gpt-5.6-luna

OpenAIgpt-5.6-luna

GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for its price tier.

API Pricing

Price typeBilling expression
Official price
Base pricingPricing tier: base
  • Input usage × $0.20
  • Output usage × $1.20
  • Cached read × $0.02
  • Cache creation × $0.25
GPT_Pro×0.660% of official list price
Base pricingPricing tier: base
  • Input usage × $0.12
  • Output usage × $0.72
  • Cached read × $0.01
  • Cache creation × $0.15

Group multiplier: x0.6

GPT_Ultra×0.880% of official list price
Base pricingPricing tier: base
  • Input usage × $0.16
  • Output usage × $0.96
  • Cached read × $0.02
  • Cache creation × $0.20

Group multiplier: x0.8

Official pricing is subject to the model provider's latest published pricing and may vary by request method or service region. GPT_Pro, GPT_Ultra — TokenByte channel pricing. Actual prices and availability reflect current platform data.

Model information

Model providerOpenAI
Model IDgpt-5.6-luna
Context window1050000
InputTextImage
OutputText

Frequently asked questions

01

What is GPT-5.6 Luna?

GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for its price tier.
02

How much does GPT-5.6 Luna cost?

GPT-5.6 Luna costs $0.20/M input tokens and $1.20/M output tokens, with separate rates for Cache Read at $0.02/M tokens, Cache Write at $0.25/M tokens, and Web Search at $10.00/1K calls.
03

What is the context length of GPT-5.6 Luna?

GPT-5.6 Luna has a 1,050,000 token context window. It supports up to 128,000 completion tokens.