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Not Diamond

Route each query to a model

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What Not Diamond is

Not Diamond is a model routing and cost control platform. It recommends a suitable model for each request, helps agent systems keep model invocation cost under control, and can be used to compare model performance and routing strategies.

What you can do with it

  • Route queries to different models automatically
  • Track and reduce model spend
  • Compare models on your own traffic
  • Adjust routing rules

Who it is for

  • AI application developers
  • Agent system teams
  • Platform engineers and model operators

What to watch out for

  • Routing results need continuous verification against an evaluation set
  • Critical tasks should not depend solely on automatic recommendations
  • Routing introduces another component in the request path, with its own latency and failure modes
  • Confirm current provider coverage

Pros & cons

✓ What we like

  • Cost and accuracy trade-off handled per request
  • Comparison tooling included
  • Useful for multi-model setups

! What to watch out for

  • Needs ongoing evaluation
  • Extra dependency in the request path
  • Not for unaudited critical decisions

FAQ

What is it for?

Selecting suitable models per query and controlling invocation cost.

Can it replace judgement?

No. Routing must be verified against your own evaluation set.

What should I prepare?

An evaluation set and the models you want to compare.

Last reviewed: 2026-09-17

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