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features
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Description

CodeGen is an open-source framework designed for generating code through program synthesis, utilizing TPU-v4 for its training. It stands out as a strong contender against OpenAI Codex in the realm of code generation solutions.

Description

GPT-5.1-Codex is an advanced iteration of the GPT-5.1 model specifically designed for software development and coding tasks that require autonomy. The model excels in both interactive coding sessions and sustained, independent execution of intricate engineering projects, which include tasks like constructing applications from the ground up, enhancing features, troubleshooting, conducting extensive code refactoring, and reviewing code. It effectively utilizes various tools, seamlessly integrates into developer environments, and adjusts its reasoning capacity based on task complexity, quickly addressing simpler challenges while dedicating more resources to intricate ones. Users report that GPT-5.1-Codex generates cleaner, higher-quality code than its general counterparts, showcasing a closer alignment with developer requirements and a reduction in inaccuracies. Additionally, the model is accessible through the Responses API route instead of the conventional chat API, offering different configurations such as a “mini” version for budget-conscious users and a “max” variant that provides the most robust capabilities. Overall, this specialized version aims to enhance productivity and efficiency in software engineering practices.

API Access

Has API No 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

Python Yes 
C No 
C# No 
ChatGPT No 
ChatGPT Pro No 
Codex Security No 
Devin Desktop No 
Elixir No 
F# No 
Forefront Yes 
GPT-6 Sol No 
GitHub No 
HTML No 
JavaScript No 
Julia No 
Microsoft Foundry No 
OpenAI Codex No 
R No 
Shiori No 
Visual Studio Code No 

Integrations

Python Yes 
C Yes 
C# Yes 
ChatGPT Yes 
ChatGPT Pro Yes 
Codex Security Yes 
Devin Desktop Yes 
Elixir Yes 
F# Yes 
Forefront No 
GPT-6 Sol Yes 
GitHub Yes 
HTML Yes 
JavaScript Yes 
Julia Yes 
Microsoft Foundry Yes 
OpenAI Codex Yes 
R Yes 
Shiori Yes 
Visual Studio Code Yes 

Pricing Details

Free
Open source
Free Trial No 
Free Version Yes 

Pricing Details

$1.25 per input
Free Trial No 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises Yes 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Salesforce

Founded

1999

Country

United States

Website

github.com/salesforce/CodeGen

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

platform.openai.com/docs/models/gpt-5.1-codex

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