Providing Trusted Data Foundation
for Frontier AI
Langhui Technology — Frontier AI Data Infrastructure Provider. Built on Trusted Data, calibrated by Expert Wisdom, and safeguarded by a Compliance System, we deliver high-quality training data for large models, embodied AI, and Agentic AI.
Authoritative Qualifications · Compliance · Trusted
Three Core Businesses Building Frontier AI Data Infrastructure
Trusted datasets as the product, custom data services as the engine, and a certified expert network as the safeguard — three integrated modules delivering high-quality training data for frontier AI models.
Ready-to-Use Training Datasets
500TB+ of high-quality, de-identified, commercially-ready standardized datasets across six core sectors — healthcare, finance & legal, education, STEM, embodied AI, and general corpus. Compliant and ready for immediate model training.
Industrial-Grade Data Annotation
End-to-end annotation factory from collection to delivery, spanning computer vision, large models, and multimodal data. Three-tier QA plus expert final review ensures medical-grade precision.
Certified Expert Network
5,000+ certified experts across 22 professional domains. Four-stage admission review (acceptance rate <25%), AI-powered matching, 2-hour response — delivering the final layer of human-judgment validation for model training.
Foundational Tech Capabilities
Image & Video Collection
Scene-based image and video data collection across indoor/outdoor environments, multi-device, multi-angle, and multi-lighting conditions.
Speech & Audio Collection
Multi-language, multi-dialect, multi-scenario speech collection with targeted demographic and device adaptation.
Text Data Collection
Structured and unstructured text collection across multi-language, multi-domain, and multi-format sources.
Motion & Pose Data
Human pose and behavioral action data collection across multi-view and multi-action-type scenarios.
Deep Expertise Across Six Core Sectors
Built on trusted data, our three integrated businesses empower six core sectors — healthcare, finance & legal, education, STEM, embodied AI, and general corpus.
Healthcare
Core StrengthMillion-scale medical exam datasets + MVD surgical video annotation + Tier-3 hospital expert network, covering the full chain of imaging diagnostics, clinical decision support, and drug discovery.
Finance & Legal
Compliance-DrivenFinancial contract review datasets + legal document intelligent annotation + PE/VC due diligence experts, covering risk control, compliance, and contract review scenarios.
Education
All StagesEducation scenario datasets + subject knowledge annotation + education expert network, covering K12, higher education, and vocational training.
STEM
STEM ExpertsSTEM math problem production platform + physics/chemistry solution annotation + Master's/PhD experts from top universities, covering all difficulty levels from high-school olympiad to postdoctoral research.
Embodied AI
Frontier ScenariosRobot scenario data collection + motion behavior annotation + multimodal alignment, covering humanoid robots, industrial robotic arms, and service robots.
General Corpus
MultilingualMultilingual text corpus + multimodal data alignment + multilingual expert network, covering NLP, ASR, and multimodal alignment use cases.
Six Frontier AI Capabilities Covering Full-Stack Data Needs
From frontier model alignment to embodied AI, and from multimodal understanding to Agentic AI — Langhui powers next-generation AI system training with specialized data capabilities.
Frontier Model Alignment
CoT reasoning trajectories, expert RLHF, SFT demonstration data, and adversarial red-teaming — providing human-wisdom alignment for the world's frontier large models.
Agentic AI
Golden trajectory data, reinforcement-learning environment design, failure-mode classification, and SWE deep evaluation — empowering autonomous agent development.
Audio & Speech
Expressive TTS synthesis, emotion detection, multi-dialect speech, and paralinguistic annotation — covering 500+ global languages and dialects.
Multimodal LLM
Fine-grained VLM training data, image-text contrastive alignment, spatiotemporal video annotation, audio-video alignment, and structured document annotation.
Embodied AI / Physical AI
LiDAR point-cloud annotation, multi-camera sensor fusion, robot demonstration trajectories, world-model reasoning, and embodied interaction logs.
Model Eval & Safety
Hallucination benchmarks, compliance audits, bias detection, and continuous monitoring — ensuring your AI models remain safe and trustworthy.
Deep Roots in Data, Continuously Innovating
Years of expertise — from traditional data annotation to frontier AI data infrastructure, Langhui continues to lead the industry's evolution.
