Traceloop
AcquiredYC W23Tel Aviv-Yafo, IL · Founded 2023 · 9 employees · 4 known investors
Traceloop provides debugging and monitoring tools for developers building machine learning systems and large language model applications. The platform helps teams observe and troubleshoot production systems, including real-time inference and model behavior.
Also known as Enrolla · Rovie · Vecinity · OpenLLMetry
Founders & leadership· Y Combinator alumni (W23)
Traceloop was founded in 2023 by Nir Gazit and Gal Kleinman.
Investors · 4
Funding
SEC filings, press & company announcements$6.1M disclosed across 1 round · 2025
- $6.1MSeedMay 2025 · 2 sourcesSource ↗
Source: company announcements and press reports — follow each round's link for the claim.
Company profile
researched Aug 2026Traceloop offers an observability and reliability platform for applications built on large language models. The product captures traces of prompts, responses, latency and related telemetry with a single line of instrumentation code, and turns raw LLM logs into structured quality signals. It is positioned to address two problems the company describes: ad-hoc, spreadsheet-based quality scoring that leaves results in doubt, and silent model drift where output quality degrades before teams detect it.
On top of tracing, Traceloop runs evaluations on production data. Built-in metrics such as faithfulness, relevance and safety are applied automatically without configuration, and teams can define custom quality criteria, annotate real examples and train a custom evaluator that scores outputs according to their own standards. Evaluations can be executed in continuous-integration workflows (for example, on every pull request) or in real time as the application runs, with thresholds used to gate releases. The company frames this as a continuous feedback loop between evaluations and monitoring.
Traceloop is built on OpenTelemetry and ships OpenLLMetry, its open-source SDK, published on GitHub. Instrumentation is available for Python, TypeScript, Go and Ruby, either through OpenLLMetry or through Hub, the company's native OpenTelemetry-based gateway. The platform supports more than 20 model providers (including OpenAI, Anthropic, Gemini, Bedrock and Ollama), vector databases such as Pinecone and Chroma, and orchestration frameworks including LangChain, LlamaIndex and CrewAI.
Business model
Traceloop sells a developer platform for LLM observability and evaluation, offered as a hosted service with a free entry tier and published pricing, alongside self-managed deployments. An open-source SDK, OpenLLMetry, serves as the instrumentation layer and adoption channel for the commercial platform.
Latest developments
Traceloop's website announces that the company is joining ServiceNow.
▸Full profile — market position, technology, go-to-market
Market position
Traceloop positions itself as an LLM reliability and observability platform serving both startup and enterprise customers across cloud and isolated environments.
The company emphasizes reliance on open standards (OpenTelemetry) and an open-source SDK to avoid vendor lock-in, minimal-setup instrumentation, automatic out-of-the-box quality metrics plus trainable custom evaluators, broad compatibility across model providers, vector databases and orchestration frameworks, and enterprise deployment options including cloud, on-premises and air-gapped, with SOC 2 and HIPAA compliance.
Technology
The platform is built on OpenTelemetry standards. OpenLLMetry, the company's open-source SDK, instruments LLM applications in Python, TypeScript, Go and Ruby; a gateway component called Hub provides a native OpenTelemetry-based ingestion path. Collected traces cover prompts, responses and latency, and are scored by built-in evaluators (faithfulness, relevance, safety) or by custom evaluators trained on user-annotated examples.
Go-to-market
Self-service onboarding via a free tier and a one-line instrumentation SDK, supported by demo requests for larger buyers, documentation, and an open-source GitHub project that drives developer adoption.
Engineering teams shipping LLM-based applications, ranging from startups to enterprises, including organizations with regulated or restricted infrastructure requirements that need on-premises or air-gapped deployments.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Founder mafia
2 people who came through Traceloop went on to found or lead other companies.
Competitors · 9
by search overlap
Companies competing with Traceloop for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline · 1
launches, deals, and filingsA banner on Traceloop's homepage states that the company is joining ServiceNow.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
▸Research sources · 1
primary sources listed
- Tracelooptraceloop.com · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Traceloop do?
- Traceloop is an LLM reliability platform for tracing, evaluating and monitoring large language model applications.
- Who founded Traceloop?
- Traceloop was founded by Nir Gazit, Gal Kleinman in 2023.
- Who are Traceloop's investors?
- Traceloop's investors include Ibex Investors, Y Combinator, Samsung Next, Grand Ventures.
- How much funding has Traceloop raised?
- Traceloop has disclosed $6.1M raised across 1 round.
- Where is Traceloop headquartered?
- Traceloop is headquartered in Tel Aviv-Yafo, IL.