GPT-5.6 Luna

GPT-5.6 Luna is OpenAI's lowest-cost published GPT-5.6 limited-preview variant for lighter reasoning, coding triage, and staged API experiments.

Platform: Replicate

Language ModelReasoningCodingOpenAI

0 runs

OpenAI limited preview

2/1M input tokens and $10/1M output tokens; batch pricing listed by OpenAI as $1/1M input tokens and $5/1M output tokens

Commercial

🚀Function Overview

A low-cost GPT-5.6 preview option for early routing experiments, triage, and workloads that should not start on Sol-level pricing.

Key Features

Official OpenAI GPT-5.6 family member with model ID gpt-5.6-luna
Positioned by OpenAI as less capable and more cost-effective than Sol
Lowest published GPT-5.6 standard token pricing in the OpenAI Help Center
Useful as a first-pass route before escalating to Terra or Sol
Preview access can vary by account and rollout phase

Use Cases

•Low-cost GPT-5.6 family smoke tests
•Coding triage before escalation to Terra or Sol
•Model-routing experiments where price is the first constraint
•Reader comparison against older low-cost OpenAI model choices

⚙️Input Parameters

messages

array

Chat or reasoning task messages sent to the OpenAI API or supported OpenAI product surface.

model

string

Use gpt-5.6-luna when the OpenAI API account has access to the GPT-5.6 Luna preview.

💡Usage Examples

Example 1

Input Parameters

{
  "model": "gpt-5.6-luna",
  "messages": [
    {
      "role": "user",
      "content": "Classify whether this issue needs a cheap fix attempt or escalation to a stronger reasoning model."
    }
  ]
}

Output Results

A response from the OpenAI preview model. Verify current model access, request schema, and pricing before using Luna in production routing.

Quick Actions

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Technical Specifications

Hardware Type: OpenAI limited preview
Run Count: 0
Commercial Use: Supported
Pricing: 2/1M input tokens and $10/1M output tokens; batch pricing listed by OpenAI as $1/1M input tokens and $5/1M output tokens
Platform: Replicate

Related Keywords

GPT-5.6 Lunagpt-5.6-lunaOpenAI GPT-5.6OpenAI preview modellow-cost GPT-5.6GPT-5.6 API pricing

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