A/B Testing LLM Models and Prompts — Replacing Guesswork With Data
Use shadow mode, statistical significance testing, and gradual rollouts to confidently replace your LLM models and prompts.
webcoderspeed.com
53 articles
Use shadow mode, statistical significance testing, and gradual rollouts to confidently replace your LLM models and prompts.
Deep dive into core agent patterns: ReAct loops, Plan-Execute-Observe, reflection mechanisms, and preventing infinite loops with real TypeScript implementations.
Build memory systems for AI agents with in-context history, vector stores for semantic search, episodic memories of past interactions, and fact-based semantic knowledge.
Secure AI agents against prompt injection, indirect attacks via tool results, unauthorized tool use, and data exfiltration with sandboxing and audit logs.
Design production-grade AI agents with tool calling, agent loops, parallel execution, human-in-the-loop checkpoints, state persistence, and error recovery.
Build scalable AI background processing with BullMQ, idempotent job tracking, exponential backoff, progress streaming, and webhook callbacks for reliable async workflows.
Guide to building domain-specific LLM benchmarks, task-based evaluation, adversarial testing, and detecting benchmark contamination for production use cases.
Implement multi-layer output moderation using OpenAI Moderation API, Llama Guard, toxicity scoring, and custom classifiers to keep your AI safe.
Implement cost attribution, anomaly detection, and forecasting to prevent runaway LLM spending and optimize your AI infrastructure.
Learn production-grade error handling for LLM applications including timeout configuration, exponential backoff, context window management, and graceful fallback strategies.
Build automated evaluation pipelines with LLM-as-judge, DeepEval metrics, and RAGAS to catch quality regressions before users see them.
Learn how to use feature flags to safely roll out LLM features, implement percentage-based rollouts, and build kill switches for AI-powered capabilities.
Optimize LLM inference speed by 10×. Master quantization tradeoffs, speculative decoding, KV cache management, flash attention, and batching strategies.
Comprehensive guide to evaluating LLM performance in production using offline metrics, online evaluation, human sampling, pairwise comparisons, and continuous monitoring pipelines.
Build scalable personalization systems for LLM applications using user profiles, embedding-based preferences, and privacy-preserving context injection techniques.
Comprehensive guide to red teaming LLMs including jailbreak testing, prompt injection, bias testing, adversarial robustness, and privacy attacks.
Master OpenAI JSON Schema, Anthropic tool use, Zod validation, and retry logic for bulletproof LLM data extraction in production.
Master tool schema design, description engineering, error handling, idempotency, and tool versioning to build AI agent tools that agents actually want to use.
Deploy enterprise-grade LLMs on AWS Bedrock without data egress. Explore available models, runtime APIs, streaming, agents, and cost comparisons.
Deploy CrewAI multi-agent systems to production. Learn crew composition, memory systems, custom tools, and scaling patterns for reliable AI teams.
Decide between fine-tuning and RAG with decision frameworks, cost/performance tradeoffs, hybrid approaches, and evaluation metrics like RAGAS and G-Eval.
Deploy inference workloads on Kubernetes with vLLM, GPU scheduling, autoscaling, and spot instances for cost-effective large-language model serving.
Design bulletproof LLM agents with structured tool definitions, parallel execution, result validation, human-in-the-loop gates, and comprehensive observability.
Build resilient LLM APIs with streaming SSE, exponential backoff, model fallback chains, token budgets, prompt caching, and circuit breakers.
Cut LLM costs and latency with exact match caching, semantic caching, embedding similarity, Redis implementation, cost savings, and TTL strategies.
Manage long conversations and large documents within LLM context limits using sliding windows, summarization, and map-reduce patterns to avoid the lost-in-the-middle problem.
Master system prompt architecture, persona design, and context management for production LLM applications. Learn structured prompt patterns that improve consistency and quality.
Master token counting, semantic caching, prompt compression, and model routing to dramatically reduce LLM costs while maintaining output quality.
How LLM providers use training data, privacy guarantees from OpenAI vs Azure vs AWS Bedrock, PII detection and redaction, and self-hosted LLM alternatives.
Master function calling with schema design, parallel execution, error handling, and recursive loops to build autonomous LLM agents that work reliably at scale.
Master end-to-end LLM observability with OpenTelemetry spans, Langfuse tracing, and token-level cost tracking to catch production issues before users do.
Implement comprehensive LLM observability with LangSmith/LangFuse integration, token tracking, latency monitoring, cost attribution, quality scoring, and degradation alerts.
Comprehensive architecture for production LLM systems covering request pipelines, async patterns, cost/latency optimization, multi-tenancy, observability, and scaling to 10K concurrent users.
Deploy open-source LLMs at scale with vLLM. Compare frameworks, optimize GPU memory, quantize models, and run cost-effective inference in production.
Master LLM token economics by implementing token counting, setting budgets, and optimizing costs across your AI infrastructure with tiktoken and practical middleware patterns.
Master LoRA and QLoRA for efficient fine-tuning of open-source models like Llama 2, Mistral, and Phi on limited hardware.
End-to-end MLOps infrastructure for LLMs including CI/CD pipelines, automated evaluation, staging environments, canary deployments, and production monitoring.
Build scalable multi-agent systems using the orchestrator-worker pattern. Learn task routing, state management, error recovery, and production deployment patterns.
Master vision APIs, Whisper transcription, document processing, cost-benefit tradeoffs, and fallback strategies for reliable multimodal AI features.
Self-hosting LLMs is now practical. Here''s when it makes sense, what hardware you need, and how to deploy at scale.
Learn when and how to fine-tune OpenAI models in production, including dataset preparation, cost optimization, and evaluation strategies.
Explore OpenAI''s Responses API for managing conversation state, tools, and long-lived interactions without manual history management.
Learn the Plan-and-Execute pattern for slashing AI inference costs. Use frontier models for planning, cheap models for execution, and optimally route tasks by type.
Learn to defend against direct and indirect prompt injection attacks using input sanitization, system prompt isolation, and detection mechanisms.
Defend against prompt injection: direct vs indirect attacks, input sanitization, system prompt isolation, output validation, sandboxed execution, and rate limiting.
Techniques for manually and automatically optimizing prompts including structured templates, chain-of-thought, few-shot selection, compression, and DSPy automation.
Learn how agentic RAG systems use reasoning and iterative retrieval to outperform static RAG pipelines, including CRAG, FLARE, and self-ask decomposition patterns.
Explore naive RAG limitations and advanced architectures like modular RAG, self-RAG, and corrective RAG that enable production-grade question-answering systems.
Choose between long-context LLMs and RAG by understanding the lost-in-the-middle problem, cost dynamics, and latency tradeoffs.
Build production-ready RAG systems with semantic chunking, embedding optimization, reranking, citation tracking, and hallucination detection.
Implement semantic caching to reduce LLM API costs by 40-60%, handle similarity thresholds, TTLs, and cache invalidation in production.
Implement production-grade LLM streaming with SSE, OpenAI streaming, backpressure handling, mid-stream errors, content buffering, and abort patterns.
Learn to generate high-quality synthetic training data with GPT-4, handle edge cases, and build self-improving data flywheels.