L

Lemma

Production monitoring for AI agents: records each agent run as a trace, audits traces against the agent's instructions, groups recurring failures into issues, alerts in Slack, hands context to coding agents over MCP and turns fixed issues into online evals.

StageUndisclosed

Founded2025

HeadquartersSan Francisco, USA

StatusPrivate

Product

Selected offerings — the AI products recorded here, not the vendor's full catalogue.

• Lemma Developer tool

  Observability and evaluation for production AI agents: traces from the customer's agent are audited against its instructions, recurring failures are grouped into issues with root-cause context, alerted in Slack and Linear, fixable from a coding agent through the Lemma MCP server, and each fix creates an online eval to catch regressions; demo-led, no published pricing.

Similar products 63

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.

How this list is ranked ↗

PPromptLayerEarly-stageLemma and PromptLayer Observability both serve buyers who need to test and evaluate an AI agent and watch an AI agent for suspicious or runaway behaviour; scale not recorded for either.1 of 1 capabilityShared product typeCompareHHoneyHiveEarly-stageLemma and HoneyHive both serve buyers who need to test and evaluate an AI agent and watch an AI agent for suspicious or runaway behaviour; scale not recorded for either.1 of 1 capabilityShared product typeCompareLLunaryUndisclosedLemma and Lunary both serve buyers who need to test and evaluate an AI agent and watch an AI agent for suspicious or runaway behaviour; scale not recorded for either.1 of 1 capabilityShared product typeCompareLLaminarEarly-stageLemma and Laminar Signals both serve buyers who need to test and evaluate an AI agent and watch an AI agent for suspicious or runaway behaviour; scale not recorded for either.1 of 1 capabilityShared product typeCompareAAArthur AIEarly-stageLemma and Arthur Engine both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; scale not recorded for either.1 of 1 capabilityShared product typeComparePParloaLate-stageLemma and Parloa Performance Lab both serve buyers who need to test and evaluate an AI agent; Lemma's scale not recorded; ships AI agent, agent platform and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareHHarnessLate-stageLemma and AI Evals both serve buyers who need to test and evaluate an AI agent; scale not recorded for either.1 of 1 capabilityShared product typeCompareCMComet MLEarly-stageOverlaps on evaluation and observability; scale not recorded for either.1 of 1 capabilityShared product typeCompareMMicro1UndisclosedLemma and Cortex both serve buyers who need to test and evaluate an AI agent and watch an AI agent for suspicious or runaway behaviour; scale not recorded for either; ships data service rather than the same layer.1 of 1 capabilityDifferent layerCompareDDecagonLate-stageLemma and Experiments both serve buyers who need to test and evaluate an AI agent; Lemma's scale not recorded; ships AI agent, agent platform and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareAAArize AIUndisclosedLemma and Arize Phoenix both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; scale not recorded for either.1 of 1 capabilityShared product typeComparePPalantirPublicLemma and AIP Evals both serve buyers who need to test and evaluate an AI agent; Lemma's scale not recorded.1 of 1 capabilityShared product typeCompareCCognigyAcquiredOverlaps on evaluation and observability; Lemma's scale not recorded; Cognigy is acquired, with no independent scale.1 of 1 capabilityShared product typeCompareHAHippocratic AILate-stageLemma and AI Call Supervisor both serve buyers who need to test and evaluate an AI agent and watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; ships AI agent, agent platform and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareRRilletLate-stageLemma and Command Center both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; ships AI agent and application rather than the same layer.1 of 1 capabilityDifferent layerCompareLLiteLLMEarly-stageLemma and LiteLLM Lens both serve buyers who need to test and evaluate an AI agent and watch an AI agent for suspicious or runaway behaviour; scale not recorded for either; ships AI agent, application and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareDDeepchecksAbsorbedOverlaps on evaluation and observability; Lemma's scale not recorded; Deepchecks is absorbed, with no independent scale.1 of 1 capabilityShared product typeCompareEeGainPublicLemma and eGain Smart Evaluator both serve buyers who need to test and evaluate an AI agent; scale not recorded for either; ships AI agent, agent platform and 2 more rather than the same layer.1 of 1 capabilityDifferent layerCompareCCoreWeavePublicLemma and CoreWeave Agent Lens both serve buyers who need to test and evaluate an AI agent and watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded.1 of 1 capabilityShared product typeComparePPolyAIUndisclosedLemma