Unofficial page — not affiliated with or endorsed by OpenAI. Chat answers are AI-generated and may be wrong.
OpenAI · Available now
GPT-6 Luna (2026): OpenAI’s low-cost GPT-6 model
GPT-6 Luna is the model OpenAI calls its most efficient for focused, high-volume tasks, priced at $0.10 per million input and $0.50 per million output tokens, with a 1,050,000-token context.
- Maker
- OpenAI
- Type
- Text
- Released
- No date given
- OpenRouter id
- openai/gpt-6-luna
Per million tokens
Price
| - | Input | Output | Source |
|---|---|---|---|
| OpenAI — Standard (≤272K input) | $0.10 | $0.50 | developers.openai.com |
| OpenAI — Standard (>272K input) | $0.20 | $0.75 | developers.openai.com |
| OpenAI — Batch or Flex (≤272K) | $0.05 | $0.25 | developers.openai.com |
| Via OpenRouter (openai/gpt-6-luna) | $0.10 | $0.50 | OpenRouter list price (prompts up to 272K tokens) · openrouter.ai |
Checked
Facts, with sources
- OpenAI: "Our most efficient model for focused, high-volume tasks".Source: developers.openai.com · checked 2026-11-11
- Context 1,050,000 tokens; maximum output 128,000 tokens; text and image input, text output; knowledge cutoff May 18, 2026.Source: developers.openai.com · checked 2026-11-11
- Reasoning effort can be set to none, low, medium (the default), high, xhigh or max.Source: developers.openai.com · checked 2026-11-11
- $0.10 per million input tokens, $0.01 cached input and $0.50 output for prompts up to 272K tokens; above 272K input tokens $0.20 / $0.02 / $0.75. Batch and Flex: $0.05 input and $0.25 output (up to 272K).Source: developers.openai.com · checked 2026-11-11
- OpenAI’s model page gives no release date; the only snapshot listed is gpt-6-luna.Source: developers.openai.com · checked 2026-11-11
- Listed on OpenRouter as openai/gpt-6-luna since September 22, 2026, at $0.10 / $0.50 per million tokens.Source: openrouter.ai · checked 2026-11-11
- OpenRouter lists OpenAI, Azure and Amazon Bedrock as hosts for this model, at $0.10 / $0.50 on their base endpoints.Source: openrouter.ai · checked 2026-11-11
- The chat on this page sends questions to openai/gpt-6-luna through OpenRouter with reasoning effort set to none, so answers here use no extended reasoning.Source: developers.openai.com · checked 2026-11-11
Use it now
Chat
FAQ
Questions
How much does GPT-6 Luna cost?
OpenAI charges $0.10 per million input tokens, $0.01 for cached input and $0.50 per million output tokens for prompts up to 272K tokens; above that, $0.20 / $0.02 / $0.75. Batch and Flex cost $0.05 / $0.25.
How large is the GPT-6 Luna context window?
1,050,000 tokens; the maximum output is 128,000 tokens. Its knowledge cutoff is May 18, 2026.
What can GPT-6 Luna read and write?
It takes text and images as input and answers in text.
Is GPT-6 Luna on OpenRouter?
Yes, as openai/gpt-6-luna since September 22, 2026, at $0.10 / $0.50 per million tokens. OpenRouter lists OpenAI, Azure and Amazon Bedrock as hosts.
When was GPT-6 Luna released?
OpenAI’s model page does not give a release date. OpenRouter has listed it since September 22, 2026.
Can I use GPT-6 Luna here?
When the chat on this page is open, a signed-in user can talk to it; a reply costs credits by its real token cost (at least 1 credit, about $0.01, and about 1 for a typical short reply). The chat asks for no extended reasoning, so answers can differ from the default setting.
Is this an OpenAI page?
No. This page is unofficial and not affiliated with or endorsed by OpenAI. Every fact links to its source.