2026

Robo-benchControlling a robot arm and a humanoid in a physics simulation, from motor commands and camera images alone.
Codex CLIGPT-6.1 Sol · max28.3%
Codex CLIGPT-6 Astra · max23.3%
Claude CodeClaude Opus 5.5 · max14.6%
Muse CodeMuse Wonder Full · max10.4%
Claude CodeClaude Fable 5.1 · max5.8%
Google AntigravityGemini 4 Argon · high0.8%
Grok BuildGrok 4.7 · xhigh0.2%

Source: Vals AI, retrieved November 6, 2026

Development compared

How actively each harness is developed, how well it is maintained and how widely it is installed. Repository values exist for open-source harnesses only; release, package and security values cover closed CLIs too.
23 of 23 harnesses
Main language

Activity

Commits, merged pull requests and closed issues of the last 30 days, releases of the last 90 days. GitHub does not publish line counts; code size is the size of the source code per GitHub's language statistics.

Oh My Pi (OMP)TypeScript8,0451,456496122November 2, 2026109.7 MB
CodebuffTypeScript2,221151363September 8, 202615.9 MB
OpenCodeTypeScript2,0742,0036,31926October 28, 202661.9 MB
Qwen CodeTypeScript1,4911,52872738November 5, 2026212.3 MB
Codex CLIRust1,2521,3201,16934October 29, 202685.7 MB
Kilo CodeTypeScript93147318451November 5, 202651.9 MB
PiTypeScript77120692322November 2, 202627.5 MB
ZedRust40647142222November 4, 202667.1 MB
ClineTypeScript21822015622October 26, 202631.9 MB
gooseRust14515020013October 28, 202615.1 MB
WarpRust133141330June 3, 202669.3 MB
Gemini CLITypeScript11712618613November 4, 202623.3 MB
Mistral VibePython9118820November 4, 202623.1 MB
AiderPython00680February 12, 20261.7 MB
ContinueTypeScript00430June 18, 202610.6 MB
Roo CodearchivedTypeScript0000May 15, 202612.1 MB
Ampn/an/an/an/a690continuous buildsNovember 5, 2026n/a
Augment Coden/an/an/an/a2November 4, 2026n/a
Claude Coden/an/an/an/a81November 3, 2026n/a
Factory Droidn/an/an/an/a83November 5, 2026n/a
GitHub Copilotn/an/an/an/a26October 28, 2026n/a
Julesn/an/an/an/a0December 16, 2025n/a
Junien/an/an/an/a0April 27, 2026n/a

Maintenance and community

Median time to merge and to close, measured on up to 100 most recently updated cases of the last 30 days. “Most active person” is that person's share of the latest human commits. “Commits with an AI agent” counts only commits that name an AI agent as author or co-author; unmarked AI help stays invisible.

Zed30.5 h100.5 days56%2,38312%4%
Kilo Code2.5 h47.9 h32%1,27353%0%
OpenCode19 min24 h16%1,08664%2%
Oh My Pi (OMP)15.2 h15.5 h91%1,03243%0%
Codex CLIn/a24.8 hn/a71116%0%
Gemini CLI20.6 h75.3 days88%70313%0%
goose2.3 days8.5 days40%67924%7%
Qwen Code7.2 h3.2 days8%63730%7%
Continuen/a112.7 daysn/a507n/an/a
Cline45.6 h121.9 days86%35243%6%
Pi1.4 hunder 1 min83%31743%0%
Roo Codearchivedn/an/an/a303n/an/a
Aidern/a5.6 hn/a182n/an/a
Warp24.1 h6.2 days71%17221%1%
Codebuff16.2 h38.3 days100%36n/a0%
Mistral Vibe1.7 h7.0 days100%1540%0%

Packages and security

Downloads of the last 7 days, size and direct dependencies of the current version (for launchers with a separate program package, including the Linux x64 package), and known vulnerabilities per the OSV database. VS Code installs count since the extension was published.

Codex CLI26,519,56816,434,678n/a00ever reported: 2
Claude Code13,308,86129,576,581338.0 MBwith Linux x64 package00ever reported: 29
Pi5,945,182n/a24.0 MB220ever reported: 4
OpenCode4,292,6091,310,335214.4 MBwith Linux x64 package00ever reported: 2
GitHub Copilot1,887,42774,865,825198.5 MBwith Linux x64 package10ever reported: 2
Gemini CLI477,8751,139,96199.1 MBwith Linux x64 package00ever reported: 1
Mistral Vibe318,75755,02838.4 MB940ever reported: 0
Oh My Pi (OMP)224,899n/a46.7 MB250ever reported: 0
Qwen Code137,629n/a263.3 MBwith Linux x64 package00ever reported: 0
Cline97,1495,844,204161.8 MBwith Linux x64 package50ever reported: 4
Aider70,343n/a377.0 KB1084ever reported: 4
Kilo Code56,0411,700,851326.7 MBwith Linux x64 package00ever reported: 1
Amp43,869n/a155.2 MBwith Linux x64 package00ever reported: 0
Augment Code39,407784,26713.4 MB00ever reported: 0
Factory Droid10,30140,451338.8 MBwith Linux x64 package00ever reported: 0
Continue6,5524,504,18465.1 MBwith Linux x64 package40ever reported: 0
Jules2,240n/a19.6 KB10ever reported: 0
Codebuff1,022n/a64.4 KB10ever reported: 0
Junie495n/a17.1 KB10ever reported: 0
goosen/a7,917n/an/an/a
Roo Codearchivedn/a2,120,774n/an/an/a

Sources: the GitHub API, npm, PyPI and pypistats, the VS Code Marketplace, GitHub Releases and OSV. Only stable versions count as releases. Closed-source harnesses have no public repository. As of November 5, 2026.

Release notes of many harnesses are collected in the AI tool changelogs.

Frequently asked questions about AI harnesses

A harness is the software around a language model that turns it into a coding agent. It gives the model the tools to read files, change code and run commands. The directory covers harnesses for the terminal, code editors, IDE extensions, desktop apps and cloud agents.

The directory lists 31 harnesses. By primary form, there are 15 for the terminal, 5 editors, 7 IDE extensions, 2 desktop apps and 2 cloud agents. Many of them are also available in other forms.

In the gradually.ai popularity index, Claude Code leads with 91 out of 100 points, followed by Cursor (83) and Google Antigravity (81).

According to their sources, 16 harnesses are open source, namely Aider (Apache-2.0), Cline (Apache-2.0), Codebuff (Apache-2.0), Codex CLI (Apache-2.0), Continue (Apache-2.0), Gemini CLI (Apache-2.0), goose (Apache-2.0), Kilo Code (MIT), Mistral Vibe (Apache-2.0), Oh My Pi (OMP) (MIT), OpenCode (MIT), Pi (MIT), Qwen Code (Apache-2.0), Roo Code (Apache-2.0), Warp (AGPL-3.0) and Zed (GPL-3.0-or-later).

According to their vendors, Aider, Amp, Cline, Factory Droid, goose, Junie, Kilo Code, Mistral Vibe, Oh My Pi (OMP), OpenCode, Pi, Qwen Code, Warp and Zed work with your own API key. For the other harnesses this is not documented or not offered.

26 harnesses offer a command line, namely Aider, Amp, Augment Code, Claude Code, Cline, Codebuff, Codex CLI, Continue, Devin, Factory Droid, Gemini CLI, GitHub Copilot, Google Antigravity, goose, Grok Build, Jules, Junie, Kilo Code, Kiro, Mistral Vibe, Muse Code, Oh My Pi (OMP), OpenCode, Pi, Qwen Code and Warp.

Continue and Roo Code have been discontinued. The profiles stay in the directory so you can look up the last known facts.