OpenAI
Latency—
Throughput—
Upload rate—
Context length—
Max output—
Input price—1M output tokens
Output price$1.21M output tokens
Cache read—1M output tokens
Cache write—1M output tokens
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openai/gpt-5.6-luna
OpenAI: gpt-5.6-luna
OpenAI began the limited preview of GPT-5.6 Luna on June 26, 2026 and later included it in the generally available GPT-5.6 family. GPT-5.6 Luna is the lowest-cost model in the family and is used for workloads where lower inference cost and fast response are priorities.
Modetext → text
Input price—
Output price$1.2 per M tokens
Context length
Weekly usage4.93K tokens
Listed at
Performance
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Code Example
Replace <YOUR_API_KEY> with the API key generated on your token management page.
Authentication
All requests must include the Authorization: Bearer <TOKEN> header.
Endpoint Path
POST
Supported Parameters
ParameterTypeDefaultDescription
Rate Limits
GroupRPMTPMRPD
RPM = requests per minute, TPM = tokens per minute, RPD = requests per day. Limits apply by token group.
Pricing
GroupBilling typePrice summary
OpenAI0%
Per call
Input price—per 1M tokens
Completion price1.2per 1M tokens
Cache read price—per 1M tokens
Cache write price—per 1M tokens
OpenAI0%
Per call
Input price—per 1M tokens
Completion price1.2per 1M tokens
Cache read price—per 1M tokens
Cache write price—per 1M tokens
OpenAI0%
Per call
Input price—per 1M tokens
Completion price1.2per 1M tokens
Cache read price—per 1M tokens
Cache write price—per 1M tokens
OpenAI0%
Per call
Input price—per 1M tokens
Completion price1.2per 1M tokens
Cache read price—per 1M tokens
Cache write price—per 1M tokens
OpenAI0%
Per call
Input price—per 1M tokens
Completion price1.2per 1M tokens
Cache read price—per 1M tokens
Cache write price—per 1M tokens
OpenAI0%
Per call
Input price—per 1M tokens
Completion price1.2per 1M tokens
Cache read price—per 1M tokens
Cache write price—per 1M tokens
OpenAI0%
Per call
Input price—per 1M tokens
Completion price1.2per 1M tokens
Cache read price—per 1M tokens
Cache write price—per 1M tokens
OpenAI0%
Per call
Input price—per 1M tokens
Completion price1.2per 1M tokens
Cache read price—per 1M tokens
Cache write price—per 1M tokens
OpenAI0%
Per call
Input price—per 1M tokens
Completion price1.2per 1M tokens
Cache read price—per 1M tokens
Cache write price—per 1M tokens
OpenAI0%
Per call
Input price—per 1M tokens
Completion price1.2per 1M tokens
Cache read price—per 1M tokens
Cache write price—per 1M tokens
OpenAI0%
Per call
Input price—per 1M tokens
Completion price1.2per 1M tokens
Cache read price—per 1M tokens
Cache write price—per 1M tokens