TL;DR: If you are replacing Sixtyfour, the closest options are Operand, Holy Grail, Plutis. 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 Sixtyfour (YC Spring 2025).
Last verified:
The three closest alternatives to Sixtyfour are:
| Alternative | What it does | Stage | Team | Status |
|---|---|---|---|---|
| Operand | — | YC Winter 2025 | 8 | Active |
| Holy Grail | — | YC Summer 2019 | 7 | Active |
| Plutis | — | YC Winter 2023 | 2 | Active |
| Demospace | — | YC Winter 2023 | 2 | Inactive |
| Hey Healthcare | — | YC Summer 2019 | 1 | Inactive |
| Spice Data | Restaurant Data for the Enterprise | YC Summer 2019 | — | Active |
| David AI | Data for audio AI | YC Summer 2024 | 10 | Active |
| Bland AI | The enterprise platform for AI phone calls | YC Summer 2023 | 65 | Active |
| Trellis AI | Accelerate Medication Access with AI | YC Winter 2024 | 34 | Active |
| Iron Leap | Enteprise AI | YC Winter 2022 | 5 | Active |
| DeepGrove | Frontier Intelligence. On Any Device. | YC Summer 2025 | 3 | Active |
| PetaSales | — | YC Winter 2009 | 2 | Inactive |
It depends on your size. Operand is the closest match on what Sixtyfour 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.
Sixtyfour is still operating, so switching is a choice rather than a forced migration. Compare on fit and price rather than urgency.
Every company here is Y Combinator-backed and was matched to Sixtyfour 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.
Looking to save on B2B tools? Browse our vetted lifetime SaaS deals from verified vendors.
Built by LemStudio
Loading interactive view…