flatkey.ai Blog

Grok 4.3 vs GPT-5: Benchmarks, Pricing, and When to Route Each

A source-backed routing guide for teams comparing Grok 4.3 and GPT-5 on pricing, context, benchmark design, migration timing, and when to use a gateway.

Rent a GPU Server: Architecture, Performance, and Cloud Deployment Guide

Learn how to rent a GPU server with the right allocation, topology checks, deployment stages, and acceptance tests before committing to capacity.

Low GPU Utilization in LLM Inference: Find CPU, Data, Network, and Batching Bottlenecks

A step-by-step diagnosis for low GPU utilization in LLM serving: baseline metrics, CPU and tokenizer checks, batching and KV cache, plus a reproducible CPU-bottleneck experiment.

GPU Server Rack: Architecture, Performance, and Cloud Deployment Guide

A practical guide to mapping, validating, and deploying rack-scale GPU capacity for AI workloads.

PII Redaction API Guide (2026): AWS, Google Cloud, Azure, and Presidio Compared for LLM Apps

A PII redaction API finds and masks personal data in text. Compare Amazon Comprehend, Google Sensitive Data Protection, Azure Language PII and Presidio, with code, pricing units, real detection results and an LLM redaction pipeline.

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