Models

OpenAI: GPT-5.6 Luna

Name: OpenAI: GPT-5.6 Luna
Author: OpenRouter

OpenRouter

Partner broker — outside the EU

Last reviewed: 09 Oct 2026

Sovereignty and hosting

Catalogue only

This model is catalogued for reference. It is not hosted on LLM EU yet, and no first-party endpoint serves it here. Requests to it go to the provider directly, under that provider's own terms.

Summary

Served through OpenRouter as openai/gpt-5.6-luna. Runs outside the EU; the residency class on its endpoint says so.

Specifications

Provider: OpenRouter (US)
Context window: 1.1M
Parameters: Not verified: the provider has not documented this claim.
Modalities: text
License: Not verified: the provider has not documented this claim.
Open weights: no
Release date: Not verified: the provider has not documented this claim.
Tasks

Languages

Strong: —

Adequate: —

Strong

Adequate

Not verified: the provider has not documented this claim. — a language is listed as strong only where a source claims it; the card links the evidence where one exists.

When to use it

Strengths

Limits

Pricing

This model is catalogued for reference. It is not hosted on LLM EU yet, and no first-party endpoint serves it here. Requests to it go to the provider directly, under that provider's own terms.

Verification status

Where a field has no source, the card shows it as unverified instead of filling it in. An empty field is information.

LLM EU Verified means documented, not legally certified. It is not an AI Act conformity assessment and LLM EU is not an EU body.

Versions and variants

openai/gpt-5.6-luna

Example request

curl https://api.llmeu.com/v1/chat/completions \
  -H "Authorization: Bearer $LLMEU_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"gpt-5.6-luna","messages":[{"role":"user","content":"Hello"}]}'

Benchmarks

No published evaluation. This is a gap, not a hidden result.

Sources

openrouter.ai

Card changelog

09 Oct 2026 — Last reviewed

Last reviewed: 09 Oct 2026