CodeGen

CodeGen

Salesforce
+
+

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About

CodeGen is an open-source model for program synthesis. Trained on TPU-v4. Competitive with OpenAI Codex.

About

GPT-5.6 Luna is the fast and affordable model in OpenAI’s GPT-5.6 series, built to bring strong capability to users and developers who need practical intelligence with lower overhead. In the new GPT-5.6 naming system, the number identifies the model generation, while Sol, Terra, and Luna identify durable capability tiers that can advance on their own cadence, giving people and developers clearer choices across intelligence, speed, and cost. Luna sits alongside Sol, the flagship model, and Terra, the balanced model for everyday work, as part of a family designed for broader access to next-generation AI. During the limited preview, GPT-5.6 models are initially available through the API and Codex to a select group of trusted partners and organizations, with plans for broader availability in ChatGPT, Codex, and the API. OpenAI developed GPT-5.6 Sol, Terra, and Luna with its most robust safeguards to date, with configurations matched to each model’s capabilities.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers interested in a large language model for code

Audience

Developers and product teams that need a fast model for everyday AI features, coding support, API workflows, and scalable assistant experiences

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version
Free Trial

Pricing

$1 per 1M tokens (input)
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 4.0 / 5
design 5.0 / 5

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Salesforce
Founded: 1999
United States
github.com/salesforce/CodeGen

Company Information

OpenAI
Founded: 2015
United States
openai.com

Alternatives

T5

T5

Google

Alternatives

Claude Fable 5

Claude Fable 5

Anthropic
StarCoder

StarCoder

BigCode
Claude Mythos 5

Claude Mythos 5

Anthropic
ChatGPT Pro

ChatGPT Pro

OpenAI
Claude Mythos

Claude Mythos

Anthropic
GPT-4.1

GPT-4.1

OpenAI
GPT-5.6 Sol

GPT-5.6 Sol

OpenAI

Categories

Categories

Integrations

Python
.NET
Agentforce Vibes
Amazon Web Services (AWS)
Charlie
ChatGPT
ChatGPT Enterprise
ChatGPT Health
ChatGPT Images
ChatGPT Plus
Dessix
Devin
GPT-5.5-Cyber
GitHub
LaunchLemonade
Microsoft 365 Copilot
Microsoft Foundry
Objective-C
PHP
R

Integrations

Python
.NET
Agentforce Vibes
Amazon Web Services (AWS)
Charlie
ChatGPT
ChatGPT Enterprise
ChatGPT Health
ChatGPT Images
ChatGPT Plus
Dessix
Devin
GPT-5.5-Cyber
GitHub
LaunchLemonade
Microsoft 365 Copilot
Microsoft Foundry
Objective-C
PHP
R
Claim CodeGen and update features and information
Claim CodeGen and update features and information
Claim GPT-5.6 Luna and update features and information
Claim GPT-5.6 Luna and update features and information