AI Coding Tools

A comprehensive comparison of AI-powered coding agents and assistants in 2026.

Nexus Terminal — by Abhay Raj

Multi-agent AI terminal workspace built by Abhay Raj. Run Claude Code, Codex CLI, Gemini CLI, Qwen, Aider, and 10+ other AI agents — side-by-side in a brutalist desktop app. Built with Tauri + React.

GitHub: github.com/abhay-byte/nexus
Latest Release: v0.1.8 — Headless Server Mode
Type: Desktop app (Tauri) + Headless web server
License: MIT

Agents	13+ AI coding agents — Claude Code, Codex CLI, Gemini CLI, Aider, OpenCode, Qwen Code, Junie, Kiro, Kilo Code, Cline, Continue, Goose, Amp — auto-detected on PATH
Multi-agent	Run multiple agents side-by-side in the same project with split panes (up to 2×2)
Terminal	True-color PTY (xterm-256color), session persistence across restarts, batched streaming for noisy agents
Kanban	Built-in Kanban board with Todo / In Progress / Done / Blocked — tasks persist across restarts
MCP	Shared MCP registry — configure once in Settings, sync across all projects
Headless Mode	v0.1.8: Run as headless server — access via any browser on local network (HTTP API + WebSocket)
Mobile	v0.1.8: Portrait mode — slide-out sidebar, scrollable kanban, responsive layout
UI	Brutalist design — high-contrast dark mode, Space Grotesk typography, yellow accent (#ffcc00)

Linux (DEB)

Linux (RPM)

Windows

Headless

$ wget https://github.com/abhay-byte/nexus/releases/download/v0.1.8/Nexus_0.1.8_amd64.deb $ sudo dpkg -i Nexus_0.1.8_amd64.deb

$ wget https://github.com/abhay-byte/nexus/releases/download/v0.1.8/Nexus-0.1.8-1.x86_64.rpm $ sudo rpm -i Nexus-0.1.8-1.x86_64.rpm

$ Download nexus-windows-x86_64.exe from releases

$ wget https://github.com/abhay-byte/nexus/releases/download/v0.1.8/nexus-headless-linux-x86_64 $ chmod +x nexus-headless-linux-x86_64 && ./nexus-headless-linux-x86_64 # Open http://localhost:7878 in your browser

Terminal-Based Coding Agents

OpenCode

Open-source terminal coding agent built in Go by Anomaly (SST team). 142K+ GitHub stars, 6.5M+ monthly active devs.

Website: opencode.ai
GitHub: github.com/anomalyco/opencode

Feature	Details
Type	Open-source CLI agent (MIT)
Models	75+ providers (OpenAI, Anthropic, DeepSeek, local)
Pricing	Free (CLI) + Go ($10/mo) + Zen (pay-as-you-go)
Best For	Terminal-first devs who want model flexibility
Key Strength	Multi-model support, no vendor lock-in

macOS

Linux

Windows

$ curl -fsSL https://opencode.ai/install | bash $ brew install anomalyco/tap/opencode $ npm install -g opencode-ai $ docker run -it --rm ghcr.io/anomalyco/opencode

$ curl -fsSL https://opencode.ai/install | bash $ sudo pacman -S opencode $ docker run -it --rm ghcr.io/anomalyco/opencode

$ npm install -g opencode-ai $ scoop install opencode $ choco install opencode

Claude Code (Anthropic)

Anthropic's terminal coding agent. Fastest-growing AI coding product — $2.5B annualized revenue.

Website: code.claude.com
Pricing: claude.com/pricing

Feature	Details
Type	Terminal agent (proprietary)
Models	Claude Opus 4.7, Sonnet 4.6, Haiku 4.5
Pricing	Pro $20/mo, Max $100/$200/mo, Team $25-125/seat
Best For	Complex reasoning, refactoring, architecture
Key Strength	Best code quality, Opus 4.7 is top-tier

macOS

Linux

Windows

$ curl -fsSL https://claude.ai/install.sh | bash $ brew install claude-code $ npm install -g @anthropic-ai/claude-code

$ curl -fsSL https://claude.ai/install.sh | bash $ npm install -g @anthropic-ai/claude-code

$ winget install Anthropic.ClaudeCode $ irm https://claude.ai/install.ps1 | iex $ npm install -g @anthropic-ai/claude-code

GPT Codex (OpenAI)

OpenAI's coding agent across CLI, IDE, ChatGPT, and iOS.

Website: developers.openai.com/codex
Pricing: chatgpt.com/codex/pricing

Feature	Details
Type	Multi-surface agent (CLI + IDE + web)
Models	GPT-5.5, GPT-5.4, GPT-5.4-mini, GPT-5.3-Codex
Pricing	Bundled in ChatGPT Plus $20/mo, Pro $100-200/mo
Best For	All-in-one coding + chat + agent workflows
Key Strength	Deep OpenAI ecosystem integration

macOS

Linux

Windows

$ npm install -g @openai/codex $ curl -fsSL https://codex.openai.com/install.sh | bash

$ npm install -g @openai/codex

Gemini CLI (Google)

Google's open-source AI agent for the terminal. ReAct loop agent with local/remote MCP servers. Unmatched free usage tier with Gemini 2.5 Pro.

