Replace one line in your code. Get request logging, cost tracking, and agent tracing across OpenAI, Anthropic, and Gemini — instantly.
Before
base_url = "https://api.openai.com"
After
base_url = "https://proxy.spanlens.io/openai"
That's it. Every request is now tracked.
No SDK installation, no code changes beyond the base URL.
Paste your OpenAI, Anthropic, or Gemini API key. We encrypt it at rest.
Copy your API key and the proxy base URL for your provider.
See every request, cost, latency, and token count in your dashboard.
Per-request cost breakdown across all providers and models.
p50 / p95 latency per model so you can spot regressions instantly.
Visualize multi-step agent flows as Gantt/waterfall span trees.
Run on your own infra with a single Docker command. Your data stays yours.