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GPT-5.6 Luna

by OpenAI

GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic

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Models

GPT-5.6 Luna

Added 10 July 2026

#openai

Overview

GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for...

How to use / API access

Call via OpenRouter with model id `openai/gpt-5.6-luna`.

  • openrouter · openai/gpt-5.6-luna Docs

OpenRouter id: openai/gpt-5.6-luna

Benchmarks

  • Intelligence Index (artificial-analysis) : 51.2 index
  • Coding Index (artificial-analysis) : 71.4 index
  • Agentic Index (artificial-analysis) : 45.6 index

Notes

GPT-5.6 Luna is listed in the EDNA Models directory from the OpenRouter catalogue.

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