Neptune AI
MLOps stack component for experiment tracking.
Acquired Neptune AI
Acquired · March 2026
Neptune.ai was a Warsaw-based MLOps platform for experiment tracking, founded in 2017. OpenAI announced it would acquire the company on December 3, 2025. The hosted SaaS was shut off on March 5, 2026, and remaining hosted data was deleted; the neptune.ai domain now redirects to OpenAI. The tooling continues internally at OpenAI.
Acquired by OpenAI.
Last known pricing: Free tier; paid team and enterprise plans
Is Neptune AI shut down?
Effectively, yes. Neptune AI was acquired by OpenAI in Mar 2026 and the standalone product was sunset. Its record is preserved in the ToolDirectory.AI graveyard, our hand-reviewed registry of AI tools that shut down or were acquired.
What to use instead
Grok
Elon Musk's xAI aims to understand the universe's true nature.
Paid - Inquire
4.92
482
fal.ai
Fastest generative AI platform for developers — 1,000+ image, video, audio, and 3D models with optimized real-time inference. Default home for FLUX, SAM, MuseTalk.
Freemium
4.93
490
Vercel AI SDK
Universal TypeScript SDK from Vercel for building AI apps and agents with multi-model support.
Free
4.93
480
Overview
Neptune.ai: The MLOps Solution for Efficient Experiment Tracking
Neptune.ai is a robust MLOps platform designed to streamline the tracking, comparison, and sharing of machine learning models. It serves as a central hub for ML professionals, offering a unified interface to monitor and manage experiments. With Neptune.ai, teams can skip the tedious process of debugging disorganized models and accelerate the transition to production-ready solutions. The platform's flexibility allows integration with over 25 ML tools and frameworks, making it a versatile choice for diverse ML workflows.
Key Features:
- Comprehensive experiment tracking and management
- Integration with 25+ ML tools and frameworks
- Scalable and deployable on various infrastructures
- Live training monitoring and advanced comparison tools
- Reproducibility and version control for models
Ideal Use Case:
For ML teams and professionals aiming for efficient experiment tracking, model versioning, and seamless collaboration.
Why use Neptune.ai:
- Centralized platform for all ML experiment needs
- Rapid prototyping with live training insights
- Seamless integration with popular ML tools
- Collaborative features for team-based projects
- Efficient model versioning and handover for production
tl;dr:
Neptune.ai offers a centralized MLOps platform for efficient experiment tracking, model versioning, and collaboration, integrated with popular ML tools.
FAQ
Q: What does Neptune AI do? A: MLOps stack component for experiment tracking.
Q: How is Neptune AI priced? A: Neptune AI is free to use. No credit card required.
Q: What problem does Neptune AI solve? A: Neptune AI helps ML engineers and platform teams build, deploy, and scale AI infrastructure and pipelines.
Q: What can replace Neptune AI? A: Top alternatives to Neptune AI include Grok, fal.ai, and Vercel AI SDK. Explore alternatives in the same category for more options.
Related
Looking for more options? Browse the AI Infrastructure directory or read our best AI infrastructure tools listicle. Neptune AI is also tracked on Crunchbase.
Why Use Neptune AI
