Best MLflow AI Monitoring Alternatives in 2026
15 llm monitoring our editors would look at instead of MLflow AI Monitoring, in our ranking order.
MLflow AI Monitoring: Open-source tracing and quality evaluation for teams running LLM apps on MLflow. Where it falls short: monitoring is part of the broader MLflow platform, not a separately priced product.
Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. Scores and reviews are set by our editors and never change for payment; paid placements are marked Featured. How we rank.
-
Best forTeams building and monitoring LLM applications and agents
Broad LLM tracing and evaluation, with cloud, hybrid, and self-hosted options.
- Evaluation support
- LLM tracing
7.7/10★★★★☆Visit LangSmith -
Best forTeams already using Datadog
LLM tracing and evaluation with Datadog context, plus a free plan and cloud-only deployment.
- Alerts
- Evaluation support
- LLM tracing
9.0/10★★★★☆Visit Datadog -
Best forTeams seeking open-source, full-stack observability
Trace LLMs, agents, retrieval, evaluations, prompts, and costs in cloud or self-hosted deployments.
- Evaluation support
- LLM tracing
7.7/10★★★★☆Visit Langfuse -
Best forTeams needing RAG diagnostics and agent evaluations
A broad monitoring toolkit with RAG diagnostics, agent evaluations, and a free tier.
- Evaluation support
- LLM tracing
7.7/10★★★★☆Visit Arize AX -
Best forTeams monitoring LLM apps and agent behavior
Trace LLM apps and agents, evaluate outputs, and monitor cost and safety signals.
- Evaluation support
- LLM tracing
8.7/10★★★★☆Visit W&B Weave -
Best forTeams prioritizing open-source tracing and evaluation
Trace and evaluate LLM applications in the cloud or on your own infrastructure.
- Evaluation support
- LLM tracing
7.7/10★★★★☆Visit Opik -
Best forTeams wanting free, self-hosted LLM observability
A free, self-hostable stack for tracing, evaluating, and iterating on LLM applications.
- Evaluation support
- LLM tracing
7.7/10★★★★☆Visit Arize Phoenix -
Best forTeams needing a model gateway with observability
A model gateway paired with tracing, prompt workflows, evaluations, and cost analytics.
- Evaluation support
- LLM tracing
8.7/10★★★★☆Visit Helicone -
Best forTeams focused on evaluation-led production quality
A quality-focused platform linking LLM evaluations, production traces, and regression gates.
5.0/10★★☆☆☆Visit Braintrust -
Best forTeams needing safety checks and CI/CD evaluation gates
Galileo pairs production tracing with safety evaluations, guardrails, and CI/CD gates.
5.0/10★★☆☆☆Visit Galileo -
Best forTeams needing drift alerts and CI/CD evaluation
Trace, evaluate, and monitor LLM applications and agents across development and production.
- Evaluation support
- LLM tracing
6.7/10★★★☆☆Visit HoneyHive -
Best forTeams needing simulation and OpenTelemetry-native traces
A broad monitoring toolkit for teams that need simulation and OpenTelemetry-native traces.
- Evaluation support
- LLM tracing
7.7/10★★★★☆Visit LangWatch -
Best forTeams prioritizing routing, fallbacks, and analytics
Routing, fallbacks, and request analytics are central to Portkey’s LLM gateway.
5.0/10★★☆☆☆Visit Portkey -
Best forTeams debugging agent runs with searchable traces
Searchable traces, failure signals, and evaluations for debugging agent runs.
- Evaluation support
- LLM tracing
7.7/10★★★★☆Visit Laminar -
Best forTeams wanting free tracing with vector database visibility
Free tracing spans LLMs, agents, sessions, and vector databases.
4.0/10★★☆☆☆Visit Traceloop
MLflow AI Monitoring Alternatives: Common Questions
What is the best alternative to MLflow AI Monitoring?
LangSmith: #1 in our Llm Monitoring ranking, with an editor score of 7.7 out of 10. Broad LLM tracing and evaluation, with cloud, hybrid, and self-hosted options.
Is there a free alternative to MLflow AI Monitoring?
Yes. LangSmith, Datadog LLM Observability, Langfuse, Arize AX and W&B Weave have a free plan or a free tier (15 of the 15 alternatives on this page).
What is the cheapest paid alternative to MLflow AI Monitoring?
Of the alternatives here that publish a price, Opik starts lowest, at $19/mo.
MLflow AI Monitoring vs Each Alternative
| # | Tool | Free plan | Paid from | LLM tracing | Evaluation support | Deployment options | Trace retention | Score |
|---|---|---|---|---|---|---|---|---|
| not scored | MLflow AI Monitoring | Yes | None | Yes | Yes | Self_hosted | — | — |
| 1 | LangSmith | Yes | — | Yes | Yes | Both | — | 7.7 |
| 2 | Datadog LLM Observability | Yes | $160/mo | Yes | Yes | Cloud | 15 days | 9.0 |
| 3 | Langfuse | Yes | $29/mo | Yes | Yes | Both | — | 7.7 |
| 4 | Arize AX | Yes | $50/mo | Yes | Yes | Both | — | 7.7 |
| 5 | W&B Weave | Yes | $60/mo | Yes | Yes | Both | — | 8.7 |
| 6 | Opik | Yes | $19/mo | Yes | Yes | Both | — | 7.7 |
| 7 | Arize Phoenix | Yes | None | Yes | Yes | Both | — | 7.7 |
| 8 | Helicone | Yes | $79/mo | Yes | Yes | Both | — | 8.7 |
| 9 | Braintrust | Yes | $249/mo | — | — | Both | — | 5.0 |
| 10 | Galileo | Yes | $100/mo | — | — | Both | — | 5.0 |
| 11 | HoneyHive | Yes | — | Yes | Yes | Both | — | 6.7 |
| 12 | LangWatch | Yes | — | Yes | Yes | Both | — | 7.7 |
| 13 | Portkey | Yes | $49/mo | — | — | — | — | 5.0 |
| 14 | Laminar | Yes | $30/mo | Yes | Yes | Both | — | 7.7 |
| 15 | Traceloop | Yes | — | — | — | — | — | 4.0 |
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026