# Preferred Networks

**Canonical:** https://apis.io/providers/preferred-networks/  
**Website:** https://www.preferred.jp/en/  
**APIs profiled:** 1

Preferred Networks, Inc. (PFN) is a Tokyo-based AI company founded in March 2014 that vertically integrates the AI value chain from its own MN-Core AI processors and supercomputing infrastructure through to generative-AI foundation models, solutions and products. PFN develops PLaMo, a Japanese large language model built fully from scratch, and offers it commercially through the cloud-hosted PLaMo API — an OpenAI-compatible chat-completions, tokenize and models service at api.platform.preferredai.jp — alongside on-premises, Amazon Bedrock Marketplace, Snowflake and edge (PLaMo Lite) deployment options. PFN also maintains widely used open-source machine-learning software including Optuna, Chainer, PFRL, pytorch-pfn-extras and the PLaMo Translate CLI, which doubles as a locally hosted MCP server.

## Kin Score — 39.2 / 100 (thin)

Scored 2026-09-02 under rubric 0.18.0. Trend: flat (+0.0 from 39.2).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 6.7 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 57.9 |
| Developer Ergonomics | 54.8 |
| Commercial Clarity | 50.0 |
| Access Clarity | 50.0 |

## Agent readiness — 9.7 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | documented |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (1)

- **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 OpenA...

## MCP servers (1)

- **Preferred Networks MCP surface** — Preferred Networks ships one real MCP server, and it is not for the PLaMo API. The first-party plamo-translate CLI starts an MCP server as part of its `server` command, exposing...

## Security (3)

- **Preferred Networks Authentication** — 1 scheme
- **Preferred Networks Domain Security** — TLSv1.3 · HSTS · DMARC
- **Preferred Networks Trust Center** — ISO/IEC 27001

## Plans (1)

- **Preferred Networks Plans Pricing**

## Tags

Company, Artificial Intelligence, Machine-Learning, Large Language Models, Generative AI, LLM Inference, Foundation Models, Japan, Semiconductors, Supercomputing, Translation, MCP

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/preferred-networks/). Scores are computed from the provider's own public artifacts under a published rubric.