Unit 11 · Ship AI systems you can operate

Fall back without changing your app contract

You route across models by capability, health, latency, price, or application policy. A fallback preserves the typed contract and remains observable.

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Unit example (nearest native match)

See the idea in context

var program = Ax.ax("text:string -> label:string");
var usage = program.getUsage();

Run itIn your own project

// Gradle (build.gradle):
implementation 'dev.axllm:ax:22.0.4'
// Maven (pom.xml):
<dependency>
  <groupId>dev.axllm</groupId>
  <artifactId>ax</artifactId>
  <version>22.0.4</version>
</dependency>

import dev.axllm.ax.Ax;

var llm = Ax.ai("openai", Map.of("apiKey", System.getenv("OPENAI_API_KEY")));
var classify = Ax.ax("review:string -> sentiment:class \"positive, negative, neutral\"");

Set OPENAI_APIKEY in your environment before running provider-backed code.

In the ax repo

From a clone of the ax repo:

npm run example -- java src/examples/java/long-agents/SmartDefaultsAgentExample.java

Active practice

Show that you can use it

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Keep exploring

See the idea in context

Show that you can use it

Source-backed follow-up