Neptune.ai

aid: neptune-ai
url: https://raw.githubusercontent.com/api-evangelist/neptune-ai/refs/heads/main/apis.yml
name: Neptune.ai
kind: company
description: Neptune.ai is an experiment tracker for ML and foundation-model training. As of 2025, Neptune.ai is being acquired
  by OpenAI and the public pricing page redirects to the OpenAI announcement. Customers continue to use the Neptune Python
  client and REST API during the transition.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- ML
- MLOps
- Experiment Tracking
- Foundation Models
- Acquired
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.19'
apis:
- aid: neptune-ai:neptune-rest-api
  name: Neptune.ai REST API
  humanURL: https://docs-legacy.neptune.ai/api/api_reference/
  baseURL: https://app.neptune.ai/api
  tags:
  - REST
  - Runs
  - Projects
  - Metrics
  description: The Neptune REST API backs the Neptune Python client. It exposes runs, projects, fields, and metadata logging.
    Authentication uses an API token from the user profile.
  properties:
  - type: Documentation
    url: https://docs-legacy.neptune.ai/api/api_reference/
  - type: SDKs
    title: Python (neptune)
    url: https://docs-legacy.neptune.ai/api/neptune/
- aid: neptune-ai:neptune-scale-api
  name: Neptune Scale API (foundation-model tier)
  humanURL: https://neptune.ai/docs
  baseURL: https://api.neptune.ai
  tags:
  - REST
  - Foundation Models
  - Scale
  description: Neptune Scale is the higher-throughput logging surface designed for foundation model training jobs. Same API-token
    authentication; SDK support in `neptune-scale`.
  properties:
  - type: Documentation
    url: https://neptune.ai/docs
common:
- type: LinkedIn
  url: https://www.linkedin.com/company/neptuneai
- type: Website
  url: https://neptune.ai/
- type: Acquisition
  url: https://openai.com/index/openai-to-acquire-neptune/
- type: SourceCode
  title: neptune client
  url: https://github.com/neptune-ai/neptune-client
- type: Plans
  url: plans/neptune-ai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/neptune-ai-rate-limits.yml
- type: FinOps
  url: finops/neptune-ai-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com