Zerg Client

Zerg Client

Zerg AI
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About

Pi is a minimal terminal coding harness built to adapt to developer workflows instead of forcing developers to adapt to it. It ships with powerful defaults, but stays intentionally small and aggressively extensible, letting users customize Pi with extensions, skills, prompt templates, themes, and shareable packages from npm or git. If a team needs a command, tool, provider, workflow, or UI tweak, they can ask Pi to build it, manipulate it in place, reload, and keep going. Pi supports interactive, print/JSON, RPC, and SDK modes, making it usable as a full terminal UI, a scriptable command, a JSON event stream, or an embeddable agent harness. It works with 15+ providers and hundreds of models, including Anthropic, OpenAI, Google, Azure, Bedrock, Mistral, Groq, Cerebras, xAI, Hugging Face, Kimi For Coding, MiniMax, OpenRouter, Ollama, and more, with mid-session model switching.

About

Zerg Client (ZTC) is a beta AI coding agent for developers working in existing code projects. It reads and explores project code, plans changes, edits files, runs commands and tests, and checks results. Users can work in a terminal client or, on Apple Silicon Macs, the native desktop app; named sessions can be saved and resumed. Its screen layer lets the agent open and operate terminal panes (zmux) while users watch. ZTC connects to models through a ZergAI account or local provider API keys; available models depend on the sign-in route and provider access. The command-line client runs headlessly on macOS, Linux, and Windows. ZTC is source-available under the Zerg Source Available License and free to evaluate; other commercial use requires a separate license. Model usage is billed separately.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers and AI tool builders who want a minimal, extensible terminal coding agent they can customize, script, embed, and adapt to their own workflows

Audience

Software developers.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

Evaluation use is free under the Zerg Source Available License. Personal, educational, research, and nonprofit use is also permitted under its terms. Other commercial use requires a separate signed license. Model usage is billed separately through ZergAI or directly by the selected provider when users supply their own API keys.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

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Pros & Cons from Real Users

Pros

  • Pi Agent looks really appealing from a developer’s point of view because it is simple, open-source, and focused on the actual mechanics of building coding agents. It is not trying to be a giant all-in-one platform. It gives you the core pieces: a unified LLM API, an agent loop, a terminal UI, and a coding-agent CLI. I especially like the context-engineering approach. Being able to control project instructions with AGENTS.md, customize the system prompt with SYSTEM.md, and manage long sessions through compaction makes Pi feel built for developers who actually understand how fragile agent context can be. The open-source MIT license is a big plus too. If I am building serious agent workflows, I want to inspect the harness, modify it, swap models, and understand what is happening under the hood instead of being locked into a black-box coding assistant.

Cons

  • Pi Agent is probably not the best fit for someone who wants a polished, fully managed AI coding product out of the box. It feels more like a toolkit for developers who are comfortable configuring their own workflows, choosing models, and tuning the agent behavior. I would also want to test reliability carefully before using it on production repos. Coding agents can make impressive changes, but they can also get stuck, over-edit files, miss project conventions, or make subtle mistakes if the context and guardrails are not set up well. The simplicity is a strength, but it also means you may need to bring more of your own infrastructure, evals, permissions, and safety controls.

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Pi
United States
pi.dev/

Company Information

Zerg AI
Founded: 2021
United States
zergai.com/ztc

Alternatives

Amp

Amp

Amp Code

Alternatives

Claude Code

Claude Code

Anthropic
AgentVera

AgentVera

Solviera Teknoloji
Claude Duet

Claude Duet

Anthropic
Cline

Cline

Cline AI Coding Agent
VibeiDE

VibeiDE

Crowie s.r.o.

Categories

Categories

AI Coding Agents Supported

Integrations

Anthropic Supported
OpenAI Supported
Claude Fable 5 Supported
Claude Fable 5.5 Supported
Claude Haiku 5.5 Supported
Claude Sonnet 5.5 Supported
GLM-5.3-Flash Supported
GPT-5.4 Pro Supported
GPT-5.6 Sol Supported
GPT-6 Sol Supported
GPT-6.1 Terra Supported
Gemini 3.1 Pro Supported
Google Cloud Platform Supported
Kimi Supported
Kimi K2.5 Supported
Kimi K3.1 Pro Supported
Microsoft Azure Supported
MiniMax M3 Supported
OpenRouter Supported

Integrations

Anthropic Supported
OpenAI Supported
Claude Fable 5 Not Supported
Claude Fable 5.5 Not Supported
Claude Haiku 5.5 Not Supported
Claude Sonnet 5.5 Not Supported
GLM-5.3-Flash Not Supported
GPT-5.4 Pro Not Supported
GPT-5.6 Sol Not Supported
GPT-6 Sol Not Supported
GPT-6.1 Terra Not Supported
Gemini 3.1 Pro Not Supported
Google Cloud Platform Not Supported
Kimi Not Supported
Kimi K2.5 Not Supported
Kimi K3.1 Pro Not Supported
Microsoft Azure Not Supported
MiniMax M3 Not Supported
OpenRouter Not Supported
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