https://viqus.ai/blogDeep dives into production AI, LLM infrastructure, cost optimization, and the engineering behind real-world AI systems. By the team at Viqus.enSat, 17 Oct 2026 00:48:54 GMThttps://viqus.ai/img/icono.pnghttps://viqus.ai/blog144144https://viqus.ai/blog/reasoning-models-vs-standard-llms-when-each-winshttps://viqus.ai/blog/reasoning-models-vs-standard-llms-when-each-winsA practical comparison of reasoning models and standard LLMs in 2026. Learn where the extra latency and cost of thinking variants actually pay off, and where standard models are the better choice.Pablo SerranoDeep DiveThu, 07 May 2026 09:00:00 GMThttps://viqus.ai/blog/when-to-stop-using-agents-go-back-to-pipelineshttps://viqus.ai/blog/when-to-stop-using-agents-go-back-to-pipelinesA contrarian take on when to ditch AI agents and use deterministic pipelines instead. Learn the warning signs that an agent is the wrong tool, and how to migrate without losing capability.Pablo SerranoEngineeringTue, 05 May 2026 09:00:00 GMThttps://viqus.ai/blog/observability-cost-llm-monitoring-billhttps://viqus.ai/blog/observability-cost-llm-monitoring-billA practical look at the real cost of LLM observability in production. Covers storage costs, what to log versus skip, sampling strategies, and how to keep the monitoring bill from rivaling the inference bill.Pablo SerranoEngineeringThu, 30 Apr 2026 09:00:00 GMThttps://viqus.ai/blog/when-to-fire-your-ai-featurehttps://viqus.ai/blog/when-to-fire-your-ai-featureA practical framework for deciding when to kill an underperforming AI feature. Covers the warning signs, the sunk cost traps, and the structured process for making the decision without regrets.Pablo SerranoStrategyTue, 28 Apr 2026 09:00:00 GMThttps://viqus.ai/blog/versioning-prompts-contexts-lessons-learnedhttps://viqus.ai/blog/versioning-prompts-contexts-lessons-learnedA practical guide to versioning prompts, contexts, and retrieval configurations in production AI systems. Covers what to version, how to test changes, and the rollback patterns that save you when something breaks.Pablo SerranoDeep DiveThu, 23 Apr 2026 09:00:00 GMThttps://viqus.ai/blog/multi-tenant-llm-serving-economicshttps://viqus.ai/blog/multi-tenant-llm-serving-economicsA practical breakdown of multi-tenant LLM serving economics. Covers batching strategies, isolation approaches, fairness, and the architectural choices that determine whether your platform makes money.Pablo SerranoEngineeringTue, 21 Apr 2026 09:00:00 GMThttps://viqus.ai/blog/state-of-structured-outputs-2026https://viqus.ai/blog/state-of-structured-outputs-2026A practical comparison of structured output guarantees across major LLM providers in 2026. Learn what 'guaranteed' actually means, where each provider falls short, and how to design for portability.Pablo SerranoDeep DiveThu, 16 Apr 2026 09:00:00 GMThttps://viqus.ai/blog/async-agent-architectures-queue-vs-streaminghttps://viqus.ai/blog/async-agent-architectures-queue-vs-streamingA practical comparison of async agent architectures. Learn when queue-based designs beat streaming pipelines, and how to choose the right pattern for your AI workload.Pablo SerranoEngineeringTue, 14 Apr 2026 09:00:00 GMThttps://viqus.ai/blog/ai-first-product-roles-pm-unlearnhttps://viqus.ai/blog/ai-first-product-roles-pm-unlearnHow product management is changing in the AI era. Learn what skills AI-first PMs need, which habits to unlearn, and how the role is evolving as LLM-powered products become standard.Pablo SerranoStrategyThu, 09 Apr 2026 09:00:00 GMThttps://viqus.ai/blog/measuring-roi-ai-projects-frameworkhttps://viqus.ai/blog/measuring-roi-ai-projects-frameworkA practical framework for measuring the ROI of AI and LLM projects. Covers cost attribution, value measurement, leading indicators, and