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# Stop Parsing Strings: Treating LLMs Like Type-Safe Microservices


- **Date:** Friday, Jul 10, 2026
- **Time:** 13:40–14:10 (30 min)
- **Room:** Stage 8 - powered by Red Hat
- **Event:** World Congress 2026 Europe

## Recording

[Watch recording](https://www.wearedevelopers.com/videos/100285-stop-parsing-strings-treating-llms-like-type-safe-microservices)

## Description

In 2026, "vibe coding" is a technical debt trap. Sending prompts into a black box and hoping for valid JSON is no longer an acceptable engineering standard. This session introduces a shift toward Deterministic AI Architecture, treating the LLM not as a chatbot, but as a strongly-typed microservice.

We will demonstrate how to move from "prompt engineering" to "schema engineering" using PydanticAI. We’ll cover the mechanics of structured outputs, constrained decoding, and the "Self-Healing" pattern. Finally, we’ll pull back the curtain on the "Latency Tax" and the "Reasoning Lobotomy" to show when structure helps—and when it actually hinders—your model’s intelligence.

## Speaker

### [André Behrens](https://www.wearedevelopers.com/@andre-behrens)

Senior Solution Architect at Atos


## Related talks at this congress

- [The LLM Evolution: From Sequence Imitation to Verifiable Reasoning](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1377-the-llm-evolution) — Kamen Petroff
- [When Humans Stop Writing Code: Rethinking Languages, Compilers, and Responsibility](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1118-when-humans-stop) — Simon Auer
- [Tour de Force: Open-Source LLM Inference Optimization from Simple to Sophisticated](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1094-tour-de-force-open) — Christin Pohl
- [Fine-Tuning Small Language Models for Agentic AI](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1389-fine-tuning-small) — Björn Buchhold