What are the best alternatives to Respan?

The best alternatives to Respan include LangSmith, Helicone. Each offers unique features for different use cases.

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Respan

Unified LLM observability, evaluations, prompt optimisation and AI gateway in one platform

freemiumFree is $0 with full platform access, 100k logs, 1k scores, 5 datasets, 2 evaluators, 5 prompts and 1 workspace. Team is $199/month (17% off annually) with 100k logs, 10k scores, unlimited datasets and workspaces, and 5 members; additional logs are $8 per 100k, additional scores $1 per 1k, and additional seats $15 per member. Enterprise is custom-priced with volume discounts, custom SLAs, a dedicated support engineer and a HIPAA BAA. HIPAA compliance is a $249/month add-on.View full pricing →

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About Respan

Respan is an LLM engineering platform that unifies four things teams usually buy separately: observability and tracing, evaluations, prompt optimisation, and an AI gateway. The workflow it describes runs trace, evaluate, optimise, deploy, monitor — so the same platform that records what your agent did also scores it and feeds the result back into the prompt. The integration surface is unusually wide for an independent tool: Python and JS/TS SDKs, plus native support for the OpenAI SDK, OpenAI Agents SDK, Vercel AI SDK, Mastra, LangChain, LlamaIndex, Google GenAI, Mem0, Cognee, AssemblyAI, Linkup and PostHog. On the model side the Respan Gateway fronts OpenAI, Anthropic, OpenRouter, Groq, Fireworks, Together AI, Perplexity, Azure OpenAI, AWS Bedrock and Google Vertex, so provider routing is part of the platform rather than a separate proxy. Metering is transparent and per-unit: logs and evaluation scores are the billed dimensions, with published overage rates of $8 per 100k additional logs and $1 per 1k additional scores, and additional seats at $15 per member on the Team plan. Enterprise adds custom SLAs, a dedicated support engineer and a HIPAA BAA, with PII masking and SOC 2 reporting; HIPAA compliance is a $249/month add-on.

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Key Features

✓Tracing, evaluations, prompt optimisation and an AI gateway in one platform

✓Python and JS/TS SDKs plus native OpenAI, Vercel AI SDK, LangChain, LlamaIndex and Mastra integrations

✓Gateway fronting OpenAI, Anthropic, OpenRouter, Groq, Fireworks, Together, Perplexity, Azure, Bedrock and Vertex

✓Agent tracing with cost and usage tracking

✓Published per-unit overage rates for logs and scores

✓PII masking, log omission and SOC 2 reporting

✓Generous free tier at 100k logs and 1k scores

Respan Pros & Cons

✅ Pros

+Bundling gateway, tracing and evals removes two vendors from a typical LLM stack
+Overage pricing is published per unit rather than hidden behind a sales call
+The free tier at 100k logs is large enough to run a small production app
+Integration breadth means it fits an existing stack rather than forcing a rewrite
+Unlimited seats on the free tier is unusual and helps team adoption

⚠️ Cons

−$199/month is a significant jump for a small team crossing the free limits
−Routing production traffic through a vendor gateway adds a dependency in the request path
−HIPAA as a $249/month add-on doubles the effective cost for healthcare teams
−Broad scope means it may be shallower than specialists in any single dimension