GPT-5.6 Luna pricing
Budget LLM from OpenAI —$0.20 input and$1.20 output per 1M tokens.
GABudgetLong-context tier
- Input /1M
- $0.20
- Output /1M
- $1.20
- Cached /1M
- $0.02
- Blended
- $0.70
- Context
- 1.05M
API model id: gpt-5.6-luna
Full price matrix
| Rate | Input /1M | Output /1M | Notes |
|---|---|---|---|
| Standard | $0.20 | $1.20 | |
| Cached input (read) | $0.02 | — | Prompt-cache hit |
| Batch API | $0.10 | $0.60 | Async, 50% off |
| Long context (> 272,000 tokens) | $0.40 | $1.80 | Input ×2, output ×1.5 |
List prices, USD, directional. Rates are provider list prices per 1M tokens and are meant for comparison, not billing. Batch rates shown as 50% off are derived where a provider offers batch but does not publish a separate figure. Preview, promo, intro, peak/off-peak, long-context, and third-party-host prices are labeled where they apply. Token counts vary by tokenizer, so per-token price is not always a like-for-like cost. Always confirm with the provider before relying on a number. Prices as of 2026-08-13.
Source: https://developers.openai.com/api/docs/pricing
Pricing notes
- Long-context pricing: above 272,000 tokens, input is billed at ×2 ($0.40) and output at ×1.5 ($1.80). See long-context pricing.
- Once a prompt reaches the ~272K-token long-context threshold the whole request bills long-context rates: $0.40 input / $1.80 output, cached input $0.04.
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