Production-grade observability, evals, and prompt management — ready in minutes. Stop building logging infrastructure and start building what your users want.
Free tier to start. Two-line setup. No infrastructure to deploy.
Everything an early-stage team needs to ship and monitor AI features — ready from day one, free to start.
Skip the infra work
Don't build a logging pipeline, cost dashboard, or prompt versioning system. Respan ships all of it, ready from day one.
Debug in seconds, not hours
When a user reports a problem, find the exact request, see the full trace, and identify the issue — without adding print statements.
Track every dollar
Know which features, models, and users drive LLM spend. Make cost-quality tradeoffs with data, not guesses.
Measure quality from day one
Run automated evals on every output. Establish quality baselines before you have enough users to notice problems manually.
Iterate on prompts fast
Edit prompts from the dashboard. A/B test variants. See quality impact immediately. No deploy required.
Two-line setup
Wrap your LLM client with the Respan SDK. Everything is captured automatically. Under 5 minutes from signup to first log.
Free tier to start
Generous free tier that covers early-stage usage. Upgrade only when your product takes off. No credit card to start.
Scale without ripping out
Same SDK and dashboard from your first request to millions of daily calls. No migration, no re-architecture.
Build fast
Ship with confidence
Grow sustainably
From signup to production-grade observability in under 5 minutes.
Sign up free
Create an account. No credit card required. Generous free tier covers early-stage usage.
→ Account ready
Add the SDK
Wrap your OpenAI, Anthropic, or framework client with Respan. Two lines of code.
→ Every call logged automatically
Search and debug
Find any request instantly. Trace agent pipelines. See exactly what happened and why.
→ Fast debugging
Evaluate and iterate
Run quality evals, update prompts, track the impact. All from the dashboard.
→ Better outputs, shipped faster
<5 min
from signup to first log
Free
tier to start
2 lines
of code to set up
Zero
infrastructure to deploy
Model providers
Frameworks
Languages