Alternatives
The right alternative depends on what you are replacing: price, AI quality, integrations, enterprise controls, or workflow focus. Start with the closest competitors, then use the related guides to narrow the decision.
Ranked by editorial fit, category overlap, and structured relationships.
An open-source and managed gateway for model routing, reliability, observability, and governance
Portkey centralizes model access, fallbacks, caching, guardrails, keys, budgets, and traces, but a gateway becomes a critical data and availability boundary that needs failure testing.
Route models and MCP tools through one observable, policy-controlled gateway
Orq.ai combines model and MCP routing, observability, budgets, redaction, governance, and managed agents, with unusually explicit usage pricing but several independent meters to model.
An open-source AI gateway with request monitoring, cost tracking, caching, fallbacks, prompts, and evaluations
Helicone combines multi-provider routing and observability behind a familiar API, but proxy trust, logged payloads, retention, usage-based costs, and gateway dependency need careful architecture review.
Look for an alternative if Not Diamond is too expensive, lacks the integrations you need, or is not strong enough for your primary workflow.
Compare output quality, setup time, pricing limits, supported models, API access, and whether the tool fits your team’s existing systems.
Shortlist two options, run the same real workflow through both, and keep the one that reduces rework rather than the one with the longest feature list.