Can AI really replace SaaS?

We asked Codex Spark to build a simple Salesforce clone. It generated a build plan, then wrote all the code in 29 seconds.

And it works! Add contacts, live search, full pipeline dashboard – all unit tests passed.

The same task on full Codex took… pic.twitter.com/uMuNTnjYpA

— Cerebras (@cerebras) 8 avril 2026

Can AI really replace SaaS? We asked Codex Spark to build a simple Salesforce clone. It generated a build plan, then wrote all the code in 29 seconds. And it works! Add contacts, live search, full pipeline dashboard – all unit tests passed. The same task on full Codex took

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