# respan.ai

> AI-optimized mirror of respan.ai containing 50 pages totalling 48,971 words of clean markdown content, structured data, and semantic HTML. Original source: https://respan.ai. Last updated: 2026-09-12T04:43:20.564Z.

Each page is available as HTML (with JSON-LD structured data) and Markdown (text-only, ideal for LLMs and RAG).

## Homepage

- [Respan | LLM Engineering Platform](/content/site-root.html): Respan unifies LLM observability, evals, prompt optimization, and an AI gateway so teams can ship reliable AI applications. (1,039 words)

## Articles & Blog Posts

- [10 Best LLM Gateways in 2026 (Compared & Ranked) | Respan](/content/articles/best-llm-gateways/index.html): The best LLM gateways put every model provider behind one endpoint. Compare 10 on model coverage, caching, compliance, and real pricing, with a clear pick... (3,524 words)
- [The Ultimate Guide to LLM Observability: Why OpenTelemetry is Essential and the Easiest Way to Set It Up (Haystack, Vercel AI SDK, LiteLLM) | Respan](/content/blog/ultimate-guide-llm-observability-opentelemetry/index.html): Learn how to set up OpenTelemetry for LLM observability across Haystack, Vercel AI SDK, and LiteLLM. Compare manual OTel setup vs automated tracing with... (5,497 words)
- [LLM Monitoring in Production: 7 Metrics, 5 Alerts, and What to Ignore (2026) | Respan](/content/articles/llm-monitoring/index.html): LLM monitoring guide for production. The 7 metrics that matter (latency, cost, hit rate, faithfulness, etc), 5 alerts worth setting up, and the dashboards we... (1,715 words)
- [9 Best LLM Observability Tools for Production AI Apps (2026) | Respan](/content/articles/best-llm-observability-tools/index.html): LLM observability tools differ most in what they can see inside an agent run. Compare 9 platforms on tracing depth, instrumentation, and what each one costs. (2,433 words)
- [10 Best Application Performance Monitoring Tools & Software (2026) | Respan](/content/articles/application-performance-monitoring-tools/index.html): Application performance monitoring tools differ most on cost and on what they can't see. Compare 10 platforms on pricing, instrumentation, and AI coverage. (4,856 words)
- [15 Best AI Governance Tools & Platforms in 2026 | Respan](/content/articles/ai-governance-tools/index.html): AI governance tools fall into three categories, and most teams need more than one. Compare 15 platforms on what they enforce, record, and detect. (4,624 words)
- [OpenAI API Trial Credits: How to Get + Stretch Them (2026) | Respan](/content/articles/openai-api-credits/index.html): OpenAI gives new accounts free trial credits, then it's pay-as-you-go. Here's how the credits work, the prepaid vs auto-recharge tradeoff, and the two... (2,015 words)
- [CLI | Respan Docs](/content/docs/documentation/cli/index.html): Manage your Respan observability from the command line. (856 words)
- [Top 10 Braintrust Alternatives for Production Evals (2026) | Respan](/content/articles/braintrust-alternatives/index.html): Braintrust alternatives worth evaluating in 2026, compared on production evals, tracing depth, and pricing. See how 10 platforms score live traffic. (958 words)
- [AI Gateway quickstart | Respan Docs](/content/docs/documentation/features/gateway/gateway-quickstart/index.html): Route your app through Respan's AI gateway. Call 1000+ LLMs through one unified API with automatic tracing, prompts, fallbacks, and caching. (639 words)
- [MCP | Respan Docs](/content/docs/documentation/mcp/index.html): Access your Respan data and documentation from your AI coding tools. (837 words)
- [Limits | Respan Docs](/content/docs/documentation/features/gateway/limits/index.html): Control spend and usage with per-API-key caps, organization spend caps, and per-customer budgets. (703 words)
- [Routing & passthrough | Respan Docs](/content/docs/documentation/features/gateway/routing-and-passthrough/index.html): Two ways to call Respan: a unified router or a provider-native passthrough. (703 words)
- [Retries and fallback order | Respan Docs](/content/docs/documentation/features/gateway/retries/index.html): Understand which route is attempted, when a request retries, and when the gateway advances to a fallback model. (516 words)
- [Overview | Respan Docs](/content/docs/documentation/overview/index.html): Respan is the full-stack AI engineering platform for LLM and agent products: an AI gateway to 1000+ models, tracing and monitoring, prompt management, evaluations, and agent security testing, all on one span-based data model. (439 words)
- [Responses API | Respan Docs](/content/docs/documentation/features/gateway/responses-api/index.html): Use the OpenAI-compatible Responses endpoint with OpenAI, Azure OpenAI, or Perplexity Agent API. (421 words)
- [33 Best OpenCode Alternatives & Competitors (2026) | Respan](/content/market-map/open-code/alternatives/index.html): OpenCode alternatives compared across 33 coding agents, including Claude Code, Cursor, Cline, and Kilo Code. See which fits terminal, IDE, or CLI workflows. (698 words)
- [Respan Agent | Respan Docs](/content/docs/documentation/agent/index.html): Investigate telemetry, work with prompts, configure monitoring, and run evaluations through Respan AI. (589 words)
- [Providers & models | Respan Docs](/content/docs/documentation/features/gateway/custom-models/index.html): Choose models per request, override credentials, and create custom model aliases. (514 words)
- [Chat completions passthrough | Respan Docs](/content/docs/documentation/features/gateway/chat-completions-passthrough/index.html): Relay a provider's own chat-completions payload and response through Respan, untranslated. (463 words)
- [Respan params & metadata | Respan Docs](/content/docs/documentation/features/gateway/respan-params/index.html): Tag every gateway request with customer, metadata, and observability fields. (345 words)
- [Langfuse vs Lunary (2026) | Respan](/content/market-map/compare/langfuse-vs-lunary/index.html): Langfuse vs Lunary: features, pricing, pros, cons, and which to pick for observability, prompts & evals. Updated 2026. (409 words)
- [Athina AI vs Datadog LLM (2026) | Respan](/content/market-map/compare/athina-ai-vs-datadog-llm/index.html): Athina AI vs Datadog LLM: features, pricing, pros, cons, and which to pick for observability, prompts & evals. Updated 2026. (422 words)
- [Pricing | Respan](/content/pricing/index.html): Observability and evals for building AI agents at scale. Start free with generous limits, upgrade when you need dedicated support. (389 words)
- [Fireworks AI vs Together AI (2026) | Respan](/content/market-map/compare/fireworks-ai-vs-together-ai/index.html): Fireworks AI vs Together AI: features, pricing, pros, cons, and which to pick for inference & compute. Updated 2026. (464 words)
- [Anthropic API vs AWS Bedrock Claude (2026): Which to Use | Respan](/content/articles/claude-vs-bedrock-claude/index.html): Anthropic API vs AWS Bedrock Claude compared: model freshness, pricing, IAM/VPC, BAA, latency, and a multi-cloud failover pattern through an LLM gateway. (1,720 words)
- [Athina AI vs Lunary (2026) | Respan](/content/market-map/compare/athina-ai-vs-lunary/index.html): Athina AI vs Lunary: features, pricing, pros, cons, and which to pick for observability, prompts & evals. Updated 2026. (294 words)
- [10 Best Langfuse Alternatives Compared & Ranked (2026) | Respan](/content/articles/langfuse-alternatives/index.html): Langfuse alternatives are worth a look now that ClickHouse owns it. Compare 10 platforms on pricing, self-hosting, tracing depth, and evaluation coverage. (1,335 words)
- [8 Best Prompt Management Tools in 2026 (Tested & Compared) | Respan](/content/articles/best-prompt-management-tools/index.html): The best prompt management platforms in 2026: Respan, PromptLayer, Vellum, LangSmith, Braintrust, Helicone, Promptfoo, Latitude. Pricing, features, and when... (1,267 words)
- [Kong AI Gateway: LLM Gateways](/content/market-map/kong-ai-gateway/index.html): Kong AI Gateway extends the popular Kong API gateway with AI-specific capabilities including multi-LLM routing, prompt engineering, semantic caching, rate… (523 words)
- [Athina AI: Observability, Prompts & Evals](/content/market-map/athina-ai/index.html): Athina AI is a monitoring and evaluation platform for production LLM applications. (472 words)
- [Kilo Code vs OpenCode (2026): VS Code Plugin or CLI Agent? | Respan](/content/market-map/compare/kilo-code-vs-open-code/index.html): Kilo Code vs OpenCode compared on models, cost, and workflow. Kilo Code routes tasks to sub-agents; OpenCode runs in the terminal. (697 words)
- [PromptLayer vs Weights & Biases (2026) | Respan](/content/market-map/compare/promptlayer-vs-weights-and-biases/index.html): PromptLayer vs Weights & Biases: features, pricing, pros, cons, and which to pick for observability, prompts & evals. Updated 2026. (420 words)
