Microsoft Decision-1 vs Jev: Which Decision Model to Use?

Microsoft Decision-1 picks from the choices you give it instead of writing text. In this demo it costs $10 per million test-failure triages, versus $1,100 with GPT-5.2. I deploy Microsoft Decision-1 in Microsoft Foundry, try it in the playground, then run the same test-failure triage through Decision-1 and GPT-5.2 Chat in code. You'll see the difference in cost and speed. What you'll learn: - What a decision model is (think MCQ exam vs essay) and why it's cheaper and faster - Microsoft Decision-1 benchmarks: accuracy, latency (~85 ms) and calibration vs Jev - How to deploy a base model in Microsoft Foundry (Build → Models → Deploy) - Sending JSON input with criteria and choices, and reading the confidence scores - Why you aren't charged for output tokens - Using a decision model to triage test failures: product bug, flaky test or environment issue Chapters: 0:00 What Microsoft Decision-1 Is 0:33 Decision Models Explained (Like an MCQ Exam) 1:23 Benchmarks: Accuracy, Latency, Calibration 2:15 Microsoft Foundry & the Jev Series 3:05 Deploy Decision-1 in Foundry 3:37 Playground Demo: JSON Input & Scores 4:42 No Output Token Charges 5:17 Run It in Code: Decision-1 vs GPT-5.2 6:16 Cost: $10 vs $1,100 per Million Triages 6:49 When to Use a Decision Model + OpenRouter 7:05 Live Run: Latency Comparison Resources mentioned: 💻 Code (copy and run): https://github.com/gauravkhuraana/jev-qa-demos/ 📊 Microsoft's Decision-1 announcement and benchmarks: https://commandline.microsoft.com/microsoft-decision-1-model-foundry/ 📘 What is Jev? Decision models explained: https://gauravkhurana.com/docs/AI/ai-models-concepts/#what-is-jev-system-1-ai-explained No Foundry access? The model is also available on OpenRouter. Watch next: ▶ Microsoft Foundry - AI Platform (playlist): https://www.youtube.com/playlist?list=PLeGiFBPpRC04 ▶ Free Azure account with $200 credit: https://youtu.be/QZjRUTHhpdw Connect: 🎓 Courses: https://gauravkhurana.com/courses 🌐 Website: https://gauravkhurana.com 📅 1:1 mentoring: https://topmate.io/gauravkhurana #MicrosoftFoundry #AIForTesters #DecisionModel #SoftwareTesting #SharingIsCaring