GPT-6 Luna
- Score
- 27.9 · rank 22
- Price
- Paid
- API
- Yes
- Weights
- No
WHAT IT DOES
GPT-6 Luna is OpenAI's September 22, 2026 update to GPT-5.6 Luna, priced at $0.10 per million input tokens and $0.50 per million output, down from $0.20/$1.20. It is positioned for high-volume, tightly-defined tasks with a clear goal: summarizing documents, extracting information, and answering straightforward questions, rather than open-ended reasoning or coding. Independent testing on the DeepSWE v1.1 benchmark found Luna matches GPT-6 Sol's maximum-effort score for just $0.22 per task.
WHY WE PICKED IT
At $0.10/$0.50 per million tokens it is priced for workloads where cost per call is the entire decision, and matching Sol's benchmark score at a fraction of Sol's price on at least one measured task makes it worth trying before defaulting to a more expensive tier for simple, high-volume work.
QUICK FACTS
STRENGTHS
- ✓50%+ cheaper than GPT-5.6 Luna on output tokens
- ✓Matches GPT-6 Sol's maximum-effort DeepSWE v1.1 score for $0.22 per task in independent testing
- ✓Purpose-built for the highest-volume, lowest-complexity tier of work
- ✓Permanent, confirmed pricing rather than a promotional rate
LIMITATIONS
- ⚠Not designed for complex reasoning or frontier coding work
- ⚠Lower capability ceiling than Sol by design
- ⚠Best suited to narrow, well-defined tasks rather than open-ended work
GETTING STARTED
Access via the OpenAI API at model id gpt-6-luna, or through ChatGPT. Use it for the simple, high-volume slice of your workload and route anything requiring real reasoning or coding depth to GPT-6 Sol instead.
BENCHMARKS
SIMILAR TOOLS
PRICING
Requires a paid subscription.
FEATURED IN GUIDES
When to Download Mistral Large 4
Mistral published the weights for Large 4, nicknamed Le Chonk, on October 29. What the licence allow...
Who Can Use Gemini 4 Carbon
Google announced Gemini 4 Carbon on October 28 for a small set of cyber defenders. Who has access, w...
When to Use GPT-6.1 Terra
OpenAI priced GPT-6.1 Terra at $1 per million input tokens for computer use and everyday writing. Ho...
Frontier Training Without the Live Web
OpenAI says frontier training will use cached and simulated web content, after a model reached the l...
Open Models: What They Cannot Do
The benchmark gap has largely closed: open models now score within a point of the closed frontier on...
EXPLORE ALTERNATIVES
Compare GPT-6 Luna with 5+ similar llms AI tools.
FREQUENTLY ASKED QUESTIONS
Is GPT-6 Luna free?
No, GPT-6 Luna requires a paid subscription.
Does GPT-6 Luna have an API?
Yes, GPT-6 Luna offers an API for programmatic integration.
What is GPT-6 Luna best for?
GPT-6 Luna is best for High-Volume Clerical Tasks. GPT-6 Luna is OpenAI's September 22, 2026 update to GPT-5. At $0.10/$0.50 per million tokens it is priced for workloads where cost per call is the entire decision, and matching Sol's benchmark score at a fraction of Sol's price on at least one measured task makes it worth trying before defaulting to a more expensive tier for simple, high-volume work.
What platforms does GPT-6 Luna support?
GPT-6 Luna supports web, api, mobile.
Is GPT-6 Luna open source?
No, GPT-6 Luna is not open source.
How do I get started with GPT-6 Luna?
Access via the OpenAI API at model id gpt-6-luna, or through ChatGPT. Use it for the simple, high-volume slice of your workload and route anything requiring real reasoning or coding depth to GPT-6 Sol instead.
How do I use GPT-6 Luna?
GPT-6 Luna is a large language model for text generation, analysis, and conversation. Access through the web interface. Enter prompts or questions to get responses. It excels at 50%+ cheaper than gpt-5.6 luna on output tokens.
FEATURED ON CURATEDAI
Work on GPT-6 Luna? You're hand-reviewed in our directory. Add this badge to your site — it links back to this profile.