Pick the plan by the model you cannot do without
The plans differ mainly in model access, so the fastest way to choose is to name the one model you would be annoyed to lose.
If that model is Claude, you need Pro at minimum, because Starter includes no Anthropic model at all. If it is Claude Opus specifically, you need Powerhouse. If you have no strong opinion and mostly want a fast assistant that can read your documents, Starter is genuinely enough and costs $10.99 per month billed yearly.
Every plan starts with a 7 day trial for $1, and upgrading takes effect immediately, so starting one tier low and moving up mid-trial costs nothing. Full numbers are in plans and limits.
Set a cheap default model
This is the single setting that decides whether your allowance lasts the month. Roughly half the catalogue costs 1 credit per message, and those models are genuinely good at the majority of what anyone sends: lookups, rewrites, summaries, formatting, quick explanations.
Make one of them your default. Whizi AI, GPT-5.6 Luna and Gemini 3 Flash are all 1 credit. Then reach for the expensive tier deliberately, on the handful of messages per week that decide something. A Pro subscriber who defaults to Claude Sonnet 5 at 10 credits will burn 2,000 credits in 200 messages; one who defaults to a 1 credit model and switches up when it matters will not run out.
Every row in the model picker shows its credit cost before you send, so the price is never a surprise afterwards.
Upload something you are actually working on
The fastest way to find out whether this is useful is to give it real work rather than a test question. Drag a PDF, a Word document or a spreadsheet straight into the chat window. Upload is on every plan and costs no credits.
Then ask something you genuinely want to know, not something you already know the answer to. Testing an AI on questions you can already answer measures the wrong thing, and it is why so many trials end with a shrug.
Spreadsheets are worth trying early because the difference from a general chatbot is largest there: cell contents are extracted as structured data rather than flattened into prose. The full format list is in supported file types.
Run one honest comparison
Take a task that matters and send it to two models. On Powerhouse you can do this in parallel with side-by-side; on any plan you can do it sequentially by switching models in the same conversation.
Decide what better means before you read either answer, because longer and more confident outputs are systematically preferred even when they are worse. Write one sentence describing what a good answer would contain, then read.
What most people find is that on the majority of their work the models are interchangeable, and on a minority the gap is large. Finding out which is which is the entire point of the exercise, and it takes about a week. See comparing models side by side.
Write down your routing and stop deciding
The failure mode of a workspace with 280 models is spending your attention on model choice instead of on work. The fix is to decide once and then stop.
A routing map that works for most people looks like three lines: a 1 credit default for everything routine, one strong model for writing and reasoning that matters, and one large-context model for documents. That is it. Three decisions, made once, and then model selection stops being a thing you think about.
Revisit it when a provider ships something new, which is roughly monthly, not daily.
- Choose the plan by naming the one model you cannot do without
- Starter includes no Anthropic model, so Claude means Pro at minimum
- Set a 1 credit model as your default
- Upload real work, not a test file
- Ask questions you do not already know the answer to
- Run one comparison with the criterion decided in advance
- Write down a three line routing map and stop re-deciding
Frequently asked questions
Do I need to cancel ChatGPT Plus before trying Whizi?
No, and it is better not to for the first week. Run both in parallel during the $1 trial and send the same real tasks to each, because that comparison is the only reliable way to find out whether a metered multi-model allowance suits your work better than unlimited use of one model. Cancel whichever one loses at the end of the week.
Can I import my ChatGPT conversation history?
There is no import, and in practice this matters much less than people expect. Conversation history is rarely re-read; what carries over is the prompts you found that work, and those are worth pasting into a template rather than migrating wholesale. Starting clean also avoids dragging a year of half-finished threads into a new tool.
How long does it take to set up?
Registering and sending a first message takes under two minutes, since there is nothing to install on the web and no configuration. The twenty minutes in this guide is the part that actually determines whether you keep using it: setting a cheap default, uploading real work, and deciding your routing.
What is Whizi AI, and should I use it as my default?
Whizi AI is the house assistant. It runs on GPT-5.6 Luna with a Whizi system prompt on top, costs 1 credit per message, and is available on every plan including Starter. It is a reasonable default for exactly that reason. If you would rather have no persona layer, the raw GPT-5.6 Luna is offered separately in the full model list at the same 1 credit price.