
ChatGPT
Claude AI
Poe
OpenRouter
Typing Mind
Perplexity.ai
nanoGPT
Pay-per-use access to the major AI models, with no subscription

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | aifuse.app | diffyn.com |
| Pricing | ||
| Platforms | ||
| Company | Startup from Singapore · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


AiFuse puts the major AI models behind a single login and a single balance, so you are not paying a separate monthly fee for each one. You add credit and pay only for what you use. There are no plans, no seats and no monthly renewal. Credit does not expire, and the minimum top-up is $10. Every...
No description of Diffyn yet.
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


No analysis of AiFuse yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
No AiFuse videos yet. You could help us improve this page by suggesting one.
The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing AiFuse and Diffyn.
AiFuse's answer
Every message shows you which model answered and exactly what that message cost, down to fractions of a cent. Most tools charge a flat monthly fee and never show you the underlying cost of anything. AiFuse shows the rate on every model before you send, and the cost of every reply after. You add credit, you spend it, and nothing renews.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
AiFuse's answer
Because most alternatives ask you to pick one of two bad options: pay a monthly fee per provider, or bring your own API keys and assemble a client yourself. AiFuse is neither. One login, one balance, no keys to manage, and no subscription. You pay for what you use and the credit does not expire.
If you use AI heavily every day, a flat monthly plan will almost certainly cost you less, and we would rather say that than pretend otherwise. AiFuse is for people who use several models occasionally rather than one model constantly.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
AiFuse's answer
People who want access to models from several providers but do not use any single one enough to justify a monthly subscription for it. Writers, researchers, consultants, students, and anyone who switches between models depending on the task. Also people who simply want to see what their AI usage actually costs.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
AiFuse's answer
We were paying for several AI subscriptions at once and using none of them enough to justify the cost. Switching between them meant separate logins, separate windows, and copying text back and forth. The alternative was wiring up API keys ourselves, which works but is not something most people want to maintain.
AiFuse is what we wanted instead: one place, one balance, models from every major provider, and a visible price on every message. It is built and run by PlayIT Pte Ltd, a company based in Singapore.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
Share your experience with using AiFuse and Diffyn. For example, how are they different and which one is better?
When comparing AiFuse and Diffyn, you can also consider the following products.


Claude is a next generation AI assistant built for work and trained to be safe, accurate, and secure. An AI assistant from Anthropic.
Compare Claude AI to AiFuse or Diffyn:



