Neptune.aivs
Weights & Biases
Weights & Biases: Also experiment tracking with superior UI/UX and real-time collaboration features, though with higher per-user pricing.
Neptune.ai has been discontinued. This page is kept for the record, and for the alternatives below.
See what replaced itNeptune.ai
Metadata store for MLOps
As of 30 August 2026, Neptune.ai has a free plan and paid plans start at $49/month. Neptune. Softwr lists it under Machine Learning. Neptune.ai is made by Neptune Labs, launched in 2017, available on Web, Self-hosted.
Overview
What Neptune.ai does
Neptune.ai is a metadata store for MLOps that helps teams track, organize, and compare experiments. It provides flexible logging, powerful querying, and integrations with popular ML frameworks for experiment management and model versioning.
What people use it for
- Machine learning
- Data analysis
- Model training
- Predictive analytics
Related searches
The honest half
Where it falls short
Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Neptune.ai.
- Free tier limited to 100 hours per month, exhausted quickly with serious ML work
- Lacks hyperparameter sweeps compared to Weights and Biases
- No pipeline orchestration or broader MLOps lifecycle management
- Dashboard visualization limitations - automatic resizing affects visualization order and size
- Cloud-based SaaS only (as of last available service) requires internet connectivity
Cross-shopped
What people choose instead of Neptune.ai
Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.
- Neptune.aivsMLflow
MLflow: Open-source MLOps platform with comprehensive lifecycle management and flexible self-hosted deployment, free option.
- Neptune.aivsComet ML
Comet ML: Experiment tracking platform with better model registration and production monitoring capabilities than Neptune.
Capabilities
Features
Experiment tracking
Model registry
Metadata logging
Comparison views
Custom dashboards
PyTorch
Integration with PyTorch
TensorFlow
Integration with TensorFlow
Keras
Integration with Keras
scikit-learn
Integration with scikit-learn
XGBoost
Integration with XGBoost
Web support
Available on web
Linux support
Available on linux
Answered, with sources
Questions people ask
Each answer names the page it came from, so you can check it rather than take our word for it.
Does Neptune.ai support self-hosting?
Yes. Neptune can be self-hosted on a Kubernetes cluster with ClickHouse, MySQL, and Redis dependencies, allowing organizations to maintain full data control.
SourceWhat machine learning frameworks does Neptune integrate with?
Neptune integrates with PyTorch, TensorFlow, Keras, scikit-learn, XGBoost, LightGBM, Hugging Face Transformers, and Optuna for hyperparameter optimization.
SourceWhat is the cost for a team of 10 data scientists?
Neptune's Team plan costs $49 per user per month, resulting in $490/month for 10 users, comparable to Weights and Biases at $50/user.
SourceWhen is Neptune.ai shutting down?
Neptune.ai is shutting down its external SaaS service on March 5, 2026, following its acquisition by OpenAI in December 2025. Customers must export and migrate data before that date.
SourceBehind it
Who makes Neptune.ai
- Company
- Neptune Labs
- Based in
- Warsaw, Poland
- Founders
- Jakub Czakon, Piotr Niedźwiedź
Timeline
Neptune.ai over time
Keep looking
Where to go from Neptune.ai
- Neptune.ai alternativesEvery product people weigh against it
- Neptune.ai pricingPlans, floors and what the tiers exclude
- Neptune.ai badgesWhich rules it meets, and the figure behind each
- All Machine Learning softwareThe full category
- Best Machine Learning softwareThe shortlist, and how it was cut
Best Machine Learning software for
Compare Neptune.ai with
- Weights & Biases
- Comet ML
- MLflow
- Domino Data Lab
- ClearML
- Dataiku
- AWS SageMaker
- Google Vertex AI
- Azure Machine Learning
- DataRobot
- DVC
- Kubeflow
- H2O.ai
- Hugging Face
- Langwatch
- LlamaIndex
- Milvus
- Kubeflow
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Free, then $0.04/hour9 researched notesMicrosoft's managed platform for training, tracking and deploying models on Azure
Free plan13 researched notesGit-style versioning for data sets and models, with the files kept in object storage
Free plan14 researched notesLLM engineering platform for testing and evaluating AI agents in production
Free, then €29/mo10 researched notes
Softwr does not host reviews and shows no star rating for Neptune.ai, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.
More on Neptune.ai
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What people switch to, and what they give up
Neptune.ai pricing
Every tier, and where the cost actually lands
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