LangSmith vs Prometheus Comparison
LangSmith
Starting at Free free
- Small Business
- Mid-Market
LangSmith is the LLMOps observability and evaluation platform built by LangChain for teams developing production LLM applications. It provides tracing, debugging, and evaluation for any LLM application — not just LangCha…
Prometheus
Starting at Contact for pricing
- Large Enterprises
- Medium Business
Prometheus - A software application for data management and integration. Prometheus is a Web-based, multi-user solution for data import, cleaning, transformation and load. It includes a data warehouse, business intellige…
Prometheus leads on user satisfaction with a 4.6-star rating across 31 reviews.
LangSmith vs Prometheus — at a glance
| Feature | LangSmith | Prometheus |
|---|---|---|
| Rating | 4.5 / 5 | 4.6 / 5 |
| Reviews | 310 | 31 |
| Starting price | Free free | Contact for pricing |
| Free trial | No | No |
| Free version | No | No |
| Best for | Small Business, Mid-Market, Enterprise | Large Enterprises, Medium Business, Small Business |
| Category | MLOps Platforms | Database Management Software |
| Platforms | Cloud, On-Premise | SaaS/Web/Cloud, Installed - Windows, Installed - Mac |
| API | Available | — |
| Support modes | Discord Community, Help Center, Email Support, Enterprise Support | Online |
| Certifications | — | — |
| Data residency | — | Global |
Key differences between LangSmith and Prometheus
- Pricing: LangSmith starts at Free free. Prometheus pricing is not publicly listed.
- Target audience: LangSmith is built for Small Business and Mid-Market, while Prometheus targets Large Enterprises and Medium Business.
- User satisfaction: Prometheus scores higher with a 4.6-star average.
- Deployment: LangSmith supports Cloud, On-Premise; Prometheus supports SaaS/Web/Cloud, Installed - Windows, Installed - Mac.
LangSmith vs Prometheus — find the better fit before you commit.
Which tool fits your team best
Which is actually cheaper for your team size
Where each product wins, per real buyers
Most MLOps Platforms tools look identical on paper. This comparison cuts to the differences that matter — pricing structure, team fit, and what real buyers found after signing up.
Biggest differences
Features
Pricing
Buying details
Security
Buyer feedback
Integrations
Product tour
Other options
Talk to an expert Talk to an expert | Talk to an expert Talk to an expert |
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LangSmith vs Prometheus: Biggest differences
Start here before you go deeper into features.
Small Business, Mid-Market, Enterprise
Large Enterprises, Medium Business, Small Business
LangSmith typically suits Small Business and Mid-Market. Prometheus tends to fit Large Enterprises and Medium Business better. The right choice depends on your team size, workflow, and whether a free trial matters.
Description | LangSmith is the LLMOps observability and evaluation platform built by LangChain for teams developing production LLM applications. It provides tracing, debugging, and evaluation for any LLM ... Read More about LangSmith | Prometheus - A software application for data management and integration. Prometheus is a Web-based, multi-user solution for data import, cleaning, transformation and load. It includes a ... Read More about Prometheus |
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Entry Level Pricing |
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Free Trial Availability |
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SpotScoreWhat's this? ↗ | 9.0/10 | Not Available |
User RatingsBased on verified Spotsaas reviews | ||
Get pricing help | Get pricing help |
Where each option fits best
See where each product is strongest, which teams it fits, and what causes buyers to keep looking — before you commit.
Based on buyer reviews and verified product data collected by Spotsaas.
Key strengths
- Debug LLM Failures Fast: Full call traces with inputs, outputs, latency, and token counts for every LLM call — no more guessing why an AI chain failed.
- Prevent Prompt Regressions: Automated evaluation runs on datasets catch quality regressions when prompts change, before they reach users.
- Monitor Production AI Quality: Real-time dashboards track LLM latency, error rates, and output quality — the same visibility layer backend engineers expect for APIs.
No key benefits available yet.
Best fit
- AI engineering teams debugging complex multi-step LLM chains that produce unexpected outputs
- Teams running systematic evaluation of prompt changes before deploying to production
- ML platform teams building shared observability infrastructure for multiple AI product teams
No best-fit guidance available yet.
Software Demo
Demo |  Prometheus has not given any software demo yet If you're the owner of this profile, add your demo.Contact us |
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How do LangSmith and Prometheus Compare on Features?
Total Features | 9 Features | 3 Features |
|---|---|---|
Unique Features | No unique features | No unique features |
Get Quote | Get Quote |
Compare LangSmith and Prometheus on pricing
Review starting price, plan structure, and free-trial access side by side so you can see which option fits your budget and buying process.
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LangSmith vs Prometheus: Other Details
Organization Types supported |
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Platforms Supported |
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Modes of support |
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API Support |
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Get help choosing | Get help choosing |
LangSmith vs Prometheus Security & Compliance
Certifications, data handling, and security controls for IT and compliance evaluators.
HIPAA | — | ✗ No |
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Data Residency | — | 🌐 Global |
LangSmith User Reviews & Rating Comparison
User Ratings | 4.5 (based on 310 reviews) | |
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Rating Distribution | ||
Spotsaas Editor’s POV generated by AI | Buyer sentiment Buyer sentiment is very strong across 310 reviews, with consistently positive feedback. What buyers like
Common complaints
| Buyer sentiment Buyer sentiment is very strong across 31 reviews, with consistently positive feedback. What buyers like
Common complaints
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Pros and Cons |
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Positive Reviews | No reviews available for the product | No reviews available for the product |
LangSmith and Prometheus Customers
Customers | No Customers information available. |  Amadeus |
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Media and Screenshots
Screenshots | No screenshots available. |  4 Screenshots |
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Top Alternatives to LangSmith and Prometheus in 2026
Alternatives | No Alternative products available. |
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Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
Frequently asked questions
- Which is better, LangSmith or Prometheus?
- Prometheus edges out the other on user ratings (4.6 vs 4.5). That said, the best pick depends on your use case — use the comparison tables above to evaluate each dimension.
- Do LangSmith and Prometheus offer a free trial?
- Neither LangSmith nor Prometheus currently lists a free trial.
- What is the starting price of LangSmith vs Prometheus?
- LangSmith starts at Free free. Prometheus starts at Contact for pricing.
- What are the top alternatives to Prometheus?
- Top alternatives to Prometheus include Zabbix, Grafana, New Relic Alerts, DatabaseLog, Splunk Enterprise.