Enterprise privatization LLM application development path: from technology follower to business driver

Written by
Silas Grey
Updated on:July-01st-2025
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How can an enterprise's private AI system move from being a technology follower to being business-driven? This article will reveal the answer.

Core content:
1. Knowledge base revolution: How local development of LLM applications can improve the efficiency and security of enterprise knowledge management
2. Model parameter adjustment black technology: How local development of LLM applications can turn AI into an industry expert in seconds
3. Prompt word + RAG combination: How local development of LLM applications can cure AI "hallucinations" and improve output accuracy

Yang Fangxian
Founder of 53AI/Most Valuable Expert of Tencent Cloud (TVP)

Why do many companies still need to build private AI systems by developing LLM applications locally when public AI platforms such as Yuanbao and Doubao are popular ? The key to the answer is: what is important is not to follow the trend and deploy a large model, but to create a business-driven AI application paradigm that can really be implemented .


1. Knowledge base revolution: from "single soldier combat" to "group army combat"

The fatal flaws of public platforms : ❌  Documents are uploaded in pieces : only one contract can be uploaded at a time, and a 500-page product manual must be uploaded 50 times ❌  Knowledge update is delayed : new versions of technical drawings need to be replaced manually, which can easily lead to AI "memory confusion" ❌  Data leakage risk : sensitive files are stored on third-party servers, which poses compliance risks

Solutions for local development of LLM applications : ✅Batch  knowledge infusion : Upload 3,000 sales contracts + product manuals with one click, automatically split and vectorized storage ✅Dynamic  update engine : When the ERP system updates the equipment parameters, the AI ​​knowledge base is refreshed synchronously (such as the IoT equipment database of a heavy industry enterprise) ✅Enterprise  -level security protection : Data is encrypted and stored in the enterprise computer room throughout the process, supporting permission classification and access auditing

For example , a manufacturing company built an after-sales knowledge base by developing LLM applications locally , and fed 20 years of maintenance records and 100,000 drawings into AI. When a technician asked "abnormal noise from the gearbox of model A", AI accurately retrieved solutions for similar faults in 2019, increasing maintenance efficiency by 40%.


2. Model parameter adjustment black technology: turning AI into an "industry expert" in seconds

The "fool mode" of public platforms : ❌Same  temperature values : Legal documents and marketing copywriting share the same set of parameters, which is worrying for professionalism ❌Unable  to dig deep vertically : Unable to fine-tune the model for industry terms (such as "EGFR gene mutation detection" in the medical field)

Expert mode for local development of LLM applications : ✅Precise  parameter control :

  • Legal documents  → Temperature 0.2 + Penalty coefficient 1.5 → Generate rigorous and unambiguous contract terms
  • Marketing copy  → temperature 0.8 + top_p 0.9 → creative advertising slogans ✅  Field fine-tuning tool : upload the "Medical Device Regulations Compilation" and let AI automatically learn professional terms

For example , the law firm adjusted the repetition penalty parameters to reduce the repetition rate of AI-generated contract clauses from 15% to 0.3%, which fully met client requirements.


3. Prompt word + RAG combination: Specially designed to cure AI "hallucinations"

The crash scene of the public platform : ❌Restriction  of prompt words : It is impossible to embed complex business rules (such as multi-condition judgment or industry regulations) ❌Frequent  hallucinations : When asked "our company's Q3 2024 revenue", AI may fabricate data

Tips for taming local LLM applications : ✅Three  -layer logic of prompt word design :

  1. Task definition layer : clarify AI roles and goals
    # Role Definition
    You are a senior contract review expert and must strictly abide by the Civil Code and the company's internal legal rules.
  2. Process control layer : split multi-step tasks and introduce verification
    # Step-by-step review
    Step  1 : Check the qualifications of the contracting party → Call the National Enterprise Credit Information Publicity System API for verification
    Step  2 : Identify key clause risks → Compare the default case library in the knowledge base
  3. Output constraint layer : restrict answer format and data source
    # Output requirements
    Reference Section 3.2 of the Knowledge Base document , “Default Handling Standards”, and list the risk points in a Markdown table format

✅  RAG enhanced knowledge binding :