and Wren both serve buyers who need to test and evaluate an AI agent; scale not recorded for either; ships AI agent and agent platform rather than the same layer.1 of 1 capabilityDifferent layerCompareRARetell AIUndisclosedLemma and Retell AI Conductor both serve buyers who need to test and evaluate an AI agent; scale not recorded for either; ships agent platform rather than the same layer.1 of 1 capabilityDifferent layerCompareMMercorLate-stageLemma and Mercor Enterprise Evals both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; ships data service rather than the same layer.1 of 1 capabilityDifferent layerCompareMMicrosoftPublicLemma and Observability in Foundry Control Plane both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded.1 of 1 capabilityShared product typeCompareLLangWatchUndisclosedLemma and LangWatch Instant Evals both serve buyers who need to test and evaluate an AI agent; scale not recorded for either.1 of 1 capabilityShared product typeCompareLLivePersonAcquiredLemma and LivePerson Syntrix both serve buyers who need to test and evaluate an AI agent; Lemma's scale not recorded; LivePerson is acquired, with no independent scale.1 of 1 capabilityShared product typeCompareMMastraEarly-stageLemma and Mastra Studio both serve buyers who need to test and evaluate an AI agent; scale not recorded for either.1 of 1 capabilityShared product typeCompareDDXUndisclosedLemma and AI Code Insights both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; scale not recorded for either.1 of 1 capabilityShared product typeCompareFForethoughtAcquiredLemma and Forethought QA Agent both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; Forethought is acquired, with no independent scale; ships AI agent, agent platform and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareSSierraLate-stageLemma and Insights both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded.1 of 1 capabilityShared product typeCompareHHaptikAcquiredLemma and Haptik Agent Analytics both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; Haptik is acquired, with no independent scale; ships AI agent, agent platform and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareBByteDanceUndisclosedLemma and Coze Loop both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; ByteDance's scale not comparable: only a revenue estimate, no market cap or valuation.1 of 1 capabilityShared product typeCompareWWorkdayPublicLemma and Agent Analytics both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded.1 of 1 capabilityShared product typeCompareYYellow.aiUndisclosedOverlaps on evaluation and observability; scale not recorded for either.1 of 1 capabilityShared product typeCompareVSVerint SystemsAcquiredLemma and Verint Quality Bot both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; Verint Systems is acquired, with no independent scale; ships agent platform, application and 2 more rather than the same layer.1 of 1 capabilityDifferent layerCompareFFinAcquiredLemma and Fin Operator both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; Fin is acquired, with no independent scale; ships AI agent, API service and 2 more rather than the same layer.1 of 1 capabilityDifferent layerCompareKKore.aiLate-stageLemma and Arch AI both serve buyers who need to test and evaluate an AI agent; scale not recorded for either; ships agent platform and application rather than the same layer.1 of 1 capabilityDifferent layerCompareCClayLate-stageLemma and Claygent Builder both serve buyers who need to test and evaluate an AI agent; Lemma's scale not recorded; ships AI agent, agent platform and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareCCrescendoEarly-stageLemma and Optimization Agent both serve buyers who need to test and evaluate an AI agent; Lemma's scale not recorded; ships AI agent, agent platform and 1 more rather than the same layer.1 of 1 capabilityDifferent layerComparePPhenomLate-stageLemma and Phenom AppTrail both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; scale not recorded for either; ships AI agent, application and 2 more rather than the same layer.1 of 1 capabilityDifferent layerCompareGGalileoAcquiredLemma and Galileo both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; Galileo is acquired, with no independent scale; ships API service and platform rather than the same layer.1 of 1 capabilityDifferent layerCompareLLangfuseAcquiredLemma and Langfuse both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; Langfuse is acquired, with no independent scale; ships application and platform rather than the same layer.1 of 1 capabilityDifferent layerComparePPointFiveEarly-stageLemma and TokenShift both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; scale not recorded for either; ships AI agent and platform rather than the same layer.1 of 1 capabilityDifferent layerCompareRRunwayLate-stageLemma and Runway Offline Policy Evaluation both serve buyers who need to test and evaluate an AI agent; Lemma's scale not