AtomCode CodingPlan Free Guide: GLM-5.1 Powered

AtomCode is an open-source terminal AI coding agent, similar to Claude Code but more open. It supports various LLMs including GLM-5.1.

The key point: AtomCode itself is completely free and open-source, while GLM-5.1 can be used at low cost through a Coding Plan subscription.

What is AtomCode

AtomCode is an open-source AI coding agent written in Rust, supporting macOS, Linux, Windows, and HarmonyOS PC.

Core features:

• Autonomous multi-step execution: read, edit, run, verify code
• 21 built-in tools: file read/write, search/replace, bash commands, code graph analysis
• Supports any OpenAI-compatible API: Claude, OpenAI, DeepSeek, GLM, Qwen, Ollama, etc.
• VS Code and JetBrains plugins
• Skills + plugin ecosystem, compatible with Claude Code ecosystem

One-command install:

curl -fsSL https://raw.atomgit.com/atomgit_atomcode/atomcode/raw/main/scripts/install.sh | sh

Open source on GitHub, 100% AI-generated codebase.

GLM-5.1 Coding Plan

GLM-5.1 is Zhipu’s latest generation coding model, designed for software engineering and large Agent tasks.

Free trial:

• Free limited-use at chat.z.ai
• BigModel platform gives new accounts plenty of trial tokens
• No credit card, no commitment

Coding Plan subscription (for daily use):

• Lite: ~$18/month (annual ~$12.60/month), ~80 prompts per 5 hours
• Pro: ~$72/month, ~5x Lite usage
• Max: ~$160/month, ~20x Lite usage

All tiers are directly compatible with Claude Code, Cursor, Cline, and other mainstream coding tools.

How to Combine

Option 1: Completely free

• AtomCode is open-source and free
• Connect Ollama local models (free)
• Or connect BigModel free tokens

Option 2: Low-cost subscription

• AtomCode open-source free
• GLM Coding Plan Lite $18/month
• 80 Agent requests/month, sufficient for light use

Option 3: Pay-as-you-go

• AtomCode open-source free
• Pay per Token, use what you need

Connect Other Models

AtomCode’s models aren’t limited to GLM-5.1. You can connect:

• Claude Sonnet 4.6/Opus 4.6 — via Anthropic API
• GPT-4o/GPT-4.1 — via OpenAI API
• DeepSeek V3/R1 — via DeepSeek API
• Qwen Plus/Max — via Alibaba Cloud Bailian
• SiliconFlow — aggregator platform, multiple models
• Ollama — run locally, completely free

Real-World Experience

AtomCode’s advantage is openness. Claude Code only uses Claude models, Cursor mainly uses OpenAI. AtomCode lets you choose freely — use cheap GLM when you want, switch to Ollama anytime.

The code graph tools (8 built-in) are a standout: symbol indexing, call chain analysis, impact assessment. These let the model truly understand large codebase structure, not just blindly modify files.

Summary

AtomCode itself is completely free and open-source. GLM-5.1 is available through Coding Plan starting at $18/month. Together, they form a low-cost, efficient AI coding solution.

Project: atomcode.atomgit.com

Data current as of July 14, 2026. Prices and available models may change.