GPT-5.6 Luna (batch)
OPENAI Developer Architecture Profile
Intelligence (ELO)1500Chatbot Arena Verified
Max Context Limit1,050,000Max Out: 128,000 tokens
Prompt Caching90% OFF$0.01 / 1M cached
Standard API / 1M$0.70🧠 Deep Reasoner
Model Capabilities & Contract SLAs
- Coding & Logic
- Fictional
- Reasoning
- Agentic
- 📋 Strict JSON Schema
- 🛠️ Native Tool Calling
- 🧠 Extended Test-Time Reasoning
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...
Granular Pricing Matrix
Input Tokens (Standard Prompt)$0.10 / 1M
⚡ Cached Input (Prompt Cache Read)90% OFF$0.01 / 1M
Output Tokens (Completion)$0.60 / 1M
Pricing data via OpenRouter. Sync: 10/2/2026
Evaluate Competitors
VS Engine MatchupGPT-5.6 Luna (batch) vs OpenAI: GPT-5.6 Luna Pro (batch)VS Engine MatchupGPT-5.6 Luna (batch) vs Anthropic: Claude Fable 5VS Engine MatchupGPT-5.6 Luna (batch) vs Anthropic: Claude Opus 4.6VS Engine MatchupGPT-5.6 Luna (batch) vs Google: Gemini 2.5 Pro Preview 06-05VS Engine MatchupGPT-5.6 Luna (batch) vs Anthropic: Claude Fable 5.1 (batch)VS Engine MatchupGPT-5.6 Luna (batch) vs OpenAI: GPT-5.6 Luna