Released07/2026
Speed0 tokens/s
Time to first token0.00s
Input price$0.2/1M
Output price$1.2/1M
Rankings
Review
GPT-5.6 Luna suits developers, researchers, and knowledge workers needing sharp reasoning combined with strong coding skills. Excels at logic and code, but less ideal for complex autonomous agents.
Strengths
- Superior reasoning—well-suited for analysis and complex multi-step problem-solving
- Ranked #8 in coding—production-ready code, efficient debugging, multilingual support
- Ranked #9 in natural conversation—fluid dialogue, accurate answers, well-suited for advisory roles
Weaknesses
- Ranked #25 in AI Agents—limited autonomous action, not ideal for complex automation
- Unproven context length or processing speed compared to other frontier models
Use cases
Programming and software development—code review, debugging, test writingAnalysis and reasoning—research, strategy, problem-solvingAI assistant for advisory, Q&A, and customer support
Guides & videos
GPT-5.6 Luna is OpenAI's cost-effective AI model, suitable for standard tasks at $1/$6 per 1M tokens. Accessible via OpenAI API, Azure AI, AWS Bedrock, or GitHub Copilot. Luna features a 1.05M-token context window, ideal for long-document processing. Use the model ID 'gpt-5.6-luna' in API calls, or select it from the dropdown menu in ChatGPT Plus.