Focused on AI Data Services
Expert Network Established
NLP Corpus Breakthrough
5,000+ Certified Experts
Embodied AI Launched
Agentic AI + Physical AI
What Our Clients Say
Authentic feedback from partners in medical AI, architectural design, large-model R&D, and beyond.
"The medical imaging dataset Langhui delivered far exceeded our expectations, with annotation precision reaching clinical-grade standards. After training our pulmonary nodule detection model on their data, our AUC improved by 12 percentage points."
"We've partnered with Langhui on a three-year pathology slide annotation project. The chief physicians matched through their 5,000+ expert network provide professional-grade reviews for every WSI. This level of quality is exceptionally rare in the industry."
"Langhui's STEM math problem platform supplied high-quality training data for our reasoning model — our score on the MATH benchmark improved by 15%, far surpassing results from other data sources."
Latest News
Data as Foundation, Intelligence as Bridge, Healthcare as Scenario — Langhui AI Breaks Through Data-Medicine Integration with Trusted Medical Datasets
Recently, an industry conference themed "Pathways for Data-Medicine Integration" drew wide attention. As an AI data infrastructure provider, Langhui AI delivered a systematic end-to-end solution — from data foundation to intelligent applications — built on 500TB+ trusted medical datasets, 5,000+ certified experts, and a five-tier QA system.
Clear Pathways for Smart Healthcare — Changsha Langhui Anchors AI Medical Data Services with End-to-End Solutions
The 2026 Smart Medicine Conference released a four-layer AI deployment capability framework for hospitals and a four-role full-domain enablement practice, providing a standardized implementation framework for hospital smart transformation. Drawing on its medical data service experience, Changsha Langhui explains the framework's core logic — high-quality compliant medical data is the foundational backbone for healthcare AI deployment. Across the four AI focus areas identified by the conference (data integration, efficiency, screening, and resource scheduling), Langhui aligns its four core businesses — medical text structured annotation, multimodal imaging dataset processing, hospital operations data standardization, and multi-omics research dataset customization — to fully cover data supply needs across patient services, clinical care, hospital management, and research innovation. Industry observers note that hospital digitalization often over-invests in systems while under-investing in data infrastructure. Langhui's one-stop medical data service system adapts to domestic medical LLM R&D and smart healthcare initiatives at all hospital tiers, advancing new productive forces for Healthy China.
Changsha Langhui Invited to "Data Resonance · Empowering Hunan" Provincial High-Quality Dataset Matchmaking Conference — Officially Announcing a 1.5 Million RMB Cancer CT Imaging Dataset Procurement Demand
On May 13, 2026, the "Data Resonance · Empowering Hunan" Provincial High-Quality Dataset Matchmaking Conference, jointly guided by the Hunan Provincial Data Bureau and the Provincial Department of Industry and Information Technology, was held at the Hunan Big Data Exchange. Changsha Langhui Information Technology Co., Ltd., an AI high-tech enterprise deeply rooted in the medical vertical, was invited to attend. The company set up an exclusive booth in the "AI and High-Quality Data Supply Negotiation Zone" and, as a core medical dataset demand publisher, officially announced a 1.5 million RMB cancer CT imaging dataset procurement demand for this round, alongside a total of tens of millions of RMB in comprehensive medical AI data procurement needs. This procurement will support training for cancer early-screening medical large models. The company also reached preliminary cooperation intentions with multiple enterprises and universities, working together to build a standardized medical data ecosystem and advance medical AI from basic perception to deep cognitive intelligence, supporting the high-quality development of Hunan's data factor industry and smart healthcare.
Changsha Langhui Officially Launches STEM Math Problem Production Platform — Specialized STEM Capabilities Empower AI Reasoning Improvement
Changsha Langhui Information Technology Co., Ltd. has officially launched its proprietary STEM math problem platform production system, building an end-to-end closed-loop quality control pipeline from problem authoring through final acceptance. Leveraging deep STEM expertise, the platform stably produces original professional-difficulty math problems and solution pathways covering all difficulty levels and domains — from high-school olympiad to Master's/PhD and postdoctoral research — providing core data support for AI model reasoning in STEM fields and helping AI bridge from perceptual intelligence to cognitive intelligence.
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