Synthetic

Synthetic is a fully autonomous AI bookkeeper aimed at software and SaaS startups, starting from around $49 a month, and backed by a $10M seed round led by Khosla Ventures.

What it does well, on the evidence so far: it targets a specific niche, SaaS and software startups, with autonomous bookkeeping at a price point far below a human bookkeeper or full-service firm. The narrow focus means the AI can be tuned to the patterns of that one business type, and the backing signals serious intent.

Where to be cautious: it is early-stage, so independent user reviews are very limited, and autonomous bookkeeping at this price needs real scrutiny on accuracy before you trust it with the books. The niche focus also means it is not a fit for non-SaaS businesses.

Best for: early-stage software and SaaS startups that want low-cost, automated bookkeeping and are willing to be early adopters.

Verdict: an interesting, cheap entry point to autonomous bookkeeping for the SaaS niche it serves, with credible backing. Because it is new and fully autonomous, keep a close eye on accuracy in the first few months and treat it as a tool to verify, not yet to fully trust unattended.