What differs
- Scale AI: capability and safety evaluations, expert red teaming with proprietary adversarial prompt sets, custom eval sets, and SEAL leaderboards.
- Surge AI: evaluations built around enterprise workflows, custom benchmarks before launch, production monitoring, and domain-expert grading; states pilot results within a week.
- Published security: Scale lists SOC 2 Type II, ISO/IEC 27001:2022, FedRAMP High, and DoD IL4; no certifications or trust page found for Surge AI.
- Ownership notes: Meta holds a minority of Scale’s equity after its June 2025 investment; Scale states it remains independent.
Who each tends to fit
Public-sector and certification-driven buyers may look first at Scale’s published security evidence. Enterprises wanting workflow-specific expert evaluation with a fast pilot may look at Surge. Both also sell training data, so ask how evaluation sets are kept separate.
Last checked: . No winner declared.