recorded.1 of 1 capabilityShared product typeCompareW&Weights & BiasesAcquiredLemma and W&B Weave both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; Weights & Biases is acquired, with no independent scale.1 of 1 capabilityShared product typeCompareJJFrogPublicLemma and JFrog Agent Guard both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; scale not recorded for either.1 of 1 capabilityShared product typeCompareNNiCEPublicLemma and NiCE Quality Management both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; ships AI agent, agent platform and 3 more rather than the same layer.1 of 1 capabilityDifferent layerCompareBBraintrustLate-stageLemma and Patterns both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; ships AI agent, application and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareOOpenRouterLate-stageLemma and Ori Eval both serve buyers who need to test and evaluate an AI agent; Lemma's scale not recorded.1 of 1 capabilityShared product typeCompareRARelevance AIEarly-stageLemma and Invent both serve buyers who need to test and evaluate an AI agent; scale not recorded for either; ships AI agent, agent platform and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareAHAll Hands AIEarly-stageLemma and Agent Control Plane both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; scale not recorded for either.1 of 1 capabilityShared product typeCompareAAlibabaPublicLemma and AgentLoop both serve buyers who need to test and evaluate an AI agent and watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded.1 of 1 capabilityShared product typeCompareMAMaxim AIUndisclosedLemma and Maxim both serve buyers who need to test and evaluate an AI agent; scale not recorded for either; ships application, infrastructure service and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareDDataikuLate-stageLemma and Dataiku Agent Hub both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; ships AI agent, agent platform and 3 more rather than the same layer.1 of 1 capabilityDifferent layerCompareVVectaraEarly-stageLemma and Vectara Guardian Agents both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; scale not recorded for either; ships AI agent, agent platform and 2 more rather than the same layer.1 of 1 capabilityDifferent layerCompareZZscalerPublicOverlaps on evaluation and observability; Lemma's scale not recorded.1 of 1 capabilityShared product typeCompareRRogoLate-stageLemma and Watchtower both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; scale not recorded for either; ships AI agent, application and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareLLangChainLate-stageLemma and LangSmith Chat both serve buyers who need to test and evaluate an AI agent; scale not recorded for either.1 of 1 capabilityShared product typeComparePAPalo Alto NetworksPublicLemma and Prisma AIRS AI Red Teaming both serve buyers who need to test and evaluate an AI agent; Lemma's scale not recorded; ships AI agent, API service and 3 more rather than the same layer.1 of 1 capabilityDifferent layerCompareITInvisible TechnologiesLate-stageLemma and Synapse both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; scale not recorded for either; ships agent platform, data service and 1 more rather than the same layer.1 of 1 capabilityDifferent layerCompareSSynthflowEarly-stageLemma and Aurora both serve buyers who need to test and evaluate an AI agent; scale not recorded for either; ships AI agent and agent platform rather than the same layer.Different layerCompareHHarveyLate-stageOverlaps on evaluation and observability; Lemma's scale not recorded; ships AI agent and application rather than the same layer.1 of 1 capabilityDifferent layerCompareHHeliconeAcquiredLemma and Helicone both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded; Helicone is acquired, with no independent scale; ships API service and platform rather than the same layer.1 of 1 capabilityDifferent layerCompareSSAPPublicLemma and SAP AI Agent Hub both serve buyers who need to watch an AI agent for suspicious or runaway behaviour; Lemma's scale not recorded.1 of 1 capabilityShared product typeCompare

Closest 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

Total funding

Not found · 18 Oct 2026

Pages read for this record state no funding amount. Homepage testimonials congratulate the team on a round without an amount. Pages read: homepage, /blog and its posts, docs.uselemma.ai, the company's Y Combinator profile.

Valuation

Not found · 18 Oct 2026

Pages read for this record state no valuation.

Founded

Company disclosure · 18 Oct 2026

The company's own Y Combinator profile: "Founded: 2025".

Public listing

Not found · 18 Oct 2026

No listing on the pages read; treated as private.

Description

Official documentation · 18 Oct 2026

Homepage: "Production monitoring for AI agents. Surface silent failures, pull context across traces, improve your agent before users churn."

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