#copilotcowork — Public Fediverse posts
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🟪 Copilot Cowork model cost test
Three models ran the same prompt and produced a 2.7x cost spread. Sonnet billed $3.98 Opus billed $4.77 and GPT 5.5 billed $10.69. Copilot Cowork GA on 16 June 2026 charges credits at $0.01 each. Model choice now hits your bill yet the picker hides price details. 💡
💡 Cost spread 2.7x across models
🔍 Same prompt identical outputs different bills
⚖️ Model choice drives monthly spend -
Why did Microsoft publish their Copilot Cowork cost estimator tool as an Excel workbook? Didn't the team have enough Copilot Credits to build an online tool with Cowork?
Since I still had free Frontier credits for Opus 4.8 in Cowork, I decided to build a better version: https://cowork.licensing.guide