Respan

What Respan Does

Respan is a comprehensive LLM engineering platform that helps teams build, deploy, and improve AI agents and applications at scale. It provides a unified gateway to reach 1,000+ models across every major provider, combined with observability, evaluation, and monitoring tools that let developers trace every LLM call, measure quality in production, and optimize cost and performance.

Who It's For

Respan is built for engineering teams, product managers, and AI developers shipping production AI agents and LLM-powered applications. Whether you're scaling from 5 million to 500 million+ monthly API calls or debugging complex multi-step agent workflows, Respan provides the infrastructure layer to ship faster and break less. Trusted by world-class teams at companies like Retell AI, Mem0, Lovable, Gumloop, and AlphaSense, it's proven at scale with 80 trillion+ tokens processed.

Key Features & Capabilities

• Gateway: One API endpoint to access 1,000+ models from OpenAI, Anthropic, Google, AWS Bedrock, Azure, and more. Automatic fallbacks ensure 99.99% uptime even when individual providers fail. Built-in response caching cuts costs and latency for repeat requests, while spend limits and budgets prevent runaway costs.
• Tracing: Every LLM call, tool run, retrieval, and agent turn becomes a span in a detailed trace, showing exactly where time and cost go. Inspect inputs, outputs, latency, and tokens down to the field level.
• Evaluations: Score every output against custom evaluators combining LLM judges, deterministic checks, and human review. Sample real production traffic into test datasets, compare model/prompt versions side by side, and deploy evaluators on live traffic to catch regressions in real time.
• Monitoring: Track requests, errors, cost, latency, and tokens on a unified dashboard. Set alerts on any metric and get notified via Slack, email, or webhook the moment thresholds breach.
• Integrations: Works with Python, JavaScript/TypeScript, OpenAI SDK, LangChain, LlamaIndex, Vercel AI SDK, Mastra, and more. Connects to major providers and tools across your stack.

Security & Compliance

Respan is ISO 27001 certified, SOC 2 compliant, GDPR-operated, and HIPAA compliant with BAA available for healthcare teams. Built to meet enterprise and healthcare security standards.

What Differentiates Respan

Unlike basic observability tools, Respan combines routing, evaluation, and monitoring in one platform. The gateway ensures your agents stay up even during provider outages, while evals and tracing give you the data to ship confidently. Teams report resolving production issues 10x faster and scaling reliably to trillions of tokens.