What is Respan?
Respan is a platform for teams building AI agents and LLM apps. It combines a gateway, observability and evaluations. The gateway lets you send every request to one endpoint that reaches over 1,000 models from major providers, with automatic fallbacks when a model errors or is rate-limited, response caching, key vault for your own keys, and spend and rate limits per key, customer or organization.
The observability layer traces every agent run, tracks cost and usage, and supports alerts and custom dashboards. The evals layer lets you score outputs with an LLM judge, a code check or human review queues, build datasets from production logs, and compare two prompts or models on the same test set before shipping. Evaluators can also run on sampled live traffic to catch regressions. The product is cloud-based and integrates with the OpenAI SDK, LangChain, Vercel AI SDK and others.
Key features
- One API endpoint for 1,000+ models with fallbacks and load balancing
- Response caching and spend/rate limits per key, customer or org
- Tracing and observability for agent runs with alerts and dashboards
- LLM-as-judge, code and human evaluators with datasets from production logs
- Side-by-side comparison of prompts or models on the same dataset
- Prompt management with version control and one-click deployment
Who is it for
- AI engineers building agents and LLM apps
- Teams running LLM features in production
- Companies needing monitoring and evaluation of AI outputs
Pros and cons
- Single API for many models with automatic fallback
- Evals and tracing in one platform
- Free plan has limited logs (100k) and evaluators (2)
- Advanced features and self-hosting require the Enterprise plan
Respan pricing
| Plan | Price | Includes |
|---|---|---|
| Free | 0 USD | 100k logs, 1k scores, 5 datasets, 2 evaluators, 5 prompts, 412 requests/min, 7-day retention, community support |
| Team | 199 USD / month | Billed yearly (per month price shown with 17% discount); unlimited datasets, evaluators and prompts, 100k logs, 10k scores, 5 seats, 8,400 requests/min, 30-day retention, SOC 2 report, email support |
Prices copied from Respan pricing, checked October 12, 2026. Currency as shown by the vendor; taxes may apply.
Is Respan free?
Yes, there is a free plan. Free plan: full platform, 100k logs, 1k scores, 5 datasets, 2 evaluators, 5 prompts, 1 workspace, 7-day retention.
Respan alternatives
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 Cline | not listed | yes | APIs & models |
 Ollama | 20 USD/mo | yes | APIs & models |
 Amazon Bedrock | od 0,20 USD | ? | APIs & models |
 Claude Platform (Anthropic API) | 2 USD input / 10 USD output | no | APIs & models |
 Groq | not listed | ? | APIs & models |
 Bifrost | not listed | yes | APIs & models |
FAQ
What is Respan used for?
AI router with one API for 1,000+ models, plus tracing, evals and monitoring for AI agent teams.
Is Respan free?
Yes, there is a free plan. Free plan: full platform, 100k logs, 1k scores, 5 datasets, 2 evaluators, 5 prompts, 1 workspace, 7-day retention.
How much does Respan cost?
The cheapest paid plan is 199 USD/mo (vendor pricing, October 12, 2026).
What are the best Respan alternatives?
Closest alternatives: Cline, Ollama, Amazon Bedrock, Claude Platform (Anthropic API), Groq.
Data checked October 12, 2026 on the vendor website (keywordsai.co).