Build vs Buy: Making Smart Decisions About Custom LLM Models

Tom explores the critical decision between building custom LLM models versus using off-the-shelf solutions. Drawing from insights at the AWS Expo, he breaks down the real costs, challenges, and strategic considerations for organizations evaluating domain-specific AI implementations.

Build vs Buy: Making Smart Decisions About Custom LLM Models

Key Topics Covered

When to Build Custom LLM Models

• Domain-specific applications requiring specialized knowledge
• Handling proprietary or confidential information
• Real-world example: AIDoc's experience at AWS Expo
• Understanding your organization's unique requirements

True Costs of Building

1. Data Preparation
   • Gathering organizational historical knowledge
   • Creating validation and training datasets
   • Organizing proprietary information
2. Training Expenses
   • GPU infrastructure costs (billions spent by OpenAI, Anthropic monthly)
   • Ongoing computational requirements
   • Budget considerations for organizations
3. Maintenance & Updates
   • Keeping pace with base model improvements
   • Avoiding being locked into outdated versions
   • Continuous investment requirements

When to Buy Off-the-Shelf

• Non-hyper-specific use cases
• Data collation and comparison tasks
• General analysis and processing needs
• Cost-effective solutions for standard workflows

Optimizing Model Selection

• Using platforms like AWS Bedrock for model diversity
• Balancing accuracy vs. cost vs. performance
• Example: Claude Opus vs. Sonnet vs. Haiku trade-offs
• Avoiding "overkill" with expensive models
• Testing and validation strategies

Key Takeaways

• Don't default to the most expensive model
• Test multiple options before committing
• Understand total cost of ownership for custom builds
• Match model capabilities to actual requirements
• Consider the rapid pace of AI ecosystem changes

Mentioned Companies/Platforms

• AWS (Amazon Web Services)
• AWS Bedrock
• AIDoc
• OpenAI
• Anthropic (Claude models: Opus, Sonnet, Haiku)

Resources

• AWS Expo insights and presentations
• Open source foundation models for custom building

Chapters

• 0:02 - Introduction: The Build vs Buy Debate
• 0:25 - When Building Custom Models Makes Sense
• 2:02 - The Real Costs of Building Your Own Model
• 3:35 - Real-World Example: AIDoc at AWS Expo
• 4:09 - The Case for Off-the-Shelf Solutions
• 5:44 - Optimizing Model Selection and Cost
• 6:46 - Final Recommendations and Wrap-Up