Guides
Definitive resources on the eight topics Prism covers — written from production traffic data, not vendor estimates. Each guide anchors a cluster of deep-dive posts on its sub-topics.
Start here
AI API caching
AI API Caching
Exact, semantic, and provider-native — the three layers that cut AI bills by half.
LLM budget governance / AI FinOps
LLM Budget Governance
AI FinOps for engineering teams — budgets, audit, policy, and the patterns that work.
Multi-region LLM API / edge inference
Multi-Region LLM API
Edge inference, cache replication, and the latency budgets of going global.
Decision-stage reading
AI gateway comparison
AI Gateway Comparison
Side-by-side feature matrix for every major AI gateway in 2026.
LLM observability
LLM Observability
What to instrument first, what to skip, and the framework for picking tools.
OpenAI-compatible API
OpenAI-Compatible API
The substrate eating the LLM market — implementation, gotchas, replacement guide.