Respan for Startups
Production-grade observability, evals, and prompt management — ready in minutes. Stop building logging infrastructure and start building what your users want.
Proven at scale
Free tier to start. Two-line setup. No infrastructure to deploy.
What you get
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.
How startups use Respan
Build fast
- →Skip building custom logging and jump to product work
- →Instrument new AI features in minutes, not days
- →Use the free tier for development and testing
- →Deploy prompts without engineering bottlenecks
Ship with confidence
- →Run quality evals before every release
- →Debug user-reported issues in seconds
- →Track quality baselines from your first users
- →Compare model options with real production data
Grow sustainably
- →Track and control LLM costs as usage grows
- →Show concrete quality metrics in investor updates
- →Scale the same tooling from 10 to 10M requests
- →Onboard new engineers with shared dashboards
How it works
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
By the numbers
<5 min
from signup to first log
Free
tier to start
2 lines
of code to set up
Zero
infrastructure to deploy
Works with your stack
Model providers
- OpenAI
- Anthropic
- Google Gemini
- Groq
- Mistral
- Together AI
- Any OpenAI-compatible endpoint
Frameworks
- LangChain
- LlamaIndex
- Vercel AI SDK
- Mastra
- CrewAI
- OpenAI Agents SDK
Languages
- Python
- TypeScript / JavaScript
- Any language via REST API