Respan
Respan sells LLM routing, observability and evaluation software to developers and enterprise teams operating AI agents.
StageEarly-stage
Founded2023
HeadquartersAlameda, USA
Alameda, USAStatusPrivate
Products
Selected offerings — the AI products recorded here, not the vendor's full catalogue.
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Developer platform for production LLM apps and agents that routes requests to 1,000+ models through one API, traces every call, runs evaluators and monitors on live traffic, red-teams agents and manages prompts, on one plan ladder from a free tier.
Inside Respan
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Respan AI Gateway routes requests to model providers through a unified endpoint with fallbacks, caching, spending limits and integrated observability and evaluations.
Similar products 44
No sourced competitor yet: no filing, vendor document or measured-market report read so far names a rival for this company, so none is asserted. The companies below are the closest by what their products do.
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TrimioUndisclosedRespan AI Gateway and Trimio both serve buyers who need to build on a hosted model API and track and cut what we spend on AI models; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareTT
The Token CompanyUndisclosedRespan AI Gateway and The Token Company LLM input compression both serve buyers who need to build on a hosted model API and track and cut what we spend on AI models; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareL
LangWatchUndisclosedRespan AI Gateway and LangWatch AI Gateway both serve buyers who need to track and cut what we spend on AI models; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareAS
AI SpendOpsUndisclosedRespan and AI SpendOps both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareR
RequestyEarly-stageRespan AI Gateway and Requesty AI Gateway both serve buyers who need to build on a hosted model API; same layer and the same scale band (early-stage private).2 of 2 capabilitiesShared product typeSame scale bandCompareEA
Eden AIEarly-stageRespan AI Gateway and Eden AI both serve buyers who need to build on a hosted model API; same layer and the same scale band (early-stage private).1 of 2 capabilitiesShared product typeSame scale bandCompareL
LiteLLMEarly-stageRespan and AI Gateway (LiteLLM Proxy) both serve buyers who need to build on a hosted model API; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareL
LaminarEarly-stageRespan and Laminar both serve buyers who need to test and evaluate an AI agent; same layer and the same scale band (early-stage private).1 of 2 capabilitiesShared product typeSame scale bandCompareND
Not DiamondUndisclosedRespan AI Gateway and Not Diamond both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareT
TrueFoundryEarly-stageRespan AI Gateway and TrueFoundry AI Gateway both serve buyers who need to build on a hosted model API; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareH
HoneyHiveEarly-stageRespan and HoneyHive both serve buyers who need to test and evaluate an AI agent; ships developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerSame scale bandCompareL
LunaryUndisclosedRespan and Lunary both serve buyers who need to test and evaluate an AI agent; scale not recorded for either; ships developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareMA
Maxim AIUndisclosedRespan and Bifrost both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareFA
Fireworks AILate-stageRespan AI Gateway and Fireworks Nexus both serve buyers who need to build on a hosted model API and track and cut what we spend on AI models; Respan's scale not recorded.1 of 2 capabilitiesShared product typeCompareAA
Arize AIUndisclosedRespan and Signal both serve buyers who need to test and evaluate an AI agent; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareP
PromptLayerEarly-stageRespan and PromptLayer Observability both serve buyers who need to test and evaluate an AI agent; ships developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerSame scale bandCompareHF
Hugging FaceLate-stageRespan AI Gateway and Inference Providers both serve buyers who need to build on a hosted model API; Respan's scale not recorded.1 of 2 capabilitiesShared product typeCompareM
MastraEarly-stageRespan AI Gateway and Mastra Gateway both serve buyers who need to build on a hosted model API; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareB
BrowserbaseEarly-stageRespan AI Gateway and Browserbase Model Gateway both serve buyers who need to build on a hosted model API; Respan's scale not recorded.2 of 2 capabilitiesShared product typeCompareHA
Hume AIUndisclosedRespan AI Gateway and User Testing API both serve buyers who need to test and evaluate an AI agent; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareO
OpenRouterLate-stageRespan and Ori Eval both serve buyers who need to test and evaluate an AI agent; Respan's scale not recorded; ships AI agent, developer tool and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareCM
Comet MLEarly-stageRespan AI Gateway and Cost Intelligence both serve buyers who need to track and cut what we spend on AI models; scale not recorded for either; ships application, developer tool and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareH
HeliconeAcquiredRespan AI Gateway and Helicone AI Gateway both serve buyers who need to build on a hosted model API; Respan's scale not recorded; Helicone is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareD
DatabricksLate-stageRespan and Unity Gateway both serve buyers who need to build on a hosted model API; Respan's scale not recorded.2 of 2 capabilitiesShared product typeCompareC
Core42UndisclosedRespan AI Gateway and Core42 Compass both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareL
