Custom AI vs. SaaS AI
Custom AI and SaaS AI represent two ends of a build-versus-buy spectrum. SaaS AI is a vendor's model behind a vendor's interface—ChatGPT Enterprise, Jasper, Writer—where you get speed to deployment but inherit someone else's architecture, limitations, and roadmap. Custom AI is a system built for your specific data, workflows, and success criteria, typically combining foundation models with proprietary retrieval layers, custom evaluation pipelines, and interfaces designed for your users. The tradeoff is real: SaaS AI ships in days, custom AI ships in weeks or months. But SaaS AI gives every competitor the same capability, while custom AI can become a durable advantage. The right answer depends on whether the AI capability you need is a commodity or a differentiator. Email summarization is a commodity—buy it. A system that underwrites insurance risk using your proprietary claims data is a differentiator—build it.
Related terms:
WWGPTD
WWGPTD began as internal Slack shorthand to remind teams that using AI isn’t cheating but the essential first step. It reframes strategy by asking how AI.
Transformer
The transformer is the neural network architecture introduced in Vaswani et al.’s “Attention Is All You Need” that replaces recurrence with parallel...
System Prompt
A system prompt is an invisible set of instructions given to a language model—defining its persona, constraints, output format, and behavioral rules—and...