Respan (formerly Keywords AI)
Trace, evaluate, and improve AI agents
At a glance
- Editor score9.0 / 10
- PricingFree plan · paid from $199/mo (annual)
- Best forEnterprises needing gateway and observability breadth
- Free planYes
- Paid from$199/mo
- LLM tracingYes
- Facts checked20 Sep 2026
Where it wins
- Traces LLM, agent, retrieval, embedding, tool-call, and RAG workflows
- Combines evaluations, prompts, experiments, alerts, and cost monitoring
- Supports cloud and self-hosted deployment with OpenTelemetry and major frameworks
Where it doesn't
- Team access starts at $199 per month with annual billing
- The breadth may exceed the needs of teams seeking basic tracing only
- Enterprise features use custom packages rather than published pricing
Our verdict on Respan (formerly Keywords AI)
Respan, formerly Keywords AI, is an AI engineering and observability platform for teams building LLM and agent applications. It records LLM calls and multi-step agent workflows as nested traces, including retrieval, embedding, tool-call, and RAG activity. Teams can also monitor tokens, latency, requests, errors, and costs; manage prompt versions; evaluate outputs; and create datasets, experiments, and alerts. Its unified model gateway adds fallbacks, retries, caching, and load balancing for model traffic.
The Free plan includes the full platform, 100k logs, 1k scores, 5 datasets, 2 evaluators, and 5 prompts at $0. The Team plan costs $199 per month with annual billing and adds unlimited datasets, evaluators, and prompts, along with a private Slack channel and a SOC 2 report. Enterprise uses custom packages and adds volume discounts, custom SLAs, a dedicated support engineer, and a HIPAA BAA. The paid entry point makes Respan a more natural fit for teams that need ongoing evaluation and gateway controls than for small projects requiring only basic visibility.
Its ecosystem coverage is broad: integrations include OpenAI, Anthropic, Google GenAI, AWS Bedrock, Azure OpenAI, OpenAI Agents, Claude Agent SDK, Vercel AI SDK, Pydantic AI, CrewAI, Haystack, LangChain, LangGraph, LlamaIndex, and Chroma. OpenTelemetry and framework instrumentation extend that fit, while web, API, and self-hosted options support different deployment needs. Choose Respan when tracing, evaluations, prompt management, cost controls, and agent visibility need to sit together. Teams seeking a narrowly focused tracing tool may find this scope and the Team pricing unnecessary.
Respan (formerly Keywords AI) pricing
All 3 Respan (formerly Keywords AI) plans and prices →
Respan (formerly Keywords AI) fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $199/mo |
| LLM tracing | Yes |
| LLM evaluations | Yes |
| Prompt management | Yes |
| Agent tracing | Yes |
| Retrieval tracing | Yes |
| Token cost tracking | Yes |
| Deployment options | Both |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Compliance & security | SOC 2, ISO 27001, GDPR, HIPAA, SSO/SAML |
| Support | Email, Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 171+ integrations: OpenAI, Anthropic, Google GenAI, AWS Bedrock, Azure OpenAI, OpenAI Agents … See all → |
| Pricing | Free plan · paid from $199/mo (annual) (source) |
| Website | respan.ai |
| Facts checked | 20 Sep 2026 |
Respan (formerly Keywords AI) integrations
Respan (formerly Keywords AI) lists 171+ integrations on its own site — the 20 named here are the ones its pages call out.
- OpenAI
- Anthropic
- Google GenAI
- AWS Bedrock
- Azure OpenAI
- OpenAI Agents
- Claude Agent SDK
- Vercel AI SDK
- Pydantic AI
- CrewAI
- Haystack
- LangChain
- LangGraph
- LlamaIndex
- Chroma
- Milvus
- Pinecone
- Qdrant
- Weaviate
- Slack
See all Respan (formerly Keywords AI) integrations →
Alternatives to Respan (formerly Keywords AI)
- Arize AXBroad LLM observability with tracing, evaluations, prompts, agents, RAG, and cost tracking.9.0
- LangfuseA broad observability platform with open-source deployment and accessible paid tiers.9.0
- Arize PhoenixA free platform for tracing, evaluating, and improving LLM applications.9.0
See all Respan (formerly Keywords AI) alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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