OpenAI: GPT-6 Luna
openai/gpt-6-luna
GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic tasks, and at higher reasoning effort it can take on complex software engineering and computer-use tasks that previously called for a Sol-tier model. It shares the GPT-6 family's gains in factual reliability and its clearer, more concise communication style.
Model specifications
- Input
- text, image, file
- Output
- text
- Context
- 1,050,000 tokens
- Max output
- 128,000 tokens
- Input price
- $0.075 / 1M tokens
- Output price
- $0.375 / 1M tokens
- Released
- 2026-09-23
Capabilities
- Streaming
- Function calling
- Vision
- JSON mode
Provider pricing, discounts and data privacy
Compare effective provider prices, published discounts, regions, retention policies, training use, compliance, and privacy links by service tier.
Flex service tier
1 available provider · tier input average $0.05 / 1M tokens · tier output average $0.25 / 1M tokens
OpenAI
Tier: Flex · Region: US
Pricing
- Input
- $0.05 / 1M tokens
- Output
- $0.25 / 1M tokens
- Cache read
- $0.005 / 1M tokens
- Cache write
- $0.0625 / 1M tokens
No provider discount is currently published.
Data privacy and compliance
- Region
- US
- Zero data retention
- No
- Data retention
- Zero retention
- Used for training
- No
- Data collection
- Moderated
- No
- GDPR compliant
- Yes
- HIPAA compliant
- Yes
- SOC 2 certified
- Yes
- BYOK supported
- Yes
Privacy policy · Terms · Official website · Documentation · Status
Standard service tier
2 available providers · discounts up to 25.000000000000007% · tier input average $0.0875 / 1M tokens · tier output average $0.4375 / 1M tokens
Azure
Tier: Standard · Region: US
Pricing
- Input
- $0.075 / 1M tokens
- Output
- $0.375 / 1M tokens
- Cache read
- $0.0075 / 1M tokens
- Cache write
- $0.09375 / 1M tokens
Discounts
- Input: 25% off — list $0.1 / 1M tokens, discounted $0.075 / 1M tokens, effective $0.075 / 1M tokens
- Cache read: 25% off — list $0.01 / 1M tokens, discounted $0.0075 / 1M tokens, effective $0.0075 / 1M tokens
- Output: 25% off — list $0.5 / 1M tokens, discounted $0.375 / 1M tokens, effective $0.375 / 1M tokens
- Cache write: 25% off — list $0.125 / 1M tokens, discounted $0.09375 / 1M tokens, effective $0.09375 / 1M tokens
- Prompt Price::Gt::272000: 25% off — list $0.2, discounted $0.15
- Prompt Price::Lte::272000: 25% off — list $0.1, discounted $0.075
- Cache Read Price::Gt::272000: 25% off — list $0.02, discounted $0.015
- Completion Price::Gt::272000: 25% off — list $0.75, discounted $0.5625
- Cache Read Price::Lte::272000: 25% off — list $0.01, discounted $0.0075
- Cache Write Price::Gt::272000: 25% off — list $0.25, discounted $0.1875
- Completion Price::Lte::272000: 25% off — list $0.5, discounted $0.375
- Cache Write Price::Lte::272000: 25% off — list $0.125, discounted $0.09375
Data privacy and compliance
- Region
- US
- Zero data retention
- Yes
- Data retention
- Zero retention
- Used for training
- No
- Data collection
- Moderated
- No
- GDPR compliant
- Yes
- HIPAA compliant
- Yes
- SOC 2 certified
- Yes
- BYOK supported
- No
Privacy policy · Terms · Official website · Documentation · Status
OpenAI
Tier: Standard · Region: US
Pricing
- Input
- $0.1 / 1M tokens
- Output
- $0.5 / 1M tokens
- Cache read
- $0.01 / 1M tokens
- Cache write
- $0.125 / 1M tokens
No provider discount is currently published.
Data privacy and compliance
- Region
- US
- Zero data retention
- Yes
- Data retention
- Zero retention
- Used for training
- No
- Data collection
- Moderated
- No
- GDPR compliant
- Yes
- HIPAA compliant
- Yes
- SOC 2 certified
- Yes
- BYOK supported
- Yes
Privacy policy · Terms · Official website · Documentation · Status
Priority service tier
1 available provider · tier input average $0.2 / 1M tokens · tier output average $1 / 1M tokens
OpenAI
Tier: Priority · Region: US
Pricing
- Input
- $0.2 / 1M tokens
- Output
- $1 / 1M tokens
- Cache read
- $0.02 / 1M tokens
- Cache write
- $0.25 / 1M tokens
No provider discount is currently published.
Data privacy and compliance
- Region
- US
- Zero data retention
- No
- Data retention
- Zero retention
- Used for training
- No
- Data collection
- Moderated
- No
- GDPR compliant
- Yes
- HIPAA compliant
- Yes
- SOC 2 certified
- Yes
- BYOK supported
- Yes
Privacy policy · Terms · Official website · Documentation · Status
Frequently asked questions
- What is OpenAI: GPT-6 Luna?
- GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic tasks, and at higher reasoning effort it can take on complex software engineering and computer-use tasks that previously called for a Sol-tier model. It shares the GPT-6 family's gains in factual reliability and its clearer, more concise communication style.
- How much does OpenAI: GPT-6 Luna cost?
- Input costs start at $0.075 / 1M tokens and output costs start at $0.375 / 1M tokens. Provider-level prices vary by service tier.
- Are provider discounts available for OpenAI: GPT-6 Luna?
- Yes. Current provider offers include discounts of up to 25% from list price. The provider table shows list, discounted, and effective prices.
- What is the context length of OpenAI: GPT-6 Luna?
- OpenAI: GPT-6 Luna supports a 1,050,000 token context window and up to 128,000 output tokens.
- What capabilities does OpenAI: GPT-6 Luna support?
- OpenAI: GPT-6 Luna supports Streaming, Function calling, Vision, JSON mode.
- Which providers offer OpenAI: GPT-6 Luna?
- OpenAI: GPT-6 Luna is available from OpenAI, Azure.
- How do providers handle data privacy for OpenAI: GPT-6 Luna?
- 2 of 2 providers report that customer data is not used for training, and 1 offer zero-data-retention routing. Retention, compliance, and privacy-policy links are listed per provider.