  • Retrieve legal provisions and historical contract templates from the corporate knowledge base
  • When AI generates answers, it is mandatory to associate at least 3 references

Example : A construction company uses a locally developed LLM application to generate a construction plan :

  • Input : "Generate foundation pit support plan for project XX, the geological conditions are soft soil layer, and there are subway tunnels around"
  • Output process :
  1. Search "Technical Code for Construction Foundation Pit Support" JGJ120-2019 from the knowledge base
  2. Retrieve the "underground continuous wall + internal support" solution from the construction records of similar projects
  3. Generate material usage calculation table based on geological report and automatically mark safety risk points
  • Results : The time for program preparation was shortened from 7 days to 2 hours, and the approval rate increased by 90%.

  • 4. Breaking down data silos: Making AI the “brain for business collaboration”

    The "information cocoon" of the public platform : ❌ Unable to integrate data from multiple systems (such as finance, legal affairs, and supply chain) ❌ Lack of real-time business linkage capabilities

    Ecological integration of locally developed LLM applications : ✅Finance  -Legal collaboration case :

    1. Smart contract risk scanning : AI reads supplier payment records from the financial system in real time , and automatically marks high-risk contracts based on the legal department’s “Partner Blacklist.”
    2. Dynamic compliance adaptation : When the Individual Income Tax Law is revised, AI automatically scans all employee salary contracts, identifies the "year-end bonus tax calculation method conflict" clause, and recommends a revised template.
    3. Multi-source data verification : When the legal department drafts an overseas investment agreement, AI simultaneously retrieves the foreign exchange rate fluctuation data from the financial system , prompts the risk of "exchange rate lock-in clauses", and recommends hedging solutions.

    For example : Multinational companies can build cross-border investment assistants by developing LLM applications locally :

    • Integrated data sources : financial system (SAP), legal contract database, Bloomberg terminal (foreign exchange data)
    • Functionality :
      • When generating an investment agreement, automatically embed real-time exchange rate risk warnings
      • When the agreement involves sensitive countries (such as sanctioned regions), AI cites the Ministry of Commerce's "Negative List of Overseas Investment" to intercept illegal clauses
    • Results : Agreement drafting efficiency increased by 60% and compliance disputes decreased by 45%.

    5. Dify: The core capability of enterprise-level AI development platform

    Dify is an open source large language model (LLM) application development platform designed to help developers and non-technical personnel quickly build, deploy and manage generative AI applications based on large language models. It combines the concepts of Backend as a Service (BaaS) and LLMOps (Large Language Model Operations) , and significantly reduces the development threshold of AI applications through modular design and low-code/no-code tools.

    Core Features

    1. Multi-model support and flexible expansion

    • Compatible with mainstream models such as DeepSeek, Qwen, and Silicon-based Flow, and supports custom model access
    • Silicon-based mobile APIs are called in non-confidential scenarios, and private models are deployed locally in confidential scenarios to ensure data is not leaked
  • Low-code/no-code development

    • Provides a visual interface (such as drag-and-drop workflow, Prompt IDE), so non-technical personnel can quickly build AI applications
  • Retrieval-augmented generation (RAG) and intelligent agents (Agents)

    • Supports knowledge extraction and quantification from documents to improve the accuracy of question answering
    • Task decomposition and execution through function calls or ReAct framework
  • Full Lifecycle Management (LLMOps)

    • Built-in data analysis and monitoring functions to support continuous iterative optimization
  • Private deployment and security compliance

    • Supports Docker containerized deployment on-premises or in the cloud to meet enterprise data privacy and compliance requirements

    Summarize

    Dify uses technology stack encapsulation and low-code tools to transform AI application development from "exclusive to experts" to "universal." Whether it is a startup team quickly verifying ideas or an enterprise building a private AI middle platform, Dify can provide flexible and secure solutions.


    Conclusion

    The core value of developing LLM applications locally is to transform technology into a feasible business solution . Whether it is to precisely control AI output through prompt word engineering or to precisely feed large models through RAG, private deployment is redefining the boundaries of enterprise intelligence. Technologies that only talk about "large models" but not "implementation scenarios" will eventually be eliminated in the real business battlefield.