What platforms does MF0.ai support?

MF0.ai is available on Web App.

What are the limitations of MF0.ai?

Fusion and Ultra runs cost roughly $0.50 to $1.50 each and cannot be stopped once started. Per-request billing makes monthly cost less predictable than a flat subscription. Many settings and modes (memory optimization, light and priority models) create a learning curve.

MF0.ai

Name: MF0.ai
Author: MF0.ai

Pay-per-use chat that puts ChatGPT, Claude, Gemini and Grok in one place

Intermediate

Visit MF0.ai Back to AI tools

Screenshot of MF0.ai, Pay-per-use chat that puts ChatGPT, Claude, Gemini and Grok in one place

What is MF0.ai?

MF0.ai is a pay-as-you-go multi-model chat that combines ChatGPT, Claude, Gemini, Grok and Perplexity, with side-by-side answers, a persistent memory graph, and image, video and voice tools.

MF0.ai is a web-based chat workspace that brings several leading language models into a single conversation window. ChatGPT, Claude, Gemini, Grok and Perplexity sit alongside models such as Kimi, Seed, GLM, Qwen and NVIDIA options, and a user can switch between them mid-thread while attachments and context carry over. Instead of a monthly plan, the platform bills per request from a topped-up balance, and its landing page cites a typical monthly spend of about $13 against roughly $100 for five separate subscriptions. The comparison angle is the core of the product. An "AI opinion" mode sends one prompt to every connected model at once and shows the answers side by side with a short combined summary, which suits cross-checking translations, documents or decisions. Fusion mode runs several models in parallel on a research topic, verifies the facts and merges the results into a long-form article, while Ultra mode splits a large task into subtasks handled by different models. Both run in the background and carry stated per-run costs. Beyond text, the interface covers image generation, video from text, images or existing clips, voice replies, dictation and live voice conversation, plus programming, deep research and web search modes. A Memory Tree turns facts, people and events from past chats into a personal knowledge graph, and the Digital Brain feeds that graph into every model's replies. Users can also set personal rules, a chat persona, a PIN lock on sensitive sections and an encrypted profile backup. MF0.ai fits people who currently juggle several AI subscriptions and want usage-based billing plus side-by-side model comparison. It is closer to a multi-model aggregator than to a single assistant, and its depth of settings and modes suits users comfortable with some configuration. Sign-in is offered through Google, Discord, GitHub or an emailed link, and the interface is available in about twenty languages.

How do you use MF0.ai?

1Sign in to MF0.ai
Open the site and sign in with Google, Discord or GitHub, or request an emailed sign-in link.
2Top up your balance
Add any amount of credit, since usage is billed per request with no monthly fee. Check the payment history panel to track spending.
3Pick a model or ask them all
Choose Gemini, Perplexity, ChatGPT, Claude or Grok from the model selector, or choose AI opinion to query every model at once.
4Try Fusion, Ultra or Deep research
For larger tasks, select a multi-model mode from the input menu. Note the stated per-run cost before starting, since runs cannot be stopped.
5Set up memory and rules
Fill in the intro and rules sections, and enable Digital Brain so the Memory Tree informs replies. Add a PIN lock to protect sensitive sections.

Pros and cons

Pros

Sends one prompt to all connected models at once and shows answers side by side with a combined summaryAI
Usage-based billing to the cent with no monthly subscription, cited at about $13 typical monthly spendAI
Memory Tree and Digital Brain carry personal context across every modelAI
Covers text, code, images, video, voice, deep research and web search in one interfaceAI
Offers PIN locks, encrypted profile export and end-to-end encrypted friend chats for privacy controlAI

Cons

Fusion and Ultra runs cost roughly $0.50 to $1.50 each and cannot be stopped once startedAI
Per-request billing makes monthly cost less predictable than a flat subscriptionAI
Many settings and modes (memory optimization, light and priority models) create a learning curveAI
Image generation analysis adds a small extra processing cost to each image requestAI
No public pricing table, documentation or support pages are listed on the homepageAI

How much does MF0.ai cost?

Free trial

A free joke avatar generator is available without sign-up, with a daily limit. No free trial of the main chat is described.

Learn more

Pricing

No subscription. Users top up any amount and are billed to the cent per request. The homepage cites about $13 typical monthly spend versus $100 for five separate subscriptions, and Fusion and Ultra runs cost roughly $0.50 to $1.50 each.

Learn more

Support

An in-app product help chat answers questions about the app and its settings. Terms of Service and Privacy Policy pages are linked.

Integrations

Connects to models from ChatGPT, Claude, Gemini, Grok, Perplexity, Kimi, Seed, GLM, Qwen and NVIDIA. Sign-in works through Google, Discord, GitHub or email link.

Features

Multi-model chat, AI opinion across all models, Fusion and Ultra multi-model modes, deep research, web search, programming mode, image and video generation, voice replies and live voice, Memory Tree, Digital Brain, rules, PIN locks and encrypted profile backup.

Frequently asked questions about MF0.ai

How much does MF0.ai cost?
No subscription. Users top up any amount and are billed to the cent per request. The homepage cites about $13 typical monthly spend versus $100 for five separate subscriptions, and Fusion and Ultra runs cost roughly $0.50 to $1.50 each.
Does MF0.ai offer a free trial?
A free joke avatar generator is available without sign-up, with a daily limit. No free trial of the main chat is described.
How do you use MF0.ai?
The walkthrough on this page covers 5 steps: 1. Sign in to MF0.ai 2. Top up your balance 3. Pick a model or ask them all 4. Try Fusion, Ultra or Deep research 5. Set up memory and rules.
What platforms does MF0.ai support?
MF0.ai is available on Web App.
What does MF0.ai integrate with?
Connects to models from ChatGPT, Claude, Gemini, Grok, Perplexity, Kimi, Seed, GLM, Qwen and NVIDIA. Sign-in works through Google, Discord, GitHub or email link.
What are the limitations of MF0.ai?
Fusion and Ultra runs cost roughly $0.50 to $1.50 each and cannot be stopped once started. Per-request billing makes monthly cost less predictable than a flat subscription. Many settings and modes (memory optimization, light and priority models) create a learning curve.