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GPT-6 Luna

● live

OpenAI

Released: September 22, 2026
Price: $0.10 / $0.50 per 1M tokens
Context: 1.05M tokens
Knowledge cutoff: May 18, 2026
Bench index: 29.6 · #34 of 50

Live — Sep 22, in the API and ChatGPT (Free and Go too) the same day; the cheap, high-volume tier; models.dev lists gpt-6-luna on OpenAI's own API (read Sep 24). The watchers keep tracking it: lineup changes, pricing moves and deprecations all alert.

Answering in 0.5s· answered 4h agoIs OpenAI API down? →

Watch for OpenAI’s next model, free →Launch report (PDF)

Timeline

2026-10-06

OpenAI opens the Decisions API: GPT-6 Luna returns probabilities, choices and scores for $0.10 per million input tokenspost

OpenAI has opened a public beta of the Decisions API, a new endpoint (POST /v1/decisions) where the model answers a question about your input with a number or a label instead of writing text. GPT-6 Luna is the only model it runs.

2026-09-22

GPT-6 Luna verified live — from the vendor's own announcement and catalog listingverified

On the bench index

LMArena: 1,578.2LiveBench: 60.4Vals AI: 52.3Artificial Analysis: 27.8Epoch AI: 156.5AW Index: 29.6

full comparison table →

Coding leaderboard

#28 of 47 on the coding index, at 38.5 · combines LMArena · Coding, LiveBench · Coding, Vals Vibe Code Bench

the AI coding leaderboard →

The official word

We alert on verified API behavior, never on announcements alone — but when OpenAI speaks, it's here: openai.com/news ↗

Where to use GPT-6 Luna

37 providers list GPT-6 Luna in the models.dev catalog (as of 2026-11-10), under the model ids shown below.

OpenAIgpt-6-luna

Amazon Bedrockglobal.openai.gpt-6-luna · openai.gpt-6-luna · us.openai.gpt-6-luna

Azuregpt-6-luna

Azure Cognitive Servicesgpt-6-luna

OpenRouteropenai/gpt-6-luna · openai/gpt-6-luna-pro

Vercel AI Gatewayopenai/gpt-6-luna · openai/gpt-6-luna-fast

302.AIgpt-6-luna

AI/ML APIopenai/gpt-6-luna

AIHubMixgpt-6-luna

Aixyopenai/gpt-6-luna

Boundlessgpt-6-luna

Cloudflare AI Gatewayopenai/gpt-6-luna

Also listed by CommandCode, Cortecs, CrossModel, DevPass (LLM Gateway), DigitalOcean, Eden AI, GitHub Copilot, GitLab Duo, Kilo Gateway, LLM Gateway, LowRouter, Merge Gateway, NanoGPT, NEAR AI Cloud, Neon, Ofox, OpenCode, OpenCode Go, Perplexity Agent, Prime Inference, Requesty, SAP AI Core, Standard Compute, Venice AI, Vivgrid.

Listings cover the model family, so a provider may list a sibling tier under the same name. Check the id before you build on it.

Try it first-hand on OpenAI's own OpenAI Playground ↗

GPT-6 Luna: quick answers

Is GPT-6 Luna out?

Yes. GPT-6 Luna is live and has been since September 22, 2026.

When was GPT-6 Luna released?

September 22, 2026.

Is GPT-6 Luna good for coding?

On the ArtificialWatch coding index it scores 38.5, #28 of 47 ranked models. The index combines LMArena · Coding, LiveBench · Coding and Vals Vibe Code Bench, taking the median of each model's percentile across them.

Who makes GPT-6 Luna?

OpenAI. ArtificialWatch also tracks GPT Image 2.6, GPT-6 Rosalind Research, GPT-6.1 Terra, GPT-6.1 Sol, GPT-6 Sol, GPT-Live-1, GPT-Image-2.5 and GPT-6 Astra from OpenAI.

Where can I use GPT-6 Luna?

37 providers list it in the models.dev catalog, including OpenAI, Amazon Bedrock, Azure, Azure Cognitive Services and OpenRouter. The exact model ids each one lists are on this page.

How much does GPT-6 Luna cost?

OpenAI's own API lists GPT-6 Luna (gpt-6-luna) at $0.10 per million input tokens and $0.50 per million output tokens, and $0.01 per million cached input tokens. Prompts over 272K tokens cost $0.20 input and $0.75 output. Prices as published in the models.dev catalog, as of 2026-11-10.

What is GPT-6 Luna's context window?

1.05M tokens, with up to 128K output tokens per response, as OpenAI lists GPT-6 Luna (gpt-6-luna).

What is GPT-6 Luna's knowledge cutoff?

May 18, 2026, as OpenAI publishes it. GPT-6 Luna knows nothing after that date unless it is given search or the facts in the prompt. Every lab's published cutoff is on the LLM knowledge cutoffs page.

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