TL;DR: If you are replacing Zettascale, the closest options are Boost Biomes, ThereCraft, Dipole Labs. 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 Zettascale (YC Summer 2024).
Last verified:
The three closest alternatives to Zettascale are:
| Alternative | What it does | Stage | Team | Status |
|---|---|---|---|---|
| Boost Biomes | — | YC Summer 2019 | 12 | Inactive |
| ThereCraft | — | YC Summer 2017 | 1 | Active |
| Dipole Labs | AI-controlled optical switching for AI clusters | YC Summer 2026 | — | Active |
| Atum Works | Gigascale Nanomanufacturing | YC Spring 2025 | 3 | Active |
| deepsilicon | Software and hardware to run neural networks faster and cheaper | YC Summer 2024 | 2 | Inactive |
| StableBrowse | Building the Data Infrastructure layer for Physical AI. | YC Spring 2026 | 3 | Active |
| Apollo Atomics, Inc. | We make the most compact nuclear reactors | YC Spring 2026 | — | Active |
| General Instinct | Inference Infrastructure for Physical AI | YC Spring 2026 | 2 | Active |
| Starcloud | Data centers in space | YC Summer 2024 | 12 | Active |
| Talos | Predictive maintenance for power infrastructure. | YC Fall 2026 | 3 | Active |
| Madrone | Hyper-efficient coolers for data centers | YC Spring 2026 | 2 | Active |
| Atomarine | Floating nuclear powered data centers at sea. | YC Summer 2026 | 2 | Active |
It depends on your size. Boost Biomes is the closest match on what Zettascale 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.
Zettascale 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 Zettascale 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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