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Respan

An LLM engineering platform combining an AI gateway, observability, evaluations and prompt optimisation for teams building AI apps.

PricingFreemium
Free planYes
UrduLimited / no

Best for: Engineering teams shipping LLM-powered features

Visit Respan

Respan gives developers one place to manage calls to large language models. Its gateway lets you route traffic to over 1,000 models through a single endpoint with automatic fallbacks, while traces and metrics show what each call did and how much it cost.

Teams can also run evaluations and optimise prompts to improve reliability over time. It suits engineering teams shipping AI features who need visibility into model behaviour and spending. You can start by getting an API key.

Key features

  • Single gateway to 1,000+ models
  • Automatic model fallbacks
  • Tracing and spend metrics
  • Evals and prompt optimisation

Prices and features change often; check the official website for the latest plans. Last updated September 24, 2026.

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