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The Check Passes. We Still Do Not Believe It.
A National Insurance number has no check digit. HMRC has never published the one for a UTR. Building the UK detection profile meant deciding what a scanner may claim...
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Structured Output Isn't Reliable Output
JSON mode, function calling and constrained decoding give you schema compliance, not semantic reliability. Valid JSON can be completely wrong.
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From 11% to 88% GPU Utilization: How We Built 8x Faster LLM Inference
PyTorch leaves 89% of GPU bandwidth on the table. We fixed it with custom Triton kernels. Here's what we learned building Accelerate.