Website: google-gemini.github.io/gemini-cli
GitHub: github.com/google-gemini/gemini-cli
Blog: Introducing Gemini CLI

Feature	Details
Type	Open-source terminal AI agent (Apache 2.0)
Models	Gemini 2.5 Pro (generous free tier)
Pricing	Free with personal Google account
Best For	Cost-effective AI coding, content creation
Key Strength	ReAct agent, MCP servers, free Gemini access

macOS

Linux

Windows

$ brew install gemini-cli $ npm install -g @google/gemini-cli

$ npm install -g @google/gemini-cli

Aider

Open-source AI pair programming in your terminal. Git-native commits, multi-file edits, and support for any LLM.

Website: aider.chat
GitHub: github.com/paul-gauthier/aider

Feature	Details
Type	Open-source AI pair programmer
Models	Claude, GPT-4, Gemini, DeepSeek, local Ollama
Pricing	Free (OSS), BYO API key
Best For	Git-native workflows, pair programming
Key Strength	Map of repo architecture, auto-commits with messages

macOS

Linux

Windows

$ pip install aider-chat $ brew install aider

$ pip install aider-chat

Qwen Code (Alibaba)

Alibaba's open-source AI agent for the terminal, optimized for the Qwen3-Coder model. Multi-protocol with support for OpenAI, Anthropic, Gemini APIs.

Website: qwen.ai/qwencode
GitHub: github.com/QwenLM/qwen-code
Docs: qwenlm.github.io/qwen-code-docs

Feature	Details
Type	Open-source terminal AI agent
Models	Qwen3-Coder (480B-A35B), OpenAI/Anthropic/Gemini compatible
Pricing	Free (OSS), BYO API key or Alibaba Cloud plan
Best For	Developers using Qwen models or multi-protocol flexibility
Key Strength	Optimized for Qwen3-Coder, MCP servers, IDE integration

macOS

Linux

Windows

$ npm install -g @qwen/qwen-code $ pip install qwen-code

Junie CLI (JetBrains)

JetBrains' LLM-agnostic coding agent that runs directly in your terminal. IDE integration with JetBrains IDEs, CI/CD pipeline support.

GitHub: github.com/JetBrains/junie
Docs: junie.jetbrains.com

Feature	Details
Type	LLM-agnostic terminal coding agent
Models	BYO LLM (any provider)
Pricing	Free tier, subscription for advanced features
Best For	JetBrains IDE users, CI/CD automation
Key Strength	JetBrains integration, code review, PR capabilities

macOS

Linux

Windows

$ Via JetBrains Toolbox $ npm install -g @jetbrains/junie

Kiro (AWS)

Amazon's agentic IDE and CLI built around spec-driven development — generates requirements docs, technical designs, and implementation task lists before coding.

Website: kiro.dev
GitHub: github.com/kirodotdev/Kiro
AWS Docs: aws.amazon.com/kiro

Feature	Details
Type	Agentic IDE + CLI (public preview)
Models	Multi-model (frontier LLMs)
Pricing	Free public preview
Best For	Structured spec-driven development
Key Strength	Requirements → design → tasks → code pipeline

macOS

Linux

Windows

$ brew install kiro $ npm install -g @kirodev/cli

$ npm install -g @kirodev/cli

Kilo Code

Open-source VS Code AI coding extension with 500+ model support including GPT-5.5, Claude Opus 4.7, and Gemini 3.1 Pro Preview.

VS Code Marketplace: kilocode.Kilo-Code
GitHub: github.com/Kilo-Org/kilocode
Website: kilo.ai

Feature	Details
Type	Open-source VS Code extension
Models	500+ (GPT-5.5, Claude Opus 4.7, Sonnet 4.6, Gemini 3.1 Pro)
Pricing	Free tier, transparent provider-rate pricing
Best For	Developers who want maximum model choice in VS Code
Key Strength	Superset of Roo Code/Cline, planning + refactoring + orchestration

VS Code

CLI

# Install from VS Code Marketplace $ code --install-extension kilocode.Kilo-Code

$ npm install -g @kilo-org/cli

Cline

Open-source AI coding assistant for VS Code, JetBrains, and standalone CLI. Human-in-the-loop with full agentic capabilities — files, terminal, browser.

GitHub: github.com/cline/cline
VS Code: saoudrizwan.claude-dev
CLI Docs: docs.cline.bot

Feature	Details
Type	Open-source AI assistant (IDE + CLI)
Models	30+ LLM providers
Pricing	Free (OSS), BYO API key
Best For	Autonomous multi-step coding tasks
Key Strength	File editing + terminal + browser, human approval flow

VS Code

CLI

$ code --install-extension saoudrizwan.claude-dev

$ npm install -g @cline/cli # Also available as JetBrains plugin

Continue

Open-source AI coding assistant for VS Code and JetBrains. Model-agnostic with support for any LLM including local models via Ollama/LM Studio.

Website: docs.continue.dev
GitHub: github.com/continuedev/continue

Feature	Details
Type	Open-source AