GPT-5.6 Luna pricing

Budget LLM from OpenAI —$0.20 input and$1.20 output per 1M tokens.

GABudget

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

Price matrix for GPT-5.6 Luna, USD per 1M tokens
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

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 2026-08-03.
Source: https://developers.openai.com/api/docs/pricing

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