GPT-6 Luna
GPT-6 Luna API pricing is $0.10 per million input tokens and $0.50 per million output tokens.
- Provider
- OpenAI
- API model name
- gpt-6-luna
- Status
- Current
- Input, $ per 1M tokens
- $0.10
- Cached input, $ per 1M tokens
- $0.01
- Output, $ per 1M tokens
- $0.50
- Sample request (10K in, 2K out), $
- $0.002
- Context window, tokens
- 1.05M
- Price checked on
- Official pricing page
- developers.openai.com
These are standard rates on OpenAI’s own API. Cached input is billed at $0.01 per million tokens. A request with 10,000 input tokens and 2,000 output tokens costs about $0.002 before caching or batch discounts. The API model name is gpt-6-luna, and the context window is 1.05M tokens.
- Cache writes, $ per 1M tokens
- $0.125
- Max output, tokens
- 128K
- Input types
- Text, image, file
- Open weights
- No
- Long-context pricing
- $0.20 input, $0.02 cached input, $0.25 cache writes, $0.75 output
- Batch pricing
- 50% off standard rates
- Sources
Page URL Checked OpenAI API pricing https://developers.openai.com/api/docs/pricing 2026-10-21 OpenAI GPT-6 Luna model page (prices) https://developers.openai.com/api/docs/models/gpt-6-luna 2026-09-30 OpenRouter model listing (context and output limits) https://openrouter.ai/models 2026-09-29
Questions
How much does the GPT-6 Luna API cost?
GPT-6 Luna costs $0.10 per million input tokens and $0.50 per million output tokens on OpenAI’s own API. Cached input costs $0.01 per million tokens.
What is the API model name for GPT-6 Luna?
Use
gpt-6-luna in API calls to OpenAI. The context window is 1.05M tokens, and a response can run to 128,000 output tokens.What does one GPT-6 Luna request cost?
A request with 10,000 input tokens and 2,000 output tokens costs about $0.002 at standard rates, before caching or batch discounts. Batch requests get 50% off standard rates.
Does GPT-6 Luna cost more for long prompts?
Yes. OpenAI lists long-context rates per million tokens: $0.20 input, $0.02 cached input, $0.25 cache writes, $0.75 output.
Sources
Prices are read from each provider’s official pricing page: OpenAI, Anthropic, Google Gemini API, xAI, DeepSeek and Mistral AI. Context and output limits that a provider does not publish come from OpenRouter’s model listing. Each model’s Sources field lists the pages used and the date each was checked. How we check prices · Price change log