Build better AI agents with
Build better AI agents with
Build better AI agents with
Catch edge cases before users do.
Catch edge cases before users do.
Traces
Evaluations
Agent Simulation
Prompts
Datasets
Analytics
Annotations
Optimization
Traces
Evaluations
Agent Simulation
Prompts
Datasets
Analytics
Annotations
Optimization
Traces
Evaluations
Agent Simulation
Prompts
Datasets
Analytics
Annotations
Optimization
Trusted by AI innovators & global enterprises
Trusted by AI innovators & global enterprises
Trusted by AI innovators & global enterprises
300k+
300k+
300k+
Monthly installs
500k+
500k+
500k+
Daily evaluations to preventing hallucinations.
Saved on Quality
control per week
2.4k+
2.4k+
2.4k+
Github stars
Complete visibility into your production AI
Complete visibility into your production AI
1
Build
2
Evaluate
3
Deploy
4
Monitor
5
Optimize
Use Cases
Design smarter agents with evidence, not guesswork
Design smarter agents with evidence, not guesswork
LangWatch helps teams simulate AI agents, track responses, and catch failures before production. Built-in tools for data selection, evaluation, and testing let you move fast while staying in control. Reduce rework, manage regressions, and build trust in your AI.
LangWatch helps teams simulate AI agents, track responses, and catch failures before production. Built-in tools for data selection, evaluation, and testing let you move fast while staying in control. Reduce rework, manage regressions, and build trust in your AI.
python
Typescript
uv add langwatch
python
Typescript
uv add langwatch
python
Typescript
uv add langwatch
Framework Flexible
Works with any LLM app, agent framework, or model
Works with any LLM app, agent framework, or model
OpenTelemetry native, integrates with all LLMs & AI agent frameworks
Evaluations and Agent Simulations running on your existing testing infra
Fully open-source; run locally or self-host
No data lock-in, export any data you need and interop with the rest of your stack
Is LangWatch right for you?
Collaborate with your entire team
Collaborate with your entire team
LangWatch enables both non-technical & technical users to collaborate on running experiments,
evaluating datasets and managing prompts and flows.
LangWatch enables both non-technical & technical users to collaborate on running experiments,
evaluating datasets and managing prompts and flows.
AI Engineer
Access everything in just a few lines of code. Everything in LangWatch works with or without your code. Engineers are able to run prompts, flows, and evaluations programmatically, while non-technical users can use the UI.
Data Scientist
Product Manager
Domain Experts
AI Engineer
Access everything in just a few lines of code. Everything in LangWatch works with or without your code. Engineers are able to run prompts, flows, and evaluations programmatically, while non-technical users can use the UI.
Data Scientist
Product Manager
Domain Experts
AI Engineer
Data Scientist
Product Manager
Domain Experts
Empower non-technical team members to contribute to AI quality. Let them easily build evaluations and annotate model outputs, bringing them into the quality testing loop.
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
David Nicol
CTO - Productive Healthy Work Lives
“LangWatch didn’t just help us optimize our AI, it fundamentally changed how we work. Now, everyone on our team, from engineers to coaching experts, can contribute to building a better AI coach."
David Nicol
Amit Huli
Head of AI - Roojoom
“When I saw LangWatch for the first time, it reminded me of how we used to evaluate models in classic machine learning. I knew this was exactly what we needed to maintain our high standards at enterprise scale"
Amit Huli
Lane Cunmmingham
VP engineering - GetGenetica - Flora AI
“LangWatch has brought us our monitoring and evaluations with an intuitive analytics dashboard. The Optimization Studio with DSPy brings the kind of progress we were hoping for as a partner."
Lane Cunmmingham
Kjeld O
AI Architect, Entropical AI agency
"I’ve seen a lot of LLMops tools and LangWatch is solving a problem that everyone building with AI will have when going to production. The best part is their product is so easy to use."
Kjeld O
Enterprise-grade controls:
Your data, your rules
Enterprise-grade controls:
Your data, your rules
On-prem, VPC, air-gapped or hybrid
GDPR
Compliance
Role-based
access controls
Use custom models
& integrate via API
FAQ
Frequently Asked Questions
Frequently Asked Questions
How does LangWatch work?
How does LangWatch work?
How does LangWatch work?
What is LLM observability?
What is LLM observability?
What is LLM observability?
What are LLM evaluations?
What are LLM evaluations?
What are LLM evaluations?
Is LangWatch self-hosted available?
Is LangWatch self-hosted available?
Is LangWatch self-hosted available?
How does LangWatch compare to Langfuse or LangSmith?
How does LangWatch compare to Langfuse or LangSmith?
How does LangWatch compare to Langfuse or LangSmith?
What models and frameworks does LangWatch support and how do I integrate?
What models and frameworks does LangWatch support and how do I integrate?
What models and frameworks does LangWatch support and how do I integrate?
Can I try LangWatch for free?
Can I try LangWatch for free?
Can I try LangWatch for free?
How does LangWatch handle security and compliance?
How does LangWatch handle security and compliance?
How does LangWatch handle security and compliance?
How can I contribute to the project?
How can I contribute to the project?
How can I contribute to the project?
Ship agents with confidence, not crossed fingers
Get up and running with LangWatch in as little as 5 minutes.
Ship agents with confidence, not crossed fingers
Get up and running with LangWatch in as little as 5 minutes.
Ship agents with confidence, not crossed fingers
Get up and running with LangWatch in as little as 5 minutes.
Platform
Integrations
Platform
Integrations
Platform
Integrations