Audience

Developers, startups, AI agent builders, software teams, businesses, and high-volume applications that need capable coding, reasoning, computer use, and automation at a low operating cost

About GPT-6 Luna

GPT-6 Luna is OpenAI’s cost-efficient GPT-6 model designed for everyday professional work, coding, computer use, and agentic applications at scale. It brings many of the advances introduced with GPT-6 Astra to a faster and substantially lower-cost model while improving on GPT-5.6 Luna in capability and factual reliability. The model supports adjustable reasoning effort, allowing applications to spend more compute on harder tasks and less on simpler requests. GPT-6 Luna can handle software engineering, multi-step business workflows, computer interaction, and other tool-using tasks that benefit from low operating cost. Improved GPT-6 prompt caching helps long-running agents reuse more context, respond faster, and reduce the cost of repeated input. GPT-6 Luna is available in ChatGPT Work, Codex, the ChatGPT desktop app for Free and Go users, and the OpenAI API as gpt-6-luna.

Pricing

Starting Price:
$0.10 per 1M tokens (input)
Pricing Details:
Input: $0.10 per 1 million tokens
Output: $0.50 per 1 million tokens

Integrations

API:
Yes, GPT-6 Luna offers API access
See Integrations

Ratings/Reviews - 1 User Review

Overall 5.0 / 5
More Reviews Write a Review

Company Information

OpenAI
Founded: 2015
United States
openai.com

Videos and Screen Captures

GPT-6 Luna Screenshot 1
GPT-6 Luna Screenshot 1
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Product Details

Platforms Supported
Cloud
Training
Documentation
Support
Online

GPT-6 Luna Frequently Asked Questions

Q: What kinds of users and organization types does GPT-6 Luna work with?
Q: What languages does GPT-6 Luna support in their product?
Q: What kind of support options does GPT-6 Luna offer?
Q: What other applications or services does GPT-6 Luna integrate with?
Q: Does GPT-6 Luna have an API?
Q: What type of training does GPT-6 Luna provide?
Q: How much does GPT-6 Luna cost?

GPT-6 Luna Product Features

GPT-6 Luna Verified User Reviews

Write a Review
  • A GPT-6 Luna User
    Engineer
    Used the software for: Less than 6 months
    Frequency of Use: Daily
    User Role: User, Administrator, Deployment
    Company Size: 500 - 999
    Pricing
    Probability You Would Recommend?
    1 2 3 4 5 6 7 8 9 10

    "Really good for the price"

    Posted 2026-09-23

    Pros: At $0.10 per million input tokens and $0.50 per million output tokens, I can run it across a lot of everyday coding, automation, classification, extraction, and agent steps without constantly thinking about cost. The 1.05M-token context window is almost ridiculous at this price. I can give it large repos, long docs, logs, and plenty of agent history without immediately hitting context limits. I also like that Luna still gets the full tool stack. Web search, files, code execution, shell access, computer use, MCP, and function calling are all supported, so it is not just a stripped-down cheap model.

    Cons: The tradeoff is raw capability. For difficult architecture work, deep debugging, or long-horizon tasks where mistakes are expensive, I would still move up to GPT-6 Sol or Astra.

    Overall: Overall, GPT-6 Luna is an excellent everyday workhorse. It is fast, extremely inexpensive, has huge context, and is capable enough for a massive percentage of the routine AI work I do.

    Read More...
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