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Whizi product docs: models, credits, plans and limits

Reference documentation for Whizi: the model list by plan, the full credit scale, every price and limit, supported file types, billing and data handling.

Reference

Whizi FAQ: the questions people ask most: Short answers to the most asked Whizi questions: prices and the $0.99 trial, the 280+ model catalogue, credits, import, projects and privacy.
The Whizi models list: which AI models are included on each plan: Every AI model in Whizi, which plan unlocks it and what it costs in credits. GPT, Claude, Gemini, Grok, DeepSeek, Llama, Mistral, Kimi and Qwen in one plan.
How Whizi credits work: Whizi charges credits per message: 1 for the fast models, 20 for Claude Opus 5, 80 at the top. The full scale, plan allowances, and what each tier buys.
Whizi plans, prices and limits: Whizi pricing and limits in one page: Starter, Pro and Powerhouse monthly and yearly prices, credit allowances, media quotas, and what the $0.99 trial covers.
Whizi supported file types: what you can upload: Every file extension Whizi accepts: PDF, Word, spreadsheets, slide decks and 40 source code formats. What each converts to, and how long uploads are kept.
Billing, trials and how to cancel your Whizi subscription: How Whizi billing works: the 7 day $0.99 trial, monthly and yearly charges, cancelling on web versus through Apple or Google, and when plan changes take effect.
Does Whizi train on my data? Privacy, retention, and deletion: Does Whizi train on your chats? What happens to uploaded files, how long they are kept, what account deletion removes, and what is sent to model providers.
Whizi troubleshooting: fixing common problems: Diagnose and fix the common Whizi issues: locked models, empty PDF extraction, stale answers, credits running out, and a conversation that will not continue.
How Whizi Auto picks a model for each message: Auto sorts each message onto one of six fixed rungs and answers on the model pinned to it, never above your plan. The ladder, per-plan ranges and turn cost.
Does Whizi give refunds? What the Terms of Service say: The Whizi Terms contain no refund clause for a subscription bought on whizi.io. The only remedy described is cancellation at the end of the paid term.
Where does Whizi store my data? Servers, retention windows, and what a lapsed plan keeps: Whizi runs on Cloudflare, with Clerk for sign-in and Stripe for web payments. Where conversations, files and media live, and the retention window on each.
Does Whizi have a developer API?: Whizi has no public or developer API, no API keys and no personal access tokens. What the Terms say about scripting it, and the supported ways to move data.
Does Whizi have team or workspace plans?: Whizi has no seat-based plan, admin console or member list. Billing is per individual account. What sharing one login does, and the options a group does have.
Whizi invoices and receipts: where the record of your payment lives: Whizi has no invoice download or billing history screen. Stripe processes web payments, Apple or Google hold store purchases, and what each charge matches.
How to delete your Whizi account, and exactly what is removed: Where the delete control lives, what account deletion removes item by item, what is kept and why, and how to export your data before you start.

