Post by JetBrains

Name: The latest Sonnet model from Anthropic – Claude Sonnet 5 – is already in your JetBrains IDE. Our co
Uploaded: 2026-06-30T19:32:50.818Z
Channel: JetBrains
Description: The latest Sonnet model from Anthropic – Claude Sonnet 5 – is already in your JetBrains IDE. Our colleague Kristel Cocoli gave it one prompt and a dataset of 49,000 international matches. It built a

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The latest Sonnet model from Anthropic – Claude Sonnet 5 – is already in your JetBrains IDE. Our colleague Kristel Cocoli gave it one prompt and a dataset of 49,000 international matches. It built a full World Cup predictor from scratch. The result: 58.1% accuracy. Random guessing gets you 33%. What impressed us most wasn't the accuracy. It was that Claude Sonnet 5 made the methodological decisions itself – and explained every trade-off clearly. Try it in JetBrains AI Assistant, Junie and Air today!

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