GPT-5.6 Luna

New

openai/gpt-5.6-luna-20260709

OpenAI: GPT-5.6 Luna, released on 2026-07-09, accepts file, image, and text inputs and generates text output. It supports tools and reasoning, has a context length of 1,050,000 tokens, is not open-weight, and is priced at 1 unit per million input tokens and 6 units per million output tokens.

Tracked, but not yet independently ranked

This model is in the catalog, but we do not yet have enough public benchmark data to place it confidently in quality-focused recommendations. It may still appear in price-based recommendations.

  • tool use
  • structured outputs
  • reasoning

At a glance

provideropenai
releasedJul 9, 2026
context1.1M
input / M$1

Specifications

What the API gives you

Context window
1.1M tokens
Max output
128K tokens
Input price
$1 / 1M tokens
Output price
$6 / 1M tokens
Cache read
$0.100 / 1M tokens
Modalities
file, image, text → text
Knowledge cutoff
Feb 16, 2026
Released
Jul 9, 2026

Recommendation coverage

Where this model appears

  1. #2Best Value LLM
  2. #6Best Cheap LLM for High Volume

Benchmarks

No independent benchmark results are linked to this model yet. We keep it visible while withholding quality claims until usable results arrive.

Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.