Prompt Engineering

Techniques for creating, structuring, testing, and refining prompts for different AI tasks and models.

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Robô diante de um notebook entre três cartões organizados de exemplos à esquerda e muitos cartões dispersos e marcados em vermelho à direita.

Prompt Engineering26/09/20266 min read

Prompts with examples: when few-shot helps and when it only adds noise

Learn when examples genuinely improve a prompt, when they only add unnecessary context, and how to compare zero-shot and few-shot with a representative test set.

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Ilustração dividida entre zero-shot e few-shot, com cartões de instruções e exemplos, respostas simuladas e medidores de uso da janela de contexto.

Prompt Engineering22/09/20265 min read

Zero-shot vs. few-shot: when examples improve a prompt and when they waste context

Compare instructions without examples and prompts with demonstrations on the same test cases to measure format, accuracy, and token cost.

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Infográfico tecnológico em fundo escuro compara OpenAI, Claude e Gemini em três colunas, com camadas de instrução e setas indicando prioridades entre regras e pedidos.

Prompt Engineering24/08/202613 min read

System prompt, developer message, and user prompt: how instruction hierarchy changes across OpenAI, Claude, and Gemini

OpenAI, Claude, and Gemini separate high-level instructions from the user's request, but their APIs use different roles, fields, and precedence rules.

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Banner tecnológico em fundo azul-escuro compara OpenAI, Claude e Gemini em três colunas, com exemplos de JSON livre e JSON com schema, ícones de erro e validação e um fluxo da instrução ao consumo pelo código.

Prompt Engineering17/08/202613 min read

Structured Outputs or “respond in JSON”? When to use JSON Schema in OpenAI, Claude and Gemini

Requesting JSON, enabling an output mode and imposing a schema solve different problems. See when each approach is sufficient and where it is still necessary to validate content.

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Ilustração dividida entre um grande bloco de prompt monolítico à esquerda e uma sequência de etapas conectadas com checkpoints à direita, com um ponto de decisão ao centro.

Prompt Engineering17/08/202611 min read

Mega-prompt or prompt chaining? When to split a task into steps and when to keep it to a single call

A practical guide to deciding between a single call and a staged flow, comparing dependencies, validation, failures, state, latency, cost, and testing.

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