Respan
Route, track, and debug all LLM traffic.
At a glance
Free + paid · Source review 2026-11-02- Price & billing
Official pricing page reviewed 2026-11-02: Free $0 tier (full platform, 100k logs, 1k scores, 5 datasets, 2 evaluators, 10 prompts); Team $199 per month; Enterprise contact-us pricing.
- Free allowance
Official pricing page reviewed 2026-11-02: Free $0 tier (full platform, 100k logs, 1k scores, 5 datasets, 2 evaluators, 10 prompts); Team $199 per month; Enterprise contact-us pricing.
- Best suited to
Teams running LLM agents who need one gateway, fallbacks, spend limits, evals, and tracing across many models
Fit is editorial guidance, not a measured result.- Platforms
Access: not separately verified. Operating systems not separately verified.
Published-source facts and editorial guidance. No product test is implied. Confirm current conditions before purchase.
No product screenshot is claimed for this listing. Use the official website ↗ to inspect the current interface.
What to know before choosing
Good fit
Teams running LLM agents who need one gateway, fallbacks, spend limits, evals, and tracing across many models
Limits and trade-offs
TEXT-VERIFIED: verified by official-page text fetch on 2026-11-02; not a live-browser render, and not labelled as one. The free tier's reset cycle is not stated on the pricing page. No authenticated product test was run.
Plans and free allowances
Official pricing page reviewed 2026-11-02: Free $0 tier (full platform, 100k logs, 1k scores, 5 datasets, 2 evaluators, 10 prompts); Team $199 per month; Enterprise contact-us pricing.
Evidence
Official pricing page ↗ (reviewed 2026-11-02), Official homepage ↗ (reviewed 2026-11-02)
Official published page review; no authenticated product test
Dates: Last reviewed 2026-11-02. Last reviewed is the latest source or editorial review date; it is not a content-change date.
A closer look at Respan
Respan is an LLM engineering platform built around one API gateway, automated evals, monitoring, and tracing. Point the SDK you already use at one endpoint to reach 1,000+ models with automatic fallbacks, response caching, and spend limits; score outputs with evaluators that combine an LLM judge, deterministic code checks, or human review; watch requests, errors, cost, latency, and tokens on one dashboard; and trace every LLM call, tool run, retrieval, and agent turn as spans. The homepage also lists ISO 27001, SOC 2, GDPR, and HIPAA compliance, with a BAA available for healthcare teams.
Editorial guidance based on published documentation. The workflow below is a suggested starting point, not a measured product result.
When to choose Respan
- Teams running LLM agents who need one gateway, fallbacks, and spend limits across many models
- Teams that want to grade outputs with evaluators built from real production traffic
- Teams that need request, cost, latency, and token monitoring with threshold alerts
When to choose something else
- People looking for a single-model chatbot rather than an LLM engineering platform
- Teams that do not need tracing, evals, or multi-model routing
A practical starting workflow
- Point the SDK you already use at Respan's single endpoint to route requests across 1,000+ models.
- Set fallbacks, response caching, and budgets or rate limits per key, per customer, or org-wide so one model failure or spend spike does not take you down.
- Build an evaluator from production requests sampled by filter and rate, or from an uploaded CSV, and compare model or prompt versions side by side before shipping.
- Deploy the evaluator on live traffic and watch the dashboard for cost, errors, latency, and tokens, with alerts to Slack, email, or a webhook when a metric crosses a threshold.
Check before committing
- TEXT-VERIFIED: verified by official-page text fetch on 2026-11-02; not a live-browser render, and not labelled as one.
- Vendor claims on the official page are not guarantees; actual routing, eval quality, and availability must be tested in the product.
- Prices and plan limits may change after this review; recheck the official pricing page before purchase or signup.
- The free tier's reset cycle is not stated on the pricing page reviewed, so no cycle is asserted in the contract.
Common questions
What is Respan?
Respan is an LLM engineering platform with a gateway, evals, monitoring, and tracing: it routes every model through one API, then lets teams trace, monitor, and red-team every agent run.
How does the Respan gateway handle a model failure?
You list the models to fall back to, and Respan moves to the next the moment one errors or rate-limits, so an outage never takes you down; repeat requests can also be served from cache.
How do Respan evals work?
An evaluator combines an LLM judge, a deterministic code check, or a human reviewer into one score; test cases can be sampled straight from production logs or uploaded as a CSV, and versions are compared side by side before shipping.
What does the free Respan plan include?
The pricing page lists a Free plan at $0 for getting started with the full platform, 100k logs, 1k scores, 5 datasets, 2 evaluators, and 10 prompts, with no credit card required to start.
What does the paid Team plan cost?
The pricing page lists Team at $199 per month for startups and growing teams, with unlimited datasets, evaluators, and prompts, a private Slack channel, and the SOC 2 report; Enterprise is contact-us pricing.
Compare approaches for this task
- PromptLayer — AI engineering teams managing prompts, evals, and observability
- Dify — Teams building production AI apps, agentic workflows, and RAG pipelines on one visual platform.
Sources and checks
Last source review is not a date of product testing. No rating or test result is implied by inclusion. Check the current plan and terms before buying.