Respan (formerly Keywords AI)

Route 1,000+ AI models through one API with tracing, monitoring, budgets and automated evals

gatewaymonitoring
Websitewww.respan.ai
CategoryAI & machine learning
PricingFreemium
Card requiredNo
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ABOUT

What is Respan (formerly Keywords AI)?

Respan is the current name of Keywords AI. It combines an AI router for 1,000+ models with tracing, monitoring, budgets, rate limits, caching and automated evaluations in one platform.

BEFORE YOU SIGN UP

What you should know

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One gateway for 1,000+ modelsRespan exposes one endpoint across major providers and lets applications switch models while keeping tracing, budgets and routing in the same control plane.
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Built-in evaluation toolsCompare model outputs, track costs and run evaluations directly in the platform without third-party tooling.
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Rebranded from Keywords AIThe current official product and domain are Respan; the company footer still identifies Keywords AI, Inc., while the product now uses the Respan brand.
✕
Inference costs are separateRespan is the gateway and observability layer; model inference remains a separate provider cost rather than being bundled into the platform price.

COMMUNITY

From the forums

On Reddit and dev forums, Keywords AI is recognized for its clean UI and practical model evaluation features. Users appreciate the ability to compare model outputs side by side with consistent prompts. Some express frustration that meaningful evaluation workflows quickly hit the free tier monthly log limit.

— Community sentiment

💬Discuss on Reddit ↗

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ABOUT US

Honest, independent, no fluff.

No paid placements. Just a clear look at what this does, what it costs, and what to know before you commit.

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FAQ

Questions, answered.

What happened to Keywords AI?＋

Keywords AI is now branded as Respan. The current official product focuses on routing, tracing, monitoring, budgets and evaluations across 1,000+ models.

How many models does Respan support?＋

The current official site advertises access to more than 1,000 models across major providers through one API.