LangChainLate-stageRespan and LangSmith Chat both serve buyers who need to test and evaluate an AI agent; scale not recorded for either; ships agent platform, application and 2 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareM
ModularAcquiredRespan and Modular Cloud both serve buyers who need to build on a hosted model API; Respan's scale not recorded; Modular is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareKC
Kilo CodeAcquiredRespan AI Gateway and Kilo Gateway both serve buyers who need to build on a hosted model API and track and cut what we spend on AI models; Respan's scale not recorded; Kilo Code is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareA
AssemblyAILate-stageRespan AI Gateway and AssemblyAI LLM Gateway both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareR
RedisUndisclosedRespan AI Gateway and Redis LangCache both serve buyers who need to build on a hosted model API; scale not recorded for either.Shared product typeCompareHC
Huawei CloudUndisclosedRespan and MaaS both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareNG
Nebius GroupPublicRespan and Nebius Token Factory both serve buyers who need to build on a hosted model API; Respan's scale not recorded.2 of 2 capabilitiesShared product typeCompareL
LambdaLate-stageRespan and Lambda Inference both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareVE
Volcano EngineUndisclosedRespan and BytePlus ModelArk both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareNC
NAVER CloudUndisclosedRespan AI Gateway and Papago Translation both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareAL
AI21 LabsLate-stageRespan AI Gateway and AI21 Intelligent Gateway both serve buyers who need to build on a hosted model API and track and cut what we spend on AI models; Respan's scale not recorded.1 of 2 capabilitiesShared product typeCompareBA
Blackbox AIUndisclosedRespan AI Gateway and Blackbox Router both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareF
FalUndisclosedRespan and fal both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareD
DataikuLate-stageRespan and Dataiku LLM Mesh both serve buyers who need to build on a hosted model API; Respan's scale not recorded.2 of 2 capabilitiesShared product typeCompareS
SpendlineUndisclosedRespan AI Gateway and Spendline both serve buyers who need to track and cut what we spend on AI models; scale not recorded for either; ships platform rather than the same layer.Different layerCompareO
OpenCodeUndisclosedRespan AI Gateway and OpenCode Go both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareIA
Inworld AIUndisclosedRespan and Realtime Router both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareTA
TypeSafe AIEarly-stageRespan and Jev both serve buyers who need to build on a hosted model API; scale not recorded for either; ships model API rather than the same layer.1 of 2 capabilitiesDifferent layerCompareQ
QuoraEarly-stageRespan AI Gateway and Poe API both serve buyers who need to build on a hosted model API; Respan's scale not recorded.1 of 2 capabilitiesShared product typeCompare
TrimioUndisclosedRespan AI Gateway and Trimio both serve buyers who need to build on a hosted model API and track and cut what we spend on AI models; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareTTThe Token CompanyUndisclosedRespan AI Gateway and The Token Company LLM input compression both serve buyers who need to build on a hosted model API and track and cut what we spend on AI models; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareLLangWatchUndisclosedRespan AI Gateway and LangWatch AI Gateway both serve buyers who need to track and cut what we spend on AI models; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareASAI SpendOpsUndisclosedRespan and AI SpendOps both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareRRequestyEarly-stageRespan AI Gateway and Requesty AI Gateway both serve buyers who need to build on a hosted model API; same layer and the same scale band (early-stage private).2 of 2 capabilitiesShared product typeSame scale bandCompareEAEden AIEarly-stageRespan AI Gateway and Eden AI both serve buyers who need to build on a hosted model API; same layer and the same scale band (early-stage private).1 of 2 capabilitiesShared product typeSame scale bandCompareLLiteLLMEarly-stageRespan and AI Gateway (LiteLLM Proxy) both serve buyers who need to build on a hosted model API; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareLLaminarEarly-stageRespan and Laminar both serve buyers who need to test and evaluate an AI agent; same layer and the same scale band (early-stage private).1 of 2 capabilitiesShared product typeSame scale bandCompareNDNot DiamondUndisclosedRespan AI Gateway and Not Diamond both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareTTrueFoundryEarly-stageRespan AI Gateway and TrueFoundry AI Gateway both serve buyers who need to build on a hosted model API; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareHHoneyHiveEarly-stageRespan and HoneyHive both serve buyers who need to test and evaluate an AI agent; ships developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerSame scale bandCompareLLunaryUndisclosedRespan and Lunary both serve buyers who need to test and evaluate an AI agent; scale not recorded for either; ships developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareMAMaxim AIUndisclosedRespan and Bifrost both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareFAFireworks AILate-stageRespan AI Gateway and Fireworks Nexus both serve buyers who need to build on a hosted model API and track and cut what we spend on AI models; Respan's scale not recorded.1 of 2 capabilitiesShared product typeCompareAAArize AIUndisclosedRespan and Signal both serve buyers who need to test and evaluate an AI agent; scale not recorded for either.1 of 2 capabilitiesShared product typeComparePPromptLayerEarly-stageRespan and PromptLayer Observability both serve buyers who need to test and evaluate