Outcome-based pricing (OBP) in AI-powered SaaS, gaining traction in 2025, involves vendors charging customers based on specific, verifiable results rather than access or usage, facilitated by AI's ability to track outcomes in real time. This model strengthens customer trust by aligning costs with proven ROI, potentially increasing vendor margins and shortening sales cycles, though it introduces revenue volatility and requires reliable metrics. While OBP is particularly effective for discrete impacts such as fraud prevention or automated support, industries with ambiguous attribution may continue traditional pricing models. Hybrid pricing, combining base fees with performance bonuses, is emerging as a preferred strategy to balance risk and reward. Despite its benefits, OBP's success depends on robust data infrastructure and clear outcome definitions to avoid disputes and ensure stability, with modular billing systems like Lago aiding in implementation.