Agentastic.devAgentastic
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GPT-5.3-CodexOpenAI
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Related Products
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About
Agentastic.dev is a native macOS development workspace for software developers using AI coding agents. It combines an editor, terminal, browser, Git tools, and agent sessions so users can launch multiple coding agents and isolate tasks in Git worktrees or containers. Developers can inspect diffs, run code-review workflows, test applications in the built-in browser, and start work from prompts, specifications, or supported issues and team tools. The product supports a catalog of coding-agent command-line tools and allows custom terminal-based agents. Work can run locally, on SSH-accessible development machines, or in supported cloud environments. An iPhone companion lets users monitor sessions and respond when agents need input. The macOS app is free; subscriptions and API usage for third-party agents are paid to those providers.
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About
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, designed to handle complex professional work on a computer. It combines frontier-level coding performance with advanced reasoning and real-world task execution. The model is faster than previous Codex versions and can manage long-running tasks involving research, tools, and deployment. GPT-5.3-Codex supports real-time interaction, allowing users to steer progress without losing context. It excels at software engineering, web development, and terminal-based workflows. Beyond code generation, it assists with debugging, documentation, testing, and analysis. GPT-5.3-Codex acts as an interactive collaborator rather than a single-turn coding tool.
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Platforms Supported
Windows
Not Supported
Mac
Supported
Linux
Supported
Cloud
Not Supported
On-Premises
Not Supported
iPhone
Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Software developers and engineering teams who want to run, coordinate, and review AI coding agents across development tasks.
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Audience
GPT-5.3-Codex is built for software engineers, product teams, researchers, and technical professionals who need an interactive AI agent capable of executing complex, end-to-end computer-based work
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Not Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$0
The macOS app is free to download and use. Third-party coding-agent subscriptions and API usage are billed by their respective providers.
Free Version
Supported
Free Trial
Not Supported
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Pricing
No information available.
Free Version
Not Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Not Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationAgentastic
www.agentastic.dev/
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Company InformationOpenAI
Founded: 2015
United States
openai.com
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Categories |
Categories |
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Integrations
GitHub
Supported
C
Not Supported
ChatGPT Plus
Not Supported
Cheaper Inference
Not Supported
Codex CLI
Not Supported
Devin Desktop
Not Supported
HTML
Not Supported
Java
Not Supported
JetBrains Junie
Not Supported
Julia
Not Supported
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Integrations
GitHub
Supported
C
Supported
ChatGPT Plus
Supported
Cheaper Inference
Supported
Codex CLI
Supported
Devin Desktop
Supported
HTML
Supported
Java
Supported
JetBrains Junie
Supported
Julia
Supported
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