- [Confident AI: Observability, Prompts & Evals](/content/market-map/confident-ai/index.html): Confident AI develops DeepEval, the most popular open-source LLM evaluation framework. DeepEval provides 14+ evaluation metrics including faithfulness… (527 words)
- [Kong AI Gateway vs Respan (2026) | Respan](/content/market-map/compare/kong-ai-gateway-vs-respan/index.html): Kong AI Gateway vs Respan: features, pricing, pros, cons, and which to pick for llm gateways. Updated 2026. (378 words)
- [CrewAI vs Hermes Agent (2026): Multi-Agent or One Strong Agent? | Respan](/content/market-map/compare/crewai-vs-hermes-agent/index.html): CrewAI is multi-agent with roles and tasks. Hermes Agent is lighter and tool-call focused. When each pattern actually pays off in production. (346 words)
- [Athina AI vs Helicone (2026) | Respan](/content/market-map/compare/athina-ai-vs-helicone-observability/index.html): Athina AI vs Helicone: features, pricing, pros, cons, and which to pick for observability, prompts & evals. Updated 2026. (380 words)
- [Athina AI vs Galileo AI (2026) | Respan](/content/market-map/compare/athina-ai-vs-galileo-ai/index.html): Athina AI vs Galileo AI: features, pricing, pros, cons, and which to pick for observability, prompts & evals. Updated 2026. (389 words)
- [Botpress vs Flowise (2026) | Respan](/content/market-map/compare/botpress-vs-flowise/index.html): Botpress vs Flowise: features, pricing, pros, cons, and which to pick for no-code ai builders. Updated 2026. (382 words)
- [Future AGI vs Sentrial (2026) | Respan](/content/market-map/compare/future-agi-vs-sentrial/index.html): Future AGI vs Sentrial: features, pricing, pros, cons, and which to pick for observability, prompts & evals. Updated 2026. (431 words)
- [Exa vs Parallel AI (2026): Which Web Search API for RAG? | Respan](/content/market-map/compare/exa-vs-parallel-ai/index.html): Exa vs Parallel AI compared on search quality, extraction, and pricing. Both are AI-native web search APIs built for agents and RAG pipelines. (327 words)
- [HoneyHive vs Langfuse (2026) | Respan](/content/market-map/compare/honeyhive-vs-langfuse/index.html): HoneyHive vs Langfuse: features, pricing, pros, cons, and which to pick for observability, prompts & evals. Updated 2026. (439 words)
- [Devin vs Google Antigravity (2026) | Respan](/content/market-map/compare/devin-vs-google-antigravity/index.html): Devin vs Google Antigravity: features, pricing, pros, cons, and which to pick for coding agents. Updated 2026. (510 words)
- [CrewAI vs Pydantic AI (2026) | Respan](/content/market-map/compare/crewai-vs-pydantic-ai/index.html): CrewAI vs Pydantic AI: features, pricing, pros, cons, and which to pick for agent frameworks. Updated 2026. (494 words)
- [Careers | Respan](/content/careers/index.html): Join the team building the LLM engineering platform for the next generation of AI applications. We're hiring engineers, researchers, and builders who care deeply about developer tools. (243 words)
- [Athina AI vs Langfuse (2026) | Respan](/content/market-map/compare/athina-ai-vs-langfuse/index.html): Athina AI vs Langfuse: features, pricing, pros, cons, and which to pick for observability, prompts & evals. Updated 2026. (429 words)
- [Athina AI vs Portkey (2026) | Respan](/content/market-map/compare/athina-ai-vs-portkey-observability/index.html): Athina AI vs Portkey: features, pricing, pros, cons, and which to pick for observability, prompts & evals. Updated 2026. (274 words)
- [Provider: Groq | Respan Docs](/content/docs/integrations/gateway/model-providers/groq/index.html): Call Groq models through Respan Gateway with unified logs, cost, and latency. (287 words)
- [Frequently Asked Questions | Respan](/content/faq/index.html): Answers to common questions about Respan: the platform, security and compliance, pricing, the LLM gateway, observability, evals, and getting started. (339 words)

## Resources

- [Full Page Index](/index.html): Browse all cached pages with rich metadata
- [About This Cache](/about.html): Methodology, technical details, and usage guidelines
- [XML Sitemap](/sitemap.xml): Machine-readable sitemap for crawler discovery
- [Robots.txt](/robots.txt): Crawler directives
- [AgentSite Network](https://agentsite.network/network.html): Public index of AgentSites and their machine-readable resources