how to communicate results to executives.Pablo SerranoStrategyMon, 06 Apr 2026 09:00:00 GMThttps://viqus.ai/blog/long-context-vs-rag-million-token-erahttps://viqus.ai/blog/long-context-vs-rag-million-token-eraA practical comparison of long-context LLMs and RAG pipelines in 2026. Learn when long context wins, when RAG still dominates, and how to build hybrid systems that get the best of both.Pablo SerranoDeep DiveThu, 02 Apr 2026 09:00:00 GMThttps://viqus.ai/blog/eval-suites-as-product-iphttps://viqus.ai/blog/eval-suites-as-product-ipWhy evaluation suites are becoming the most important intellectual property in LLM products. Learn how to build, grow, and protect an eval set that actually drives product quality.Pablo SerranoDeep DiveMon, 30 Mar 2026 09:00:00 GMThttps://viqus.ai/blog/prompt-injection-defense-playbookhttps://viqus.ai/blog/prompt-injection-defense-playbookA practical guide to defending against prompt injection attacks in LLM applications. Covers direct and indirect injection, defense-in-depth patterns, and what actually works in production.Pablo SerranoEngineeringThu, 26 Mar 2026 09:00:00 GMThttps://viqus.ai/blog/model-routing-2026-single-model-obsoletehttps://viqus.ai/blog/model-routing-2026-single-model-obsoleteWhy model routing has become standard in production LLM systems. Learn how to design cascades, score models per task, and build routing logic that balances cost, latency, and quality.Pablo SerranoStrategyMon, 23 Mar 2026 09:00:00 GMThttps://viqus.ai/blog/guardrails-input-output-safety-llmshttps://viqus.ai/blog/guardrails-input-output-safety-llmsA practical guide to building effective guardrails for LLM applications. Covers input validation, output filtering, classifier layers, and how to evaluate guardrail effectiveness.Pablo SerranoEngineeringThu, 19 Mar 2026 09:00:00 GMThttps://viqus.ai/blog/llm-gateways-abstraction-layerhttps://viqus.ai/blog/llm-gateways-abstraction-layerWhy most AI teams end up building an LLM gateway — and what should go into one. Covers routing, fallbacks, rate limits, caching, cost tracking, and when to build versus buy.Pablo SerranoEngineeringMon, 16 Mar 2026 09:00:00 GMThttps://viqus.ai/blog/mixture-of-experts-production-active-parametershttps://viqus.ai/blog/mixture-of-experts-production-active-parametersA practical look at Mixture of Experts (MoE) architectures in production. Learn why active parameter count matters more than total, how MoE affects deployment, and when it's worth the complexity.Pablo SerranoAI ResearchThu, 12 Mar 2026 09:00:00 GMThttps://viqus.ai/blog/kv-cache-hidden-bottleneck-long-contexthttps://viqus.ai/blog/kv-cache-hidden-bottleneck-long-contextUnderstand the KV cache — the memory structure behind every transformer — and why it's the real bottleneck for long-context LLMs. Covers compression techniques, quantization, and production implications.Pablo SerranoDeep DiveMon, 09 Mar 2026 09:00:00 GMThttps://viqus.ai/blog/dynamic-tool-retrieval-scaling-agentshttps://viqus.ai/blog/dynamic-tool-retrieval-scaling-agentsLearn how dynamic tool retrieval lets AI agents scale to hundreds of tools without exploding their context window. Covers indexing strategies, retrieval patterns, and the tradeoffs involved.Pablo SerranoEngineeringThu, 05 Mar 2026 09:00:00 GMThttps://viqus.ai/blog/context-engineering-replacing-prompt-engineeringhttps://viqus.ai/blog/context-engineering-replacing-prompt-engineeringContext engineering is the emerging discipline of shaping everything an LLM sees — not just the prompt. Learn what it involves, why it matters more than prompt engineering, and how to do it well.Pablo SerranoDeep DiveMon, 02 Mar 2026 09:00:00 GMThttps://viqus.ai/blog/llm-caching-strategies-productionhttps://viqus.ai/blog/llm-caching-strategies-productionA practical guide