GPT-6 Luna on Magicdoor: A Lower-Cost OpenAI Chat Guide

Last updated: October 7, 2026.

Which model is available now?

GPT-6 Luna is the current lower-cost OpenAI chat option on Magicdoor. The old GPT-5.4 Mini identifier resolves to Luna for existing chats; it is not a second model you can choose. This guide's route is retained for readers following older links, not as a claim that the retired model remains available.

Luna's standard rate is $0.10 per million input tokens and $0.50 per million output tokens. Long-context and caching adjustments can change the quote. See the full model cost guide.

Try a representative task

1. Ask Luna to summarize a short document and verify the source text.
2. Try a compatible PDF or image question, then inspect the answer against the attachment.
3. If you need calculations on a compatible file, try its supported code interpreter and check the result.
4. For a harder task, compare a response from GPT-6.1 Sol or Claude Sonnet 5.5. Do not assume a particular model is faster or better without testing your workload.

Basic costs $6/month with $2 included usage balance in the first month and $1 per renewal; Plus costs $12/month with $7 monthly usage balance. Additional usage is billed separately. Check subscription details before choosing a plan.

Try GPT-6 Luna on Magicdoor

FAQ

Is GPT-5.4 Mini a current Magicdoor option?

No. Existing GPT-5.4 Mini chat identifiers resolve to GPT-6 Luna. New chats can select GPT-6 Luna; the retired identifier is not a separate picker option.

How much does GPT-6 Luna cost on Magicdoor?

Standard rates are $0.10 per million input tokens and $0.50 per million output tokens. Cache and long-context rates may differ.

What can I use GPT-6 Luna for?

Try everyday questions, summarization and compatible file analysis. GPT-6 Luna supports PDF, vision and code interpreter in Magicdoor; verify outputs before relying on them.