GPT-5.6 Luna
GPT-5.6 Luna is OpenAI's low-cost model variant within the GPT-5.6 family, positioned for fast and cost-sensitive applications with pricing of $0.20 per million input tokens and $1.20 per million output tokens following an 80% price reduction. The model is available across OpenAI's platforms including ChatGPT, API, and Amazon Bedrock, and supports features like explicit prompt caching with 90% discounts on cached input for agentic workflows.
Updated 3 August 2026
Specifications
No specifications recorded yet.
Latest developments
OpenAI cuts prices for two of its GPT-5.6 AI models as companies grow sensitive to costs
TLDR · 3 days ago ·
7
Advancing the price-performance frontier with GPT‑5.6
Simon Willison · 3 days ago ·
16
llm 0.32rc2
Simon Willison · 3 days ago ·
27
Chinese AI competitors may have forced OpenAI’s hand on pricing
The New Stack · 3 days ago ·
3
Introducing explicit prompt caching for OpenAI GPT-5.6 models on Amazon Bedrock
AWS Machine Learning · 3 days ago ·
26
Get started with OpenAI GPT-5.6 Sol, Terra, and Luna on Amazon Bedrock
AWS Machine Learning · 1 week ago ·
46
OpenAI’s GPT-5.6 Family, New Ways to Train Robots, Models Invoking Models
The Batch ·
29
OpenAI GPT-5.6 Sol, Terra, and Luna are now generally available on Amazon Bedrock
AWS Machine Learning · 2 weeks ago ·
46
Q3 2026
Amazon Bedrock adds advanced prompt optimization and explicit prompt caching features Feature update
OpenAI releases GPT-5.6 model family with efficiency improvements and significant price reductions Model release
OpenAI releases GPT-5.6 family of models (Sol, Terra, Luna) with general availability on Amazon Bedrock Model release
OpenAI releases GPT-5.6 model family with three tiers (Luna, Terra, Sol) and new multi-agent capabilities Model release
OpenAI releases GPT-5.6 model family with improved efficiency and reasoning capabilities Model release
- OpenAI cuts prices for two of its GPT-5.6 AI models as companies grow sensitive to costs
- Advancing the price-performance frontier with GPT‑5.6
- llm 0.32rc2
- Chinese AI competitors may have forced OpenAI’s hand on pricing
- Introducing explicit prompt caching for OpenAI GPT-5.6 models on Amazon Bedrock
- Get started with OpenAI GPT-5.6 Sol, Terra, and Luna on Amazon Bedrock
- OpenAI’s GPT-5.6 Family, New Ways to Train Robots, Models Invoking Models
- OpenAI GPT-5.6 Sol, Terra, and Luna are now generally available on Amazon Bedrock
- [AINews] not much happened today
- OpenAI launches GPT-5.6 Sol, Terra, and Luna on apps and API
- The new GPT-5.6 family: Luna, Terra, Sol
- GPT-5.6 Sol Goes Live Tomorrow
Relationships
Products & technology
- OpenAI develops this model · 10 sources
- Amazon Bedrock deploys this model · 2 sources
- Derived from GPT-5.6 · 1 source
- Amazon Bedrock integrated with this model · 1 source