TL;DR: If you are replacing Bayes, the closest options are Lightwell, Hey Healthcare, Tremor. The table below compares 12 alternatives on what they do, stage, size and status.
Every alternative below is compared on what it actually does, not just its category — so you can see which one genuinely replaces Bayes (YC Summer 2019).
Last verified:
The three closest alternatives to Bayes are:
| Alternative | What it does | Stage | Team | Status |
|---|---|---|---|---|
| Lightwell | — | YC Summer 2019 | 4 | Inactive |
| Hey Healthcare | — | YC Summer 2019 | 1 | Inactive |
| Tremor | The UI toolkit for Dashboards | YC Summer 2023 | 2 | Acquired |
| Eivod | — | YC Summer 2007 | 51 | Inactive |
| Swayable | Swayable predicts consumer opinion and the impact of content | YC Winter 2018 | 30 | Active |
| Vellum | — | YC Winter 2023 | 23 | Active |
| Operand | — | YC Winter 2025 | 8 | Active |
| camelAI | Unlimited inference at $5 per stream | YC Winter 2024 | 3 | Active |
| Zelos Cloud | The Data Platform for Mission‑Critical Systems | YC Summer 2023 | 3 | Active |
| Plutis | — | YC Winter 2023 | 2 | Active |
| Metofico | No Code Data Analysis for Life Science Research | YC Winter 2024 | 2 | Active |
| renderlet | Build interactive applications that run anywhere | YC Winter 2024 | 2 | Active |
It depends on your size. Lightwell is the closest match on what Bayes actually does. If you need something more established, sort the table by team size — larger teams generally mean more support and a longer track record. If budget is the constraint, the earlier-batch companies are usually the ones still competing on price.
Bayes has been acquired, which often means pricing, roadmap or support changes. That is the usual reason people start looking at this list.
Every company here is Y Combinator-backed and was matched to Bayes on what it actually does — its own description of its product — rather than on a broad category label. Batch, team size and operating status come from the YC directory and are shown as-is. We do not rank by payment.
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