GPT-6 Astra vs GPT-6.1 Sol and Luna - Which OpenAI Model Should You Use?

The current OpenAI choice on magicdoor.ai starts with GPT-6.1 Sol, the default. Use GPT-6 Luna for the lowest-cost everyday work, or choose subscriber-only GPT-6 Astra for the hardest end-to-end work.

All three models support vision, PDFs, reasoning, Canvas, and code interpreter on magicdoor.ai. The practical difference is price and how much model you want to spend on each turn.

Quick Answer

	GPT-6 Luna	GPT-6.1 Sol	GPT-6 Astra
Current role	Efficient OpenAI model	Default OpenAI flagship	Optional subscriber-only premium model
Standard input price	$0.10 per 1M tokens	$2 per 1M tokens	$10 per 1M tokens
Standard output price	$0.50 per 1M tokens	$10 per 1M tokens	$50 per 1M tokens
Good starting point for	Drafts, summaries, routine coding help, PDFs, and data work	Complex reasoning, harder coding, and demanding analysis	The hardest end-to-end work
Vision / PDFs / reasoning / Canvas	Yes	Yes	Yes
Code interpreter	Yes	Yes	Yes

For the full lineup, see the model cost guide.

Start with GPT-6 Luna

Luna is the sensible default when you do not yet know whether a task needs the flagship. It costs far less than Sol at current standard input and output token rates.

Start with Luna for:

email and document drafts
summaries and extraction
routine coding questions
spreadsheet, CSV, and file work with code interpreter
PDF or image analysis
an inexpensive first pass before deeper review

Price alone does not tell you which answer will be better for your exact prompt. Run the real task, inspect the result, and only switch up when Luna misses something important.

Switch to GPT-6.1 Sol

Sol is the default OpenAI model on magicdoor.ai and remains cheaper than GPT-6 Astra. Use it when the cost of a weak first answer is higher than the extra token spend.

Good reasons to switch include:

a multi-step problem remains unresolved
a code review needs more careful reasoning
the first analysis missed constraints or edge cases
you want a second pass on an important decision
the output will be used in higher-stakes work

Do not use Sol automatically for every message. A long conversation can mix Luna for routine turns with Sol for the few turns that need it.

A Practical Three-Model Workflow

Start on Luna. Give it the complete goal, relevant files or data, and your output format.
Check the answer against a clear standard. Look for missing constraints, unsupported assumptions, and incomplete calculations.
Stay on Luna if the result works. There is no benefit in paying more just because a flagship exists.
Switch to Sol for a difficult turn. Ask it to inspect the previous work, identify gaps, and produce a corrected answer.
Choose Astra only for the hardest end-to-end work. Subscribers can escalate when Sol is not enough, then switch back for routine edits or formatting.

magicdoor.ai supports switching models mid-conversation, with no platform rate limits or cooldowns. Live cost monitoring helps you see the effect of each choice.

When Current Information Matters

No model choice removes the need for current sources. magicdoor.ai can automatically search when a chat needs live information. For research-heavy work, turn on Perplexity-powered search for current sources, then continue with Luna, Sol, or Astra for analysis and writing.

What It Costs to Use OpenAI Models Here

magicdoor.ai has a $6/month base subscription, including $1 in credits, with pay-as-you-go usage on top. Most users typically spend $8-10/month total. Top-up balances do not expire.

That structure rewards using the least expensive model that completes the task. Read the usage-based pricing guide for the broader cost model and the token guide if you want to understand how input and output affect a chat's price.

Bottom Line

Use GPT-6.1 Sol as the OpenAI default. Move down to Luna when minimizing cost matters most, or choose subscriber-only GPT-6 Astra for the hardest end-to-end work. Because you can switch inside the same conversation, start with Sol and move to Luna or Astra when cost or task difficulty calls for it.

FAQ

Which OpenAI models are currently available on magicdoor.ai?

GPT-6 Astra, GPT-6.1 Sol, and GPT-6 Luna are the current OpenAI chat models on magicdoor.ai. Sol remains the default and cheaper than subscriber-only Astra; Luna is the lowest-cost option.

How much do the OpenAI models cost?

At standard rates per 1M tokens, GPT-6 Astra costs $10 input / $50 output, GPT-6.1 Sol costs $2 input / $10 output, and GPT-6 Luna costs $0.10 input / $0.50 output.

Which OpenAI model should I start with?

Start with GPT-6.1 Sol, the magicdoor.ai default. Use Luna for the lowest-cost routine work or subscriber-only Astra for the hardest end-to-end work.

Can I switch among GPT-6 Astra, GPT-6 Luna, and Sol in one conversation?

Yes. magicdoor.ai lets you switch models mid-conversation, so subscribers can move among Astra, Luna, and Sol without rebuilding the chat context.