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📰 Dev.to · GWEN

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Why Your AI Model Selection Strategy Is Probably Wrong

Dev.to · GWEN 🧠 Large Language Models ⚡ AI Lesson 1mo ago

Why Your AI Model Selection Strategy Is Probably Wrong

Most teams choose an AI model once and call it done. They pick GPT-4, Claude, or Gemini based on a...

Why Structured Output Fails in Production—and How to Fix It

Dev.to · GWEN 🧠 Large Language Models ⚡ AI Lesson 1mo ago

Why Structured Output Fails in Production—and How to Fix It

Getting an LLM to return JSON in a demo is easy. Getting it to return valid, complete,...

Practical Multi-Model API Integration: Designing a Switchable, Observable, and Rollback-Friendly LLM Layer

Dev.to · GWEN 🧠 Large Language Models ⚡ AI Lesson 2mo ago

Practical Multi-Model API Integration: Designing a Switchable, Observable, and Rollback-Friendly LLM Layer

When teams integrate large language models, the first step is usually connecting to a model’s API....

RAG is Great, But Why Does My LLM Still "Forget" Key Context?

Dev.to · GWEN 🧠 Large Language Models ⚡ AI Lesson 2mo ago

RAG is Great, But Why Does My LLM Still "Forget" Key Context?

Hey everyone,You've meticulously set up your Retrieval Augmented Generation (RAG) system. You've got...

Tool calling Returns HTTP 200, But I “Assumed” the Tool Ran — Have You Seen This?

Dev.to · GWEN 🧠 Large Language Models ⚡ AI Lesson 2mo ago

Tool calling Returns HTTP 200, But I “Assumed” the Tool Ran — Have You Seen This?

I’ve been building LLM apps and keep running into a really nasty failure mode: The request looks...

Beyond "Invalid JSON": Engineering Robust Structured Outputs from LLMs

Dev.to · GWEN 🧠 Large Language Models ⚡ AI Lesson 2mo ago

Beyond "Invalid JSON": Engineering Robust Structured Outputs from LLMs

We’ve all been there: Your prompt explicitly says, "Return ONLY a JSON object." But the LLM, in its...

Why Your LLM App is Getting Slower (and More Expensive): The TTFT & Context Crisis

Dev.to · GWEN 🧠 Large Language Models ⚡ AI Lesson 2mo ago

Why Your LLM App is Getting Slower (and More Expensive): The TTFT & Context Crisis

In the early stages of building an LLM app, everything feels fast. But as you add RAG...

Tool Calling That “Works” But Never Executes (Silent Failure After HTTP 200)

Dev.to · GWEN 🧠 Large Language Models ⚡ AI Lesson 2mo ago

Tool Calling That “Works” But Never Executes (Silent Failure After HTTP 200)

Tool calling failures are the silent killers of LLM apps. Your API call returns HTTP 200, the model...

Streaming Interrupted: How to Debug “Successful” LLM Streams (Before Support Tickets Start)

Dev.to · GWEN 🧠 Large Language Models ⚡ AI Lesson 2mo ago

Streaming Interrupted: How to Debug “Successful” LLM Streams (Before Support Tickets Start)

Streaming failures are the worst kind of incidents: your API call can look successful while users...

I got tired of managing separate APIs for GPT, Claude, Gemini, DeepSeek, and Qwen

Dev.to · GWEN 🧠 Large Language Models ⚡ AI Lesson 2mo ago

I got tired of managing separate APIs for GPT, Claude, Gemini, DeepSeek, and Qwen

I’ve been building with LLM APIs for a while, and one thing that keeps getting annoying is not the...

A Minimal Way to Test GLM-5.2 with an OpenAI-Compatible API

Dev.to · GWEN 🧠 Large Language Models ⚡ AI Lesson 2mo ago

A Minimal Way to Test GLM-5.2 with an OpenAI-Compatible API

When a new model comes out, I usually do not want to start by rebuilding my integration around...