an AI agent; ships developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerSame scale bandCompareHFHugging FaceLate-stageRespan AI Gateway and Inference Providers both serve buyers who need to build on a hosted model API; Respan's scale not recorded.1 of 2 capabilitiesShared product typeCompareMMastraEarly-stageRespan AI Gateway and Mastra Gateway both serve buyers who need to build on a hosted model API; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareBBrowserbaseEarly-stageRespan AI Gateway and Browserbase Model Gateway both serve buyers who need to build on a hosted model API; Respan's scale not recorded.2 of 2 capabilitiesShared product typeCompareHAHume AIUndisclosedRespan AI Gateway and User Testing API both serve buyers who need to test and evaluate an AI agent; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareOOpenRouterLate-stageRespan and Ori Eval both serve buyers who need to test and evaluate an AI agent; Respan's scale not recorded; ships AI agent, developer tool and 1 more rather than the same layer.2 of 2 capabilitiesDifferent layerCompareCMComet MLEarly-stageRespan AI Gateway and Cost Intelligence both serve buyers who need to track and cut what we spend on AI models; scale not recorded for either; ships application, developer tool and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareHHeliconeAcquiredRespan AI Gateway and Helicone AI Gateway both serve buyers who need to build on a hosted model API; Respan's scale not recorded; Helicone is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareDDatabricksLate-stageRespan and Unity Gateway both serve buyers who need to build on a hosted model API; Respan's scale not recorded.2 of 2 capabilitiesShared product typeCompareCCore42UndisclosedRespan AI Gateway and Core42 Compass both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareLLangChainLate-stageRespan and LangSmith Chat both serve buyers who need to test and evaluate an AI agent; scale not recorded for either; ships agent platform, application and 2 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareMModularAcquiredRespan and Modular Cloud both serve buyers who need to build on a hosted model API; Respan's scale not recorded; Modular is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareKCKilo CodeAcquiredRespan AI Gateway and Kilo Gateway both serve buyers who need to build on a hosted model API and track and cut what we spend on AI models; Respan's scale not recorded; Kilo Code is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareAAssemblyAILate-stageRespan AI Gateway and AssemblyAI LLM Gateway both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareRRedisUndisclosedRespan AI Gateway and Redis LangCache both serve buyers who need to build on a hosted model API; scale not recorded for either.Shared product typeCompareHCHuawei CloudUndisclosedRespan and MaaS both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareNGNebius GroupPublicRespan and Nebius Token Factory both serve buyers who need to build on a hosted model API; Respan's scale not recorded.2 of 2 capabilitiesShared product typeCompareLLambdaLate-stageRespan and Lambda Inference both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareVEVolcano EngineUndisclosedRespan and BytePlus ModelArk both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareNCNAVER CloudUndisclosedRespan AI Gateway and Papago Translation both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareALAI21 LabsLate-stageRespan AI Gateway and AI21 Intelligent Gateway both serve buyers who need to build on a hosted model API and track and cut what we spend on AI models; Respan's scale not recorded.1 of 2 capabilitiesShared product typeCompareBABlackbox AIUndisclosedRespan AI Gateway and Blackbox Router both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareFFalUndisclosedRespan and fal both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareDDataikuLate-stageRespan and Dataiku LLM Mesh both serve buyers who need to build on a hosted model API; Respan's scale not recorded.2 of 2 capabilitiesShared product typeCompareSSpendlineUndisclosedRespan AI Gateway and Spendline both serve buyers who need to track and cut what we spend on AI models; scale not recorded for either; ships platform rather than the same layer.Different layerCompareOOpenCodeUndisclosedRespan AI Gateway and OpenCode Go both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareIAInworld AIUndisclosedRespan and Realtime Router both serve buyers who need to build on a hosted model API; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareTATypeSafe AIEarly-stageRespan and Jev both serve buyers who need to build on a hosted model API; scale not recorded for either; ships model API rather than the same layer.1 of 2 capabilitiesDifferent layerCompareQQuoraEarly-stageRespan AI Gateway and Poe API both serve buyers who need to build on a hosted model API; Respan's scale not recorded.1 of 2 capabilitiesShared product typeCompareClosest alternatives are pairs a vendor page itself compares. Similar products are matched from what each product does; nothing in that group is asserted as a rivalry.
Sources
- Stage, from total funding
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Company disclosure · 14 Oct 2026
"We've raised $5M to build proactive observability for AI agents."
- Valuation
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Pages read for this record state no valuation or market capitalisation.
- Founded
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Company disclosure · 14 Oct 2026
"Respan was founded in 2023"
- Public listing
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No listing on the pages read; treated as private.
- Description
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Official documentation · 14 Oct 2026
Company page: "trace, monitor, and red-team every agent run."
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