Zoo Labs Foundation

Zen Model Family

45+ open-source frontier models from 600M to 480B parameters. Open weights, community-trained, formally verified. Built on Qwen3+ architecture.

45+

Open Models

1T+

Max Parameters

59.2%

SWE-bench (Code)

82.7%

AIME24 Accuracy

Foundation

General purpose language models for text generation, reasoning, and instruction following.

HuggingFace

zen4-nano

0.6B params32K context

zen4-mini

1.5B params32K context

zen4-flash

4B params64K context

zen4-pro

32B params128K context

zen4-max

72B params128K context

zen4-ultra

480B params256K context

Code

Specialized for software engineering. 59.2% SWE-bench verified.

HuggingFace

zen4-coder-flash

4B params64K context

zen4-coder-pro

32B params128K context

Multimodal

Vision, audio, video, and 3D generation from a single architecture.

HuggingFace

zen-omni

72B params128K context

zen-vl

32B params128K context

zen-3d

8B params32K context

zen-director

14B params64K context

Safety

Content safety, alignment verification, and guardrails for production deployment.

HuggingFace

zen-guard

1B params8K context

zen-guard-pro

8B params32K context

zen-guard-vision

4B params16K context

Zoo Gym

Open-source AI training platform. 100+ model support, multi-GPU distributed training, 8 training methods. 2.5 years of community development.

Training-Free GRPO

99.8% cost reduction. $18 vs $10,000+ for traditional fine-tuning.

LoRA / QLoRA

Parameter-efficient fine-tuning for single-GPU training.

DPO

Direct preference optimization without reward model overhead.

Full Fine-Tuning

Multi-GPU distributed training with DeepSpeed ZeRO-3.

DSO Protocol

Decentralized semantic optimization via experience ledger.

RLHF

Reinforcement learning from human feedback for alignment.

Zoo AI Desktop

Run Zen models locally. Free, open-source, private by default. Supports all Zen model sizes that fit your hardware. Automatic model download from HuggingFace.

Local Inference

Run models on your GPU. No data leaves your machine.

Multi-Platform

macOS, Windows, Linux. Built with Tauri.

Mine $AI

Contribute GPU compute to Zoo Network and earn $AI tokens.

Download

API Access

Access Zen models via the Zoo API at api.zoo.network

# Chat completions

POST /v1/chat/completions

# Embeddings

POST /v1/embeddings

# Models list

GET /v1/models

View Documentation

Support Open AI Research

Every donation funds open-source models, research papers, and formally verified systems. 501(c)(3) tax-deductible.