Models in Whizi

Using GPT in Whizi: models, credit costs and plans: The GPT models in Whizi: credit cost and plan gate for each row Whizi prices, context windows for the eight in the Cost Index, and what an allowance buys.
Using Claude in Whizi: models, credit costs and plans: The Claude models in Whizi with credit cost, plan gate, context window and cost per answer. Sonnet and Haiku on Pro, the Opus class on Powerhouse.
Using Gemini in Whizi: models, credit costs and plan gates: The Gemini rows in Whizi, with credit cost per message, the plan required, context window and cost per answer, plus how to skip a separate Google subscription.
Using DeepSeek in Whizi: models, credit costs and plan access: Which DeepSeek models are in Whizi, what each costs in credits per message, which plan unlocks it, and the context window and token budget for each row.
Using Grok in Whizi: models, credit costs and plan gates: The Grok rows in the Whizi price index with credit cost, plan gate, context window and cost per standard answer. What Pro reaches and what needs Powerhouse.
Using Qwen in Whizi: which models, what they cost, which plan: The Qwen rows in the Whizi Cost Index, with credits per message, context window and cost per answer. Which plan reaches which row, and what Starter omits.
Using Kimi in Whizi: which models, what they cost, which plan: The Kimi models in Whizi, the credits each message costs, which plan unlocks which model, and the context window and per-answer cost of each Cost Index row.
Using GLM in Whizi: one row on Pro, the rest on Powerhouse: The GLM models Whizi prices, with credit cost per message and the plan that unlocks each one. GLM 5 is on Pro, the rest are Powerhouse.
Using Llama in Whizi: models, credit cost and plan: Which Meta Llama models Whizi includes, the credit cost per message, the plan gate, the context window, and what Llama is not used for inside Whizi.
Using Mistral in Whizi: models, credit costs and plan gates: The Mistral rows in Whizi: credits per message, the plan that unlocks each, context windows and cost per answer. Pro reaches four, the rest need Powerhouse.
Context windows compared: what the priced models in Whizi can hold: Context windows from 8,192 to 1,310,720 tokens across the 100 rows in the Whizi Cost Index, plus the flat 40,000 token input budget every model gets per turn.
The cheapest AI models per answer in Whizi, and what one credit buys: The cheap end of the Whizi cost index: cost per standard answer, context window, credit charge, and the plan that unlocks it. Plus what one credit buys on each.

Fix an error

A model is unavailable in Whizi: greyed out, missing, or erroring: Why a Whizi model is greyed out, missing from the picker or failing mid-answer. Which tier opens which models, and the error string for each of the causes.
A Whizi message will not send, or the reply never arrives: Why a Whizi message fails to send or the reply stops mid-stream. The verbatim error strings, their HTTP codes, the trigger condition for each, and the fix.
Out of credits in Whizi: what happens, and when they reset: What Whizi does when your credits run out: the error string quoted, its HTTP code, why a turn is refused whole, and the UTC boundary that resets the allowance.
A file upload was rejected or failed in Whizi: Attachments must be 10 MB or smaller, unsupported file type, extension mismatch, upload rate limit reached. Every Whizi upload error, its trigger and its fix.
Image generation failed in Whizi: every error and its fix: Why image generation fails in Whizi. Every verbatim error string, the condition behind it, whether your allowance was refunded, and what to do next.
Cannot log in to Whizi, or the session keeps expiring: Invalid or expired session token, login failed, account sharing limit reached. Every Whizi access error quoted, with its HTTP code, trigger condition and fix.
Card declined or payment failed at Whizi checkout: Card declined at Whizi checkout? The decline comes from your bank through Stripe, not from Whizi. Every checkout error Whizi returns, with its trigger and fix.
You paid for Whizi but the plan features are still locked: Paid for Whizi and the features are still locked. The error strings quoted, what 402 versus 403 tells you, and how to find which account holds the subscription.
The conversation or document is too long for the model: Every Whizi length refusal quoted: the 100,000 character message cap, the 100 message cap, the 32,000 character system prompt cap, and the token budget.
Web search not working in Whizi: why it did not run: Web search on but nothing searched? Whizi sends a probe tool first and only runs a real search when the model calls it. Every error string, trigger and fix.
Whizi voice mode not working: every error and its fix: Microphone access is blocked. The realtime voice connection failed. Monthly voice minutes used up. Every Whizi voice error, its source, and what clears it.
Whizi chat import errors: why a ChatGPT or Claude import is rejected: That file is not a ChatGPT or Claude export. There is no conversations.json inside that zip. Every Whizi import error quoted, its trigger and its fix.
Whizi rate limits: the numbers, the errors, and what to do: The exact Whizi rate limits: 10 chat messages a minute, 60 an hour, 30 requests a minute across all routes. Every rate limit error quoted, with trigger and fix.

Guides

How to use Whizi: getting started: Set up Whizi in twenty minutes. Choose a plan and a default model, upload a document, compare two models on real work, and learn what to route where.
How to chat with a PDF online in Whizi: Upload any PDF to Whizi and chat with it using Claude, Gemini, or GPT. Step-by-step guide with screenshots and prompt ideas that actually work.
How to compare AI models side by side in Whizi: Step-by-step guide to Whizi's compare view: one prompt, two models in two columns, and how to judge the outputs. Powerhouse feature, billed per model.
How to switch AI models mid-conversation in Whizi: Change models inside a single Whizi chat. Use GPT for structure, Claude for tone, and Gemini for research without losing any context.
How to generate images inside a Whizi chat: Generate images inside a Whizi chat with Whizi Image, Nano Banana, Flux, or Stable Diffusion. Plan limits, prompt structure, and iteration.
How to upload documents to AI in Whizi: Upload PDFs, Word, Excel, images, and code files to Whizi and chat with them using Claude, GPT, or Gemini. Step-by-step guide and best practices.
AI chat with web search: how Whizi gives models live sources: Web search in Whizi is on by default, so Claude, GPT, Gemini and the rest answer from current sources. How it decides when to search, and when to switch it off.
AI voice conversations in Whizi: how voice mode works: How voice mode works in Whizi, the voice minutes each plan includes (10 on Starter, 80 on Pro, 500 on Powerhouse), and where the transcript goes afterwards.
How to share an AI conversation link from Whizi: How to share a Whizi chat as a public link, what a recipient sees, whether they need an account, and how to revoke the link afterwards.
The Whizi mobile app: iPhone, iPad and Android: How the Whizi iOS and Android apps work, what is shared with the web app, how credits count across devices, and where to cancel a store subscription.
How to generate Excel, Word, and other real files with AI in Whizi: How to get a real Excel spreadsheet or Word document out of an AI conversation in Whizi, download charts as images, and preview generated HTML before using it.
How to import your ChatGPT chat history into Whizi: Export your data from ChatGPT, then import conversations.json from Settings under Account. What carries over, and why the export never leaves your browser.
How to import your Claude chat history into Whizi: Whizi imports a Claude export from Settings under Account. Pick conversations.json, what is dropped, the per request caps, and why a second run is safe.
How to use Projects in Whizi: Create a Whizi project, pin up to 10 files and set instructions for every chat in it. The caps, how project context is folded in, and what it cannot do.
Regenerate a response in Whizi, and edit a message you already sent: Whizi has no regenerate control. Edit your message and resend: the reply is replaced, the old turn is kept as a version, and the resend is charged.
Write and debug code with multiple models in Whizi: The coder-named rows in the Whizi catalogue with their credit cost and plan gate, how to get source files into a chat, and the constraints on iterating on code.
Can you use Whizi offline?: Whizi has no offline mode: answers come from providers and chats live on the server. What the mobile app keeps locally, and what a dropped connection does.
Changing the email address on your Whizi account: No setting in Whizi changes your account email. What you can change yourself, the support route the Terms name, and why a second account moves nothing over.
Whizi memory: what it remembers across your chats: How Whizi memory works: the durable facts it keeps, the rules that decide what gets stored, the 2,000 token ceiling, and the clear controls in Settings.
How to contact Whizi support: Whizi support is [email protected], the support page and the in-app feedback form. What to include, which error strings to paste, and what only it can do.
How to check your credit balance in Whizi: Open Settings and read the Usage card: credits remaining out of your plan allowance, price per message in the picker, and the free daily allowance.
How to reset your Whizi password: Forgot password on the Whizi sign-in page emails a sign-in link, the mobile app emails a 6-digit code, and starting from Settings signs you out first.
How to organize conversations in Whizi: rename, delete, search and projects: How to rename and delete chats, what the sidebar search actually matches, and how projects work as folders with pinned files and their own instructions.
How to search your chat history in Whizi: The sidebar search matches chat titles as you type and searches message text from three characters, with snippets, up to 20 matches, and one search across projects.
Can you fork a conversation in Whizi?: Whizi has no fork or duplicate control, and a conversation holds one active branch. What edit and resend, projects, and a new chat each carry over.