# Respan

> Respan is an **LLM engineering platform** that unifies observability, evals, prompt optimization, and a unified LLM gateway. It helps teams trace agent workflows, evaluate behavior, and continuously improve quality in production. Backed by Y Combinator (W24) and Gradient Ventures. Processing 80+ trillion tokens for world-class founders, engineers, and product teams.

## Docs

For the full API and SDK documentation, see: https://respan.ai/docs/llms.txt

For the full documentation content in a single file, see: https://respan.ai/docs/llms-full.txt

## Platform

- [Observability](https://respan.ai/platform/observability): Trace and monitor LLM requests, agent workflows, and token usage in real time.
- [Evaluations](https://respan.ai/platform/evaluations): Evaluate agent behavior with automated evals, scoring, and regression detection.
- [Prompt Optimization](https://respan.ai/platform/prompt-optimization): Iterate on prompts with versioning, A/B testing, and performance tracking.
- [AI Gateway](https://respan.ai/platform/ai-gateway): Unified LLM gateway with routing, fallbacks, caching, and load balancing across providers.

## Integrations

For the full integrations list with links, see: https://respan.ai/docs/integrations/overview.md

- Agent Frameworks: OpenAI Agents SDK, Claude Agent SDK, Vercel AI SDK, LangGraph, LangChain, Mastra, Agno, PydanticAI, Haystack
- LLM SDKs: OpenAI SDK, Anthropic SDK, Google GenAI SDK, LiteLLM, LlamaIndex, RubyLLM
- Coding Agents: Claude Code, Gemini CLI, Codex CLI, OpenCode, Cursor
- Vector DBs: ChromaDB, Pinecone, Qdrant, Milvus, Weaviate, LanceDB, Marqo
- Model Providers: OpenAI, Anthropic, Gemini, DeepSeek, Groq, Mistral, OpenRouter, Fireworks AI, Together AI, Perplexity AI, AWS Bedrock, Google Vertex AI, Azure OpenAI
- Others: BAML, Instructor, Superagent, Langfuse, Braintrust, PostHog, Mem0, AssemblyAI, Zapier

## Solutions

- [AI Teams](https://respan.ai/solutions/ai-teams)
- [Developers](https://respan.ai/solutions/developers)
- [Startups](https://respan.ai/solutions/startups)
- [Enterprise](https://respan.ai/solutions/enterprise)
- [Product Managers](https://respan.ai/solutions/pms)
- [Data Scientists](https://respan.ai/solutions/data-scientists)