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Respan Gateway

API

What is Respan Gateway?

One AI gateway with built-in observability, evals, and prompt management for production LLM apps.

Respan (formerly Keywords AI) is a unified LLM engineering platform that bundles an AI gateway, observability, evaluations, and prompt management into one product. Its OpenAI-compatible gateway routes requests to 500+ models through a single endpoint with per-request provider fallback, exact-match and semantic caching, per-user and per-feature budgets, and rate limits, while every call is traced and can be scored with LLM-as-judge or human review. It adds roughly 10ms P95 latency overhead and is SOC 2 / HIPAA / GDPR aligned.

Key Features

500+ models via OpenAI-compatible API
Per-request provider fallback
Exact-match + semantic caching
Per-user/per-feature budgets and rate limits
Full tracing, evals, and prompt versioning

Use Cases

Routing and failover across LLM providers
Cost guardrails and spend attribution
Tracing and evaluating AI agents
Managing prompt versions in production
AI gatewayLLM observabilityevalsprompt managementLLMOps
See all Respan Gateway alternatives →

Frequently asked questions

What is Respan Gateway used for?
Respan Gateway is used for Routing and failover across LLM providers; Cost guardrails and spend attribution; Tracing and evaluating AI agents; Managing prompt versions in production.
What are alternatives to Respan Gateway?
Alternatives to Respan Gateway include OpenRouter, Portkey, Helicone, LiteLLM. See the full ranked list of Respan Gateway alternatives on ContentBuffer.

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