ThePromptEra — Claude, IA e Prompt Engineering na Prática https://www.thepromptera.com/blog Guias, novidades e análises sobre Claude, IA e prompt engineering. Escrito por quem usa, testa e constrói com essas ferramentas todos os dias. en-us joaovictor.cidade@gmail.com (João Schuller) joaovictor.cidade@gmail.com (João Schuller) Mon, 01 Jun 2026 12:00:00 GMT https://www.thepromptera.com/blog/en/2026-06-01-fine-tuning-vs-prompt-engineering Fine-Tuning vs Prompt Engineering: Which One You Need https://www.thepromptera.com/blog/en/2026-06-01-fine-tuning-vs-prompt-engineering Fine-tuning vs prompt engineering: know when each approach pays off and when it just adds cost and complexity to your AI stack. Mon, 01 Jun 2026 12:00:00 GMT joaovictor.cidade@gmail.com (João Schuller) prompt-engineeringfine-tuningllm https://www.thepromptera.com/blog/en/2026-08-17-chain-of-thought-prompting-when-it-helps Chain-of-Thought Prompting: When It Helps and When It Wastes Tokens https://www.thepromptera.com/blog/en/2026-08-17-chain-of-thought-prompting-when-it-helps Chain-of-thought prompting genuinely helps on math and symbolic reasoning, but a 2025 meta-analysis shows it often produces verbose rationalization elsewhere. Here is how to decide before paying 3-5x in tokens. Mon, 17 Aug 2026 12:00:00 GMT joaovictor.cidade@gmail.com (João Schuller) prompt-engineeringchain-of-thoughtllmtoken-optimizationclaude https://www.thepromptera.com/blog/pt/2026-06-01-fine-tuning-vs-prompt-engineering Fine-Tuning vs Prompt Engineering: o que você precisa https://www.thepromptera.com/blog/pt/2026-06-01-fine-tuning-vs-prompt-engineering Fine-tuning vs prompt engineering: quando cada abordagem vale o custo e quando só adiciona complexidade desnecessária ao seu stack de IA. Mon, 01 Jun 2026 12:00:00 GMT joaovictor.cidade@gmail.com (João Schuller) prompt-engineeringfine-tuningllm https://www.thepromptera.com/blog/pt/2026-08-17-chain-of-thought-prompting-when-it-helps Chain-of-thought prompting: quando ajuda e quando desperdiça tokens https://www.thepromptera.com/blog/pt/2026-08-17-chain-of-thought-prompting-when-it-helps Chain-of-thought prompting ajuda de verdade em matemática e raciocínio simbólico, mas uma meta-análise de 2025 mostra que em outros contextos frequentemente só gera texto a mais. Como decidir antes de pagar 3 a 5x mais em tokens. Mon, 17 Aug 2026 12:00:00 GMT joaovictor.cidade@gmail.com (João Schuller) prompt-engineeringchain-of-thoughtllmotimizacao-de-tokensclaude