Not Diamond - 2026 Pricing, Features, Reviews & Alternatives

Not Diamond is a cloud-based intelligent AI model routing and prompt optimization platform delivered via REST, Python, and TypeScript SDKs. Designed for engineering teams and AI-driven product organizations, it analyzes each query at runtime and routes it to the most suitable large language model (LLM) from a configurable pool of providers, balancing accuracy, latency, and cost without requiring manual model selection. The platform supports integration with major LLM providers and fits into existing inference pipelines with minimal configuration overhead.

The routing engine evaluates payload semantics, KV cache state, implicit feedback signals, and provider-level performance telemetry to make per-request dispatch decisions. Prompt optimization tooling rewrites and refines prompts before dispatch, improving output quality across heterogeneous model backends. Teams gain granular observability through dashboards that surface per-model latency, cost attribution, quality scores, and routing decision traces, enabling data-driven iteration on model strategy.

Not Diamond targets mid-market to enterprise software teams operating multi-model AI stacks who need to reduce inference spend, improve response quality, and maintain flexibility across LLM providers. The platform's configuration layer allows teams to define routing policies by task type, cost ceiling, or latency threshold, giving engineering and product leads direct control over the cost-quality tradeoff without redeploying application logic.