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Respan (formerly Keywords AI)
Unified gateway-plus-observability control plane for tracing and evaluating agent behavior, rebranded from Keywords AI.
| Category | Observability & Tracing |
| OpenTelemetry-native | Yes — no proprietary-SDK lock-in |
| Open source | No |
| Self-hostable | No |
| Pricing model | freemium |
| Pricing notes | Free tier + paid plans |
| Framework integrations | openai-sdk, anthropic, langchain, vercel-ai |
| Funding / ownership | YC W24 |
Pricing/feature source: https://www.respan.ai
Frequently asked questions
Is Respan (formerly Keywords AI) open source?
No — Respan (formerly Keywords AI) is a proprietary/commercial product.
Can I self-host Respan (formerly Keywords AI)?
No — Respan (formerly Keywords AI) is cloud-only; there is no self-hosted deployment.
Is Respan (formerly Keywords AI) OpenTelemetry-native?
Yes — Respan (formerly Keywords AI) speaks OpenTelemetry (OTLP) natively, so there is no proprietary-SDK lock-in.
How much does Respan (formerly Keywords AI) cost?
Freemium. Free tier + paid plans