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What is GPT-6 Luna?

GPT-6 Luna is OpenAI’s efficiency-focused GPT-6 model for developers and users who need capable reasoning, coding, computer use, and agentic workflows at very low inference cost. It is positioned below GPT-6 Sol and GPT-6 Astra in the model family while bringing many of the GPT-6 generation’s improvements to applications that prioritize scale and affordability. The model supports configurable reasoning effort so developers can allocate additional computation to complex tasks while keeping simpler interactions fast and economical. GPT-6 Luna can power business automation across applications used for sales, marketing, finance, operations, customer support, and human resources. Its coding capabilities support work on real software repositories, including multi-step engineering tasks that require analysis, modification, testing, and iteration. Luna can also operate in computer-use environments, allowing agents to navigate graphical interfaces and complete extended workflows across software applications. OpenAI reports that GPT-6 Luna substantially improves factual reliability compared with GPT-5.6 Luna and can approach the capabilities of more expensive models on some tasks when used at higher reasoning levels. The model also benefits from GPT-6’s improved collaboration style, with clearer technical communication, less unnecessary jargon, and fewer low-value details. Enhanced prompt caching allows applications to reuse previously processed context at a discount while preserving cache reuse when reasoning effort or available tools change. These efficiency improvements make Luna suitable for high-volume agents, coding assistants, automated workflows, customer-facing applications, and other systems where per-request cost is important. GPT-6 Luna is available through the OpenAI API as gpt-6-luna, as well as through ChatGPT Work, Codex, and supported ChatGPT desktop experiences.

What is GPT-5.5 Instant?

The newest version of ChatGPT, known as GPT-5.5 Instant, has been introduced as the standard model, meticulously developed to improve both intelligence and accuracy, resulting in responses that are more straightforward and precise, tailored to the unique needs of each user. This upgrade is crafted for everyday conversations, benefiting millions by enriching interactions with more robust and relevant answers across a diverse range of subjects, all while maintaining a seamless conversational flow and effectively leveraging shared context to create personalized experiences. Furthermore, GPT-5.5 Instant has made significant strides in reliability, showing enhanced factual accuracy in crucial areas such as healthcare, legal matters, and finance, where exactness is essential. The model also showcases increased capability in managing daily tasks, particularly in the areas of processing visual uploads, tackling STEM-related questions, and determining when to utilize web searches for the best results. Each response is not only brief and to the point but also preserves the engaging and enjoyable nature that users have come to appreciate, thereby elevating both satisfaction and the quality of interactions. This model is designed not just to fulfill user expectations but also to consistently surpass them, making every conversation a more enriching experience. Additionally, the advancements in GPT-5.5 Instant reflect a commitment to continuous improvement, ensuring that users can rely on it for an exceptional conversational experience.

Media

Media

Integrations Supported

ChatGPT
ChatGPT Enterprise
ChatGPT Plus
ChatGPT Pro
Amp
Anuma
Astra for Law
Augment Code
Bash
ChatGPT Agent
Codex CLI
EaseMate AI
Flowise
Gemini Enterprise Agent Platform
GitHub Copilot
Go
JetBrains AI Assistant
Microsoft SharePoint
PHP
Perplexity Computer

Integrations Supported

ChatGPT
ChatGPT Enterprise
ChatGPT Plus
ChatGPT Pro
Amp
Anuma
Astra for Law
Augment Code
Bash
ChatGPT Agent
Codex CLI
EaseMate AI
Flowise
Gemini Enterprise Agent Platform
GitHub Copilot
Go
JetBrains AI Assistant
Microsoft SharePoint
PHP
Perplexity Computer

API Availability

Has API

API Availability

Has API

Pricing Information

$0.10 per 1M tokens (input)
Input: $0.10 per 1 million tokens
Output: $0.50 per 1 million tokens
Free Version
Free Trial Offered?

Pricing Information

Pricing not provided
Free Version
Free Trial Offered?

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com/index/gpt-5-5-instant/

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