Jev + OpenAI GPT-4o / GPT-5: Architectural Guide & Benchmarks

          import { TypeSafeClient } from '@typesafe/sdk';
import OpenAI from 'openai';

const typesafe = new TypeSafeClient({ apiKey: process.env.TYPESAFE_API_KEY });
const openai = new OpenAI();

export async function executeAgentAction(gameState: Record<string, unknown>) {
  // Step 1: System 1 evaluates state in ~100ms with calibrated confidence
  const decision = await typesafe.evaluate({
    model: 'jev-1.1',
    state: gameState,
    query: {
      action: ['ATTACK', 'RETREAT', 'EXPLORE', 'REQUEST_REASONING'],
      confidence_threshold: 0.85
    }
  });

  // Step 2: If Jev is confident, act immediately without invoking GPT
  if (decision.confidence >= 0.85 && decision.choice !== 'REQUEST_REASONING') {
    return { executedBy: 'JEV_SYSTEM_ONE', action: decision.choice, latencyMs: decision.latency };
  }

  // Step 3: Escalate to GPT only when deliberate reasoning is necessary
  const gptResponse = await openai.chat.completions.create({
    model: 'gpt-4o',
    messages: [
      { role: 'system', content: 'Analyze complex game edge case.' },
      { role: 'user', content: JSON.stringify({ gameState, priorDecision: decision }) }
    ]
  });

  return { executedBy: 'GPT_SYSTEM_TWO', action: gptResponse.choices[0].message.content };
}