Portkey
AI gateway routing 1,600+ models with built-in logging, cost tracking, caching and guardrails; observability comes as a side effect of the proxy layer.
| Category | Observability & Tracing |
| Open source | Yes |
| Self-hostable | Yes |
| Pricing model | freemium |
| Pricing notes | OSS gateway free (MIT); cloud free tier + paid plans; enterprise via Palo Alto Networks |
| Framework integrations | openai-sdk, anthropic, langchain, llamaindex, vercel-ai, litellm |
| Funding / ownership | $15M Series A (Elevation, Feb 2026); acquired by Palo Alto Networks (May 2026) |
Pricing/feature source: https://portkey.ai/pricing