How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

5 Open-Source Tools to Control Your AI API Costs at the Code Level

calendar_today July 2, 2026 person domain finout

Examines five developer-facing open-source tools including LiteLLM for budget enforcement, Langfuse for cost observability, LLMLingua for prompt compression, RouteLLM for model routing, and GPTCache for semantic caching. Notes that enterprise generative AI spending tripled to $37 billion in 2025.

open_in_new Read original post