---
id: "claim-ai-tutor-efficiency"
type: "claim"
source_timestamps: ["\\\"§ In Pursuit of Personalization and Efficiency", "at Scale\\\""]
tags: ["efficiency", "time-to-competency", "self-paced-learning"]
related: ["concept-gen-ai-tutor", "entity-bcg-henderson-institute"]
confidence: "high"
testable: true
verification: "Efficiency-and-preference pattern strongly supported by external RCTs (physics, Brookings); the specific 23%/53% BCG figures not independently confirmed."
speakers: ["Sagar Goel", "Shubhankar Sohoni", "Lisa Krayer"]
sources: ["reskilling"]
sourceVaultSlug: "hbr-seg-reskilling"
originDay: 10
articleStem: "hbr-cl-86-genai-transform-l-and-d"
sourceUrl: "https://hbr.org/2025/09/how-gen-ai-could-transform-learning-and-development"
sourceTitle: "How Gen AI Could Transform Learning and Development"
---
# Gen AI Tutors Increase Learning Efficiency by 23%

## Claim: Gen AI Tutors Increase Learning Efficiency by 23%

**Confidence: HIGH · Testable: YES**

The [[entity-bcg-henderson-institute-d10]] experiment demonstrated highly efficient, **self-paced learning**. Participants using the [[concept-gen-ai-tutor]] spent **roughly 23% less time** completing the training program than peers in the classroom control group, **while achieving similar learning gains.** After just **one interaction, 53% of participants preferred the Gen AI tutor** over classroom learning.

**Note the boundary:** this preference is not universal — see the [[question-complex-teaming-skills]] open question, where participants still preferred *human* tutors for complex teaming and collaboration in peer groups.

**Enrichment / verification:** The pattern (less time, equal-or-better learning, strong learner preference) is **strongly supported externally**. An NIH-published physics RCT found students 'learn significantly more in less time' with an AI tutor than with in-class active learning — median completion ~49 minutes vs. a 60-minute session, with median learning gains more than double and 83% saying AI explanations were as good as or better than human instructors. Brookings' synthesis reaches the same conclusion. The **specific 23% / 53% BCG numbers are not independently visible** in public snippets but are consistent with the broader evidence base.