Inferact vs RadixArk
Which Infrastructure AI tool is better in 2026?
Inferact
Commercial inference engine from the creators of vLLM
RadixArk
Open infrastructure for frontier AI, built on SGLang
Side-by-side
Inferact is the more established option (raised $150M); pricing is comparable on both sides.
| Metric | Inferact | RadixArk |
|---|---|---|
| Taglinei | Commercial inference engine from the creators of vLLM | Open infrastructure for frontier AI, built on SGLang |
| Foundedi | 2025 | 2025 |
| HQi | San Francisco, US | San Francisco, US |
| Employeesi | 1-10 | 1-10 |
| Neuron scorei | 73🏆 | 72 |
| Total fundingi | $150M🏆 | $100M |
| Latest roundi | Seed · Jan 2026 | Seed · May 2026 |
| Valuationi | $800M🏆 | $400M |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✓ | ✓ |
| Free triali | ✗ | ✗ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Open source | Open source |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Inferact and RadixArk.
| Capability | Inferact | RadixArk |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✓ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Inferact
- Has raised more capital ($150M vs $100M)
- Higher Neuron score (73 vs 72)
🔵 Strengths of RadixArk
- Strong in AI Infrastructure
Which should you choose?
Choose RadixArk if price matters most — it starts at Open source, which is friendlier for teams watching burn. Both AI Infrastructure tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Inferact if you want the most established option — it has raised $150M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
Inferact vs RadixArk — which is better?
It depends on your priority. Inferact has raised more capital and is the more established option; RadixArk has broader feature depth. See the side-by-side table above.
Is Inferact cheaper than RadixArk?
No — RadixArk's cheapest paid plan is Open source, while Inferact's is Open source.
Do Inferact and RadixArk offer free plans?
Inferact: Yes, has a free plan. RadixArk: Yes, has a free plan.
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