Respan (formerly Keywords AI)
Unified gateway-plus-observability control plane for tracing and evaluating agent behavior, rebranded from Keywords AI.
| Category | Observability & Tracing |
| 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