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Affordable AI API gateway - cheap access to OpenAI, Anthropic, Google models through unified interface. Low cost alternative to direct API integration

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 | defapi.org | diffyn.com |
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In their own words, as submitted to SaaSHub.


Defapi is a premier API aggregation platform for AI models, giving developers a single point of access to world-class models from across the globe. Using Defapi, you can quickly plug into the newest capabilities from OpenAI, Anthropic, Google and other top vendors. Defapi streamlines AI adoption...
No description of Diffyn yet.
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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 Defapi.org and Diffyn.
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.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
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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Affordable DeepSeek R1 API with powerful reasoning and robust security.
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Enterprise AI API Gateway supporting GPT-5, Claude Sonnet 4.5, Gemini 2.5 and 50+ models. OpenAI compatible, 5-min migration, 99.9% SLA.
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One API to access all top AI models—video, image, audio, and text. Fast integration, 30–70% cost savings, high-performance, and developer-friendly.
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AI API marketplace: image generation, text processing, NLP & more. Easy integration, comprehensive documentation, reliable performance for developers.
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