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Average Ratings 0 Ratings

Total
ease
features
design
support

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Write a Review

Description

GPT-5.3-Codex is a next-generation AI agent built to expand Codex beyond code writing into full-spectrum professional execution. It unifies advanced coding intelligence with reasoning, planning, and computer-use capabilities. The model delivers faster performance while handling more complex workflows across development environments. GPT-5.3-Codex can autonomously iterate on large projects while remaining interactive and steerable. It supports tasks such as debugging, deployment, performance optimization, and system monitoring. The model demonstrates state-of-the-art results across real-world coding benchmarks. It also excels at web development, generating production-ready applications from minimal prompts. GPT-5.3-Codex understands intent more effectively, producing stronger default designs and functionality. Its agentic nature allows it to operate like a collaborative teammate. This makes it suitable for both individual developers and large teams.

Description

Keelen operates as an independent coding loop designed to transform open-ended requests into a structured and prioritized roadmap. It then subdivides items from this roadmap into development-ready tasks complete with acceptance criteria, executing each task in a secure, isolated VM environment using your designated credentials from Claude, Codex, GLM, or Kimi, ultimately producing a merged pull request or retaining it for review based on your settings. Every modification undergoes a series of five verification checkpoints prior to merging: an initial red-first test proof, a separate adversarial review of the changes by a model that lacks context from the preceding run, the execution of the project’s own test suite on a fresh checkout, a CI-green mandate, and a designated review period before automated merging is allowed. Importantly, the process is structured to ensure that no checks are compromised to achieve a green status. Each iteration is conducted in a temporary, non-root VM that is eliminated at the conclusion of the run, featuring a deny-by-default policy on network access. Additionally, the GitHub tokens utilized for each run are limited in scope to a single repository. It's essential to note that Keelen does not function as an IDE copilot nor as a chat interface; its capabilities are distinctly designed to automate and streamline the coding workflow.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

No images available

Integrations

Buda
C#
ChatGPT Plus
Codex CLI
Codex Security
Cursor
F#
Go
HTML
Java
JavaScript
JetBrains Junie
Laravel
OpenAI Codex
OpenClaw
PHP
Python
R
Scala
Verdent

Integrations

Buda
C#
ChatGPT Plus
Codex CLI
Codex Security
Cursor
F#
Go
HTML
Java
JavaScript
JetBrains Junie
Laravel
OpenAI Codex
OpenClaw
PHP
Python
R
Scala
Verdent

Pricing Details

No price information available.
Free Trial
Free Version

Pricing Details

$29/month
Free Trial
Free Version

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

openai.com

Vendor Details

Company Name

Keelen

Founded

2026

Country

United States

Website

keelen.ai/

Product Features

Alternatives

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Alternatives

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