GPT-5.6 Luna Pricing
OpenAI · The cost-optimized tier of the GPT-5.6 family. After OpenAI's July 2026 price cu
Save up to 70% on GPT-5.6 Luna API cost
Same model, same quality — pay less per token than the official API. Pay-as-you-go, no credit card required.
Other OpenAI Models
GPT-5.6 SolGPT-5.6 TerraGPT-5.5GPT-5.4GPT-4.1GPT-4.1 MiniGPT-4.1 NanoGPT-4oGPT-4o Minio3o4-minio3-proGPT-4 TurboText Embedding 3 LargeSora 1GPT-5.6 Luna Pricing Context
Pricing position within OpenAI
GPT-5.6 Luna sits in the middle of OpenAI's pricing at $0.20/1M input — 93% below the lineup average ($0.10 cheapest, $20.00 most expensive). 3 siblings cost less, 11 cost more. This mid-tier positioning makes it a sensible default when you're unsure which variant to pick.
When GPT-5.6 Luna is worth the cost
GPT-5.6 Luna is used for agentic workflows combining visual understanding with action — document processing pipelines that extract data and call APIs, visual Q&A systems, and multimodal agents. Tool calling enables it to trigger external functions based on what it sees in images.
Cost vs sibling models
What makes GPT-5.6 Luna different from sibling models: compared to GPT-5.6 Sol ($4.80/1M more expensive, same 1M context); GPT-5.6 Terra ($1.80/1M more expensive, same 1M context); GPT-5.5 ($4.80/1M more expensive, 256K vs 1M context (smaller)). Choose GPT-5.6 Luna when vision input is needed.
Real-world cost scenarios
Real-world deployments: document processing pipelines (read invoice → extract fields → call accounting API), visual Q&A systems, and multimodal agents that act on what they see. GPT-5.6 Luna handles the full see-decide-act loop in a single model call.