cost-optimization
Model Routing and Cascades: Spending Frontier Money Only Where It Buys Something Lesson
Model routing sends each request to the cheapest model that can handle it, and cascades escalate to a stronger model only when a cheaper one is not confident, which cuts serving costs substantially because most production traffic is easy.
A Show HN Promised Frontier Quality for Half the Cost. Its Repo Describes a Router. News
World Model Optimizer turns agent traces into a policy that sends easy requests to cheap models and hard ones to a frontier endpoint, but its headline savings claim shifted between the repository and the post, and no distilled model has been released.
World Model Optimizer Tool
A pip-installable CLI that turns the OpenTelemetry traces your agents already emit into a routing policy: it scores every model you have registered against held-out tasks from your own traffic, then serves an endpoint that sends easy requests to cheap models. Treat the routing as the product; the distillation half has no released checkpoint yet.
OmniRoute Tool
A free open-source AI gateway that unifies 230-plus model providers (including many free tiers) behind one endpoint, with token-compression, smart auto-fallback, and multi-agent protocol support, available as a desktop app and PWA.
NeMo Switchyard Tool
NVIDIA's library for routing each task in a multi-model system to the model best suited to it, so a frontier model handles planning while a cheaper one handles execution. Shipped alongside Nemotron 3.5 Lightning as the connective tissue for mixed-model agent stacks.
Headroom Tool
A drop-in proxy that sits between your coding assistant and the AI model and automatically compresses bulky tool outputs, logs, and retrieved text before they reach the model — cutting token usage sharply without changing your code.
Doubleword (async + batch inference) Tool
Run the same models you already use, but on async and batch tiers that trade latency for a large cost cut on workloads that don't need an instant reply: long-running agents, evaluations, and bulk jobs.