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Neptune.ai vs MLflow

Side-by-side comparison of features, pricing, and ratings

Neptune.ai
Neptune.ai

ML experiment tracking and model registry now part of OpenAI's training infrastructure.

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MLflow
MLflow

Open source AI engineering platform for agents, LLMs & ML models

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Pricing
Freemium
Free
Plans
$0
$49/user/mo
Custom
$0
Included
Rating
—
—
Popularity
3.6k views
5.9k views
Skill Level
Advanced
Advanced
API Available
Platforms
WebAPICLI
WebAPICLI
Categories
📊 Data & Analytics
💻 Code & Development📊 Data & Analytics
Features
Experiment tracking
Model registry
Metadata management
Collaboration features
Custom dashboards
Query API
Model lineage tracking
Run comparison
Metric analysis across layers
Training monitoring
LLM and agent observability with OpenTelemetry tracing
Systematic evaluation with 50+ built-in metrics and LLM judges
Prompt versioning and optimization algorithms
AI Gateway for unified LLM provider routing and cost control
Agent Server for one-command FastAPI-based agent deployment
Experiment tracking and hyperparameter tuning
Model evaluation for ML and deep learning
Model Registry for versioning and lifecycle management
Model deployment tools
Full lineage tracking from prompts to traces
Cost monitoring and rate limiting
Request validation and streaming support
Integrations
PyTorch
TensorFlow
Keras
XGBoost
LightGBM
Optuna
scikit-learn
LangChain
OpenAI
OpenTelemetry
FastAPI