Within China’s K12 onl...
Within China’s K12 online education sector, one brand is virtually synonymous with photo-based question searching: Zuoyebang.
This edtech firm originated as an internal incubation project at Baidu in 2014 and spun off into an independent company in 2015, evolving into a nationwide leading AI-powered smart learning platform. According to public statistics, the Zuoyebang App has accumulated over 800 million total users, once hitting 80 million monthly active users. Its question bank stores more than 1.9 billion items covering all grades and subjects from primary to senior high school. It can be said that 7 out of every 10 primary and secondary school students have used Zuoyebang.
Zuoyebang’s core diffe...
Zuoyebang’s core differentiated advantage lies in its capability to deeply integrate self-developed large language models into the full learning workflow. Its proprietary educational large model claimed the top average score on two authoritative evaluation benchmarks, C-Eval and CMMLU. It also passed the Trustworthy AI Education Large Model Assessment by the China Academy of Information and Communications Technology (CAICT), receiving the highest Level 5 rating available. This model has been fully deployed across the Zuoyebang App and its smart learning machine product line, delivering industry-leading performance across full-subject homework grading, multimodal problem solving, knowledge Q&A, Chinese and English composition writing, and AI study companionship.
On its mobile App, Zuoyebang has built a full-chain AI tool matrix spanning the complete learning cycle: learning – practice – assessment – evaluation. Its AI intelligent Q&A function supports single-question scanning, full-page scanning, and essay photo lookup. Detailed explanations pop up instantly from the 1.9-billion-item question bank; the AI can proactively follow up on weak knowledge points and recommend related learning materials. The AI one-click full-subject homework grading tool covers mental arithmetic correction and essay marking, paired with original-question video breakdowns to precisely pinpoint knowledge gaps. For college entrance exam candidates, the AI college major application planner generates balanced “reach / match / safety” university options using official admission data, ensuring every point earned counts. For AI writing assistance, the platform aligns perfectly with K12 Chinese curricula, supporting full essay drafting, English composition, and opening/conclusion generation, alongside six-dimensional grading rubrics for written work. Furthermore, over 93% of questions are matched with recorded teacher lecture videos via intelligent AI matching of identical or similar exercises.
In July 2025, Zuoyeban...
In July 2025, Zuoyebang launched its new-generation AI learning machine P50, extending large model capabilities from software into dedicated hardware. The flagship built-in function AI Super Teacher leverages voice-driven multimodal interaction and massive student learning data to deliver systematic multi-dimensional learning diagnostics, personalized study roadmap planning, and unified resource scheduling across the entire device ecosystem. The AI Super Teacher generates dynamic 1–2 week study schedules and adjusts daily tasks based on real-time completion records, closely simulating the instructional logic and feedback loops of a human teacher. It effectively resolves five common household learning pain points: failing to identify weak subjects, lacking effective improvement methods, and feeling overwhelmed by excessive learning resources. Per data from Luo Tu Technology, Zuoyebang ranked No.1 in national smart learning machine sales volume in 2024, and claimed both sales volume and revenue championships in Q1 2025.
Beyond AI Super Teacher, the P50 device introduced two intelligent exercise modules: AI Targeted Practice and AI Mastery Training. Built on in-depth analysis of new curriculum standards and exam syllabi plus upgraded knowledge graph technology, these functions accurately assess each student’s proficiency and weak knowledge areas. They automatically filter mastered content and intelligently assign high-frequency, high-value, level-matched unseen exercises, forming a truly efficient, customized practice planning system. In terms of content resources, the P50 carries a 2.4-billion-item question bank and over 6 million authentic exam papers, with its curriculum system expanded into nine core subject tracks and ten gold-standard practice series. To align with updated textbooks, the production team newly recorded synchronous in-school courses compatible with 295 textbook versions. Each lesson runs 10–20 minutes, blending lectures, practice drills, and interactive quizzes.
Zuoyebang’s developmen...
Zuoyebang’s development trajectory reflects its full evolution from a single utility tool to a comprehensive integrated platform. Following its spin-off in 2015, the company completed multiple financing rounds backed by top-tier investors including Sequoia Capital, GGV Capital, Tiger Global Management, and SoftBank Vision Fund. It expanded from a basic photo search tool to live-stream tutoring brand Zuoyebang Yike (later rebranded Zuoyebang Live Classes), and now AI large model-enabled learning hardware. Step by step, Zuoyebang constructed a complete ecosystem combining tools, educational content, smart hardware, and one-on-one services. Founder Hou Jianbin once stated that Zuoyebang’s North Star metric is revenue, with its growth formula structured as: New Users × Conversion Rate × Average Revenue Per User + Retained Users × Renewal Rate × Average Revenue Per User.
For its business model, Zuoyebang adopts a dual growth engine: freemium mobile App services + one-time hardware sales. Core App features including photo question scanning and basic grading remain permanently free for all users. VIP membership unlocks premium perks such as unlimited video explanations, exclusive Q&A priority, and downloadable exam papers, priced at 19 RMB per month for auto-renew subscriptions. Smart learning machines are sold via one-time upfront purchase with lifetime free content updates. Notably, Zuoyebang Live Classes boasts exceptional organic conversion efficiency: over 67% of new paid students during the 2020 summer semester came from internal App traffic, with customer acquisition costs less than half the industry average.
In terms of industry r...
In terms of industry recognition and official credentials, Zuoyebang has been repeatedly covered by authoritative media outlets including CCTV, People’s Daily, and Xinhua News Agency. Its educational large model holds CAICT’s highest Level 5 trustworthy AI certification, and its learning machines consistently top national sales rankings. Beyond core K12 tutoring, Zuoyebang expanded its education portfolio with children’s online English brand Raccoon English to broaden its market footprint. Whether you are a student stuck on tricky homework problems, a parent seeking simpler after-school tutoring support, or a frontline teacher requiring efficient assignment grading tools, this all-in-one learning platform powered by AI large models, a 1.9-billion-item question bank, and dedicated smart hardware is well worth downloading — it will completely redefine how efficient learning can be.