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AI app two-sided marketplace for booking speakers. Organizers, podcasters, journalists find speakers, podcast guests & expert sources in hours. Free iOS + Android. No commissions. Built-in Growth Marketplace with member discounts

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.
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| Website | speak-up.pro | diffyn.com |
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| Company | Startup from the United States · 1 - 9 employees · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


SpeakUp is the AI-powered, two-sided speaker booking marketplace - connecting event organizers, podcasters and journalists with speakers, podcast guests and expert sources in hours, with no agencies and no commissions. Instead of speaker bureaus (10–30% commission) or endless manual search,...
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.


Overall verdict
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Overall verdict
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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 SpeakUp AI and Diffyn.
SpeakUp AI's answer
SpeakUp is the first AI-powered, two-sided speaker booking marketplace. No speaker bureau or call-for-speakers tool offers AI matching — SpeakUp does, learning from real booking outcomes. What makes it unique:
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.
SpeakUp AI's answer
Speaker bureaus charge 10–30% commission and show a few hundred speakers. SpeakUp gives you 100,000+ verified speakers across 28+ countries and 9 languages with zero commission — the price you agree with the speaker is what you pay.
Faster (matches in 1 hours, not weeks 3), cheaper and broader - plus AI discovery inside ChatGPT and Claude via MCP.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
SpeakUp AI's answer
SpeakUp serves six audiences from one platform:
The core buyers are organizers, podcasters and journalists who need the right speaker fast, and speakers who want consistent worldwide opportunities.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
SpeakUp AI's answer
SpeakUp was founded in 2025 by Helen Kareva and Nick Zhuchkov to fix how the world finds speakers.
Booking a speaker used to mean paying bureaus 10–30% commission, waiting weeks, or doing endless manual search on LinkedIn. SpeakUp replaced that with an AI matching app: organizers post a request and get ranked, verified speakers in hours — no agencies, no commissions.
SpeakUp was featured on OSN's The Final Pitch: Dubai, where it became the only startup that season to secure a live investment agreement.
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.
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