In a nutshell
Letrus is an A.I. platform focused on the evolution of the students' writing skills. Through Letrus linguistic intelligence, textual patterns are identified and diagnostic analyses far beyond skills and spelling reveal great learning opportunities.
DIF I
BR
23.5558° S, 46.6396° W
(4) Quality Education,
(10) Reduced Inequalities
n/a
KPI's
Historical aggregate
Schools
1,211
(16% YoY)
Public
Schools
__
__
Active
Students
426k
(16% YoY)
Corrected essays with AI
7M
(94% YoY)
Positive Notes
Letrus expanded its reach significantly in 2025, increasing the number of students served by 90%, the vast majority within Brazil’s public school system. ENEM 2024 results showed record improvements in writing performance across all partner networks, with Espírito Santo once again ranking as the top-performing state public system in the country. These outcomes reinforce Letrus’ role in strengthening literacy at scale through AI-powered pedagogy.
The company also launched Escrevendo Futuro, a collaboration with Emicida and J-PAL that adapts Poor Economics by Nobel Laureate Esther Duflo for young students. Powered by Letrus’ technology, the initiative brings evidence-based, inspiring stories to public and private schools nationwide, reaching especially low-income students and connecting scientific research with classroom impact.
Scaling within Brazil’s public education system—where long sales cycles and complex procurement processes can slow expansion—remains a key challenge. Deepening pedagogical impact while broadening adoption across municipal networks will be essential to sustaining growth and advancing equity in learning outcomes.