GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic...
With CoreAI, you can start chatting with OpenAI: GPT-6 Luna instantly — no separate subscription needed. CoreAI lets you chat with OpenAI: GPT-6 Luna alongside 300+ other AI models from OpenAI and other providers like OpenAI, Anthropic, Google, Meta, and more.
Measured against all 438 chat models CoreAI serves, OpenAI: GPT-6 Luna sits at #3 for context capacity — 1.1M tokens, roughly 787,500 words or 1,575 pages of text in a single conversation. On price, it is the #65 cheapest of 149 budget-tier models by input cost. Released 2026-09-22, it is one of the 7 newest additions to the catalog. It supports step-by-step reasoning (thinking mode) and accepts image input.
Every model in this table is available on CoreAI — open the web app and run the same prompt through OpenAI: GPT-6 Luna and OpenAI: GPT-6 Luna Pro side by side to judge with your own eyes.
A typical question (about 1,000 tokens in, 500 out) runs $0.00035 on OpenAI: GPT-6 Luna's raw per-token rates; a heavy session with a 50K-token document costs about $0.007. On CoreAI you don't juggle these numbers — one subscription covers OpenAI: GPT-6 Luna and 300+ other models under a plan usage limit, with no API keys. See plans.
OpenAI: GPT-6 Luna handles 1.1M tokens of context — roughly 787,500 words, or about 1,575 pages of text in one conversation.
OpenAI: GPT-6 Luna's underlying rates are $0.1 per 1M input tokens and $0.5 per 1M output tokens. On CoreAI it is included in one subscription alongside 300+ models, so there is no per-token billing to manage.
Yes — OpenAI: GPT-6 Luna accepts image input, so you can attach screenshots, photos or diagrams and ask questions about them.
Yes. OpenAI: GPT-6 Luna can work through problems step by step before answering; on CoreAI you can toggle thinking mode per message.
Open the CoreAI web app or the iOS/Android app, pick OpenAI: GPT-6 Luna in the model selector, and chat — no API key, no per-token billing. One subscription covers OpenAI: GPT-6 Luna and 300+ other models.
The closest alternatives on CoreAI are OpenAI: GPT-6 Luna Pro, OpenAI: GPT Luna Latest, Qwen: Qwen3.7 Flash — similar tier and capability. The fastest way to choose is running one prompt through them side by side in CoreAI's Compare view.
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