GPT-6 Luna, unlimited in SelGPT
GPT-6 Luna is OpenAI’s fast everyday model. In SelGPT it is unlimited on every paid plan, within fair use, so it’s the one to reach for most of the time.
By the SelGPT team. Updated
GPT-6 Luna is a fast, low-cost model from OpenAI for everyday questions, writing, summaries and reading files and images. SelGPT includes it unlimited within fair use on Plus and Pro, from $9.99 a month billed yearly, and it can search the web and show its sources.
What GPT-6 Luna is good at
- Answering questions, with web search and sources when the answer depends on recent information.
- Writing and rewriting emails, posts and documents.
- Summarising long PDFs and documents into the points that matter.
- Reading images and screenshots you upload.
Try asking
- “Summarize this 40-page PDF in five bullet points.”
- “Rewrite this email so it sounds friendly but firm.”
- “What changed in the news about this today? Show your sources.”
Questions
Is GPT-6 Luna unlimited in SelGPT?
Yes, on Plus and Pro, within a daily fair-use limit. It keeps working even after your monthly allowance for the other models runs out.
Who makes GPT-6 Luna?
OpenAI. SelGPT gives you access to it alongside models from other labs.
Related
- AI for writingDraft, rewrite and polish emails, essays, posts and reports with SelGPT, an AI writing assistant with GPT-6.1, Claude, Gemini and more, web search and no ads.
- Chat with PDFUpload a PDF to SelGPT and ask questions about it, get a summary, or pull out the key points, figures and dates. Free to try.
- ModelsEvery model in SelGPT: GPT-6 Luna, Claude Opus 5.5, GPT-6.1 Sol, Gemini 3.8 Flash, Kimi K3, DeepSeek, MiMo, GLM and Qwen, in one chat.
- Claude Opus 5.5Use Anthropic’s Claude Opus 5.5, ranked #1 on the Artificial Analysis Intelligence Index, in SelGPT Plus from $9.99 a month billed yearly.
- GPT-6.1 SolUse OpenAI’s GPT-6.1 Sol in SelGPT for writing, analysis and code, alongside Claude, Gemini and Kimi, from $9.99 a month billed yearly.
- Gemini 3.8 FlashUse Google’s Gemini 3.8 Flash in SelGPT for research and long documents, alongside GPT-6.1, Claude and Kimi, from $9.99 a month billed yearly.