Preferred Networks

PLaMo API

The PLaMo API is Preferred Networks' cloud service for its domestically developed PLaMo large language models. Its interface is compatible with the OpenAI API, so existing OpenAI/LangChain client code works by pointing the base URL at https://api.platform.preferredai.jp/v1 and supplying a PLaMo API key as a bearer token. The published surface is three endpoints — Chat Completions (streaming SSE, function calling, JSON-Schema structured outputs and reasoning controls), Tokenize, and Models (index + retrieve) — served against the plamo-3.0-prime family.

GitHub

Documentation

📖
Documentation
https://docs.plamo.preferredai.jp/en/
📖
APIReference
https://docs.plamo.preferredai.jp/en/api
📖
GettingStarted
https://docs.plamo.preferredai.jp/en/getting-started

Other Resources

🔗
Console
https://console.platform.preferredai.jp/
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/preferred-networks/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
name: PLaMo API
description: The PLaMo API is Preferred Networks' cloud service for its domestically developed PLaMo large
  language models. Its interface is compatible with the OpenAI API, so existing OpenAI/LangChain client
  code works by pointing the base URL at https://api.platform.preferredai.jp/v1 and supplying a PLaMo
  API key as a bearer token. The published surface is three endpoints — Chat Completions (streaming SSE,
  function calling, JSON-Schema structured outputs and reasoning controls), Tokenize, and Models (index
  + retrieve) — served against the plamo-3.0-prime family.
image: https://www.preferred.jp/images/ogp.png
humanURL: https://docs.plamo.preferredai.jp/en/
baseURL: https://api.platform.preferredai.jp/v1
tags:
- Large Language Models
- Generative AI
- Chat Completions
- OpenAI-Compatible
- Tokenization
- Japan
tags_raw:
- Large Language Models
- Generative AI
- Chat Completions
- OpenAI Compatible
- Tokenization
- Japan
properties:
- type: Documentation
  url: https://docs.plamo.preferredai.jp/en/
- type: APIReference
  url: https://docs.plamo.preferredai.jp/en/api
- type: GettingStarted
  url: https://docs.plamo.preferredai.jp/en/getting-started
- type: Console
  url: https://console.platform.preferredai.jp/