gpt-5.6-lunaChatExamples verified 2026-09-25GPT 5.6 Luna
Native Codex and OpenAI SDK models, available on both Responses and Chat Completions.
- Official price
- $0.20 / $1.20/ 1M tokensInput / output
- Context window
- 1M tokens1,050,000
Pricing
Official price in USD. Actual charge = official price × group multiplier.
- Input
- $0.20 / 1M tokens
- Cached input
- $0.02 / 1M tokens
- Output
- $1.20 / 1M tokens
- Context over 272K
- input ×2 · output ×1.5