to caching strategies for production LLM applications. Covers semantic caching, prefix caching, response caching, and when each approach saves real money.Pablo SerranoEngineeringThu, 26 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/global-ai-infrastructure-race-2026https://viqus.ai/blog/global-ai-infrastructure-race-2026An in-depth analysis of the 2026 global AI infrastructure race. Explore how the US, China, India, and Saudi Arabia are investing billions in sovereign compute and silicon.Pablo SerranoDeep DiveWed, 25 Feb 2026 16:23:00 GMThttps://viqus.ai/blog/ai-native-applications-designhttps://viqus.ai/blog/ai-native-applications-designHow to design AI-native applications that go beyond chatbots. Covers UX patterns, progressive disclosure of AI, confidence communication, and the principles of AI-first product design.Pablo SerranoStrategyTue, 24 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/embedding-models-unsung-heroeshttps://viqus.ai/blog/embedding-models-unsung-heroesA deep dive into embedding models and why they matter more than you think. Covers model selection, fine-tuning, evaluation, and practical tips for better embeddings in production.Pablo SerranoDeep DiveSat, 21 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/building-reliable-ai-pipelineshttps://viqus.ai/blog/building-reliable-ai-pipelinesPractical lessons for building reliable AI pipelines. Covers error handling, testing strategies, fallback patterns, and production guardrails from real-world deployments.Pablo SerranoEngineeringFri, 20 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/ai-regulation-europe-buildershttps://viqus.ai/blog/ai-regulation-europe-buildersA practical guide to the EU AI Act for AI builders and product teams in 2026. Covers risk classification, compliance requirements, documentation, and actionable steps.Pablo SerranoPolicyTue, 17 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/prompt-engineering-dead-long-livehttps://viqus.ai/blog/prompt-engineering-dead-long-liveHow prompt engineering is evolving from ad-hoc craft to systematic discipline. Covers structured prompting, evaluation-driven design, and the tools and practices that define modern prompt work.Pablo SerranoDeep DiveSun, 15 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/vector-databases-comparedhttps://viqus.ai/blog/vector-databases-comparedA practical comparison of vector databases for production AI systems in 2026. Covers Pinecone, Weaviate, Qdrant, Milvus, pgvector, and when to choose each.Pablo SerranoEngineeringFri, 13 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/rag-chunking-strategies-2026https://viqus.ai/blog/rag-chunking-strategies-2026A practical guide to RAG chunking strategies for production AI systems. Covers fixed-size, semantic, recursive, and parent-child chunking with real-world performance comparisons.Pablo SerranoEngineeringWed, 11 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/open-source-vs-closed-llmshttps://viqus.ai/blog/open-source-vs-closed-llmsAn honest comparison of open-source and closed-source LLMs for production use. Covers performance, cost, control, compliance, and when each makes sense for your team.Pablo SerranoStrategyTue, 10 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/evaluating-llms-beyond-benchmarkshttps://viqus.ai/blog/evaluating-llms-beyond-benchmarksLearn how to evaluate LLMs for your specific production use case, beyond generic benchmarks. Covers custom evaluation design, LLM-as-judge, and practical evaluation workflows.Pablo SerranoDeep DiveSat, 07 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/ai-code-review-pipelineshttps://viqus.ai/blog/ai-code-review-pipelinesLearn how to build an AI-powered code review pipeline that adds value without creating noise. Covers architecture, prompt design, false positive management, and developer trust.Pablo SerranoEngineeringThu, 05 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/llm-observability-monitoring-stackhttps://viqus.ai/blog/llm-observability-monitoring-stackBuild an effective LLM observability and monitoring stack. Covers logging, tracing, quality metrics, cost tracking, and alerting strategies for production AI systems.Pablo SerranoEngineeringTue, 03 Feb 2026 09:00:00 GMThttps://viqus.ai/blog/when-to-build-vs-buy-aihttps://viqus.ai/blog/when-to-build-vs-buy-aiA decision framework for engineering leaders choosing between building custom AI systems and buying SaaS solutions. Covers cost, control, speed, and strategic considerations.Pablo SerranoStrategyFri, 30 Jan 2026 09:00:00 GMThttps://viqus.ai/blog/real-cost-running-ai-productionhttps://viqus.ai/blog/real-cost-running-ai-productionA complete breakdown of production AI costs beyond API pricing. Covers inference, fine-tuning, evaluation, infrastructure, and hidden operational expenses that add up fast.Pablo SerranoDeep DiveTue, 27 Jan 2026 09:00:00 GMThttps://viqus.ai/blog/ai-governance-startups-practical-guidehttps://viqus.ai/blog/ai-governance-startups-practical-guideA practical AI governance framework for startups and fast-moving teams. Covers risk assessment, documentation, model evaluation, and compliance without killing velocity.Pablo SerranoStrategySun, 25 Jan 2026 09:00:00 GMThttps://viqus.ai/blog/small-language-models-right-sizehttps://viqus.ai/blog/small-language-models-right-sizeExplore why small language models (1B–13B parameters) are winning in production AI. Covers cost savings, latency advantages, deployment options, and when to choose small over large.Pablo SerranoAI ResearchThu, 22 Jan 2026 09:00:00 GMThttps://viqus.ai/blog/mcp-tool-use-patternshttps://viqus.ai/blog/mcp-tool-use-patternsA deep dive into the Model Context Protocol (MCP) and modern tool use patterns for AI agents. Covers architecture, security considerations, and practical implementation guidance.Pablo SerranoDeep DiveMon, 19 Jan 2026 09:00:00 GMThttps://viqus.ai/blog/synthetic-data-training-guidehttps://viqus.ai/blog/synthetic-data-training-guideLearn how to generate high-quality synthetic training data for LLMs. Covers data design, quality filters, diversity strategies, and common failure modes to avoid.Pablo SerranoEngineeringThu, 15 Jan 2026 09:00:00 GMThttps://viqus.ai/blog/fine-tuning-vs-prompting-2026-guidehttps://viqus.ai/blog/fine-tuning-vs-prompting-2026-guideA practical 2026 guide to choosing between fine-tuning and prompt engineering for LLM applications. Includes cost analysis, performance benchmarks, and a decision framework.Pablo SerranoDeep DiveMon, 12 Jan 2026 09:00:00 GMThttps://viqus.ai/blog/ai-agents-production-lessons-2026https://viqus.ai/blog/ai-agents-production-lessons-2026Practical lessons from 12 months of deploying AI agents in production. Discover the architecture patterns, failure modes, and reliability strategies that separate demos from real products.Pablo SerranoEngineeringWed, 07 Jan 2026 09:00:00 GMThttps://viqus.ai/blog/ai-search-vs-traditional-searchhttps://viqus.ai/blog/ai-search-vs-traditional-searchA practical comparison of AI-powered semantic search and traditional keyword search. Learn when vectors outperform keywords, when they don't, and how to build hybrid search systems.Pablo SerranoDeep DiveMon, 05 Jan 2026 09:00:00 GMThttps://viqus.ai/blog/multimodal-ai-production-readinesshttps://viqus.ai/blog/multimodal-ai-production-readinessA practical assessment of multimodal AI capabilities for production use in 2026. Covers vision, audio, document understanding, and which use cases are production-ready today.Pablo SerranoAI ResearchSat, 03 Jan 2026 09:00:00 GMT