LLM Perks

GPT 6 Luna

OpenAI · All GPT models
Free right now Small New
Long context

GPT 6 Luna is a language model from OpenAI. It is currently free at 1 provider with up to 1.1M tokens of context.

Developer
OpenAI
Context
1.1M tokens
Type
Text
License
Proprietary
Free since
October 12, 2026

Where to use GPT 6 Luna for free

Each row is a separate free endpoint with its own limits.

ProviderContextLimitCard
UnoRouter
gpt-6-luna:free
1.1M No-card free models use shared capacity and per-model limits; availability can change. No Open

Quick start

curl https://api.unorouter.com/v1/chat/completions \
  -H "Authorization: Bearer $UNOROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-6-luna:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Example for UnoRouter. Any OpenAI-compatible client works: Cursor, Cline, OpenCode, Open WebUI.

Benchmarks

Intelligence Index
38.1
Humanity's Last Exam
38.5%
Long context (LCR)
83.3%

Source: Artificial Analysis · GPT-6 Luna (Max)

Similar free models

FAQ

Is GPT 6 Luna free?

Yes. As of October 12, 2026, GPT 6 Luna is free at UnoRouter. Each provider has its own limits — see the table above.

What is the context window of GPT 6 Luna?

The largest context among free routes is 1,100,000 tokens. Some providers cap it lower.

How do I call GPT 6 Luna via API?

Use any OpenAI-compatible client with base URL https://api.unorouter.com/v1, model ID gpt-6-luna:free, and a UnoRouter key.

How good is GPT 6 Luna?

Artificial Analysis Intelligence Index: 38.1. For comparison, the strongest free model in the catalog right now is GLM 5.3.

Is GPT 6 Luna open-weight?

No, it is proprietary: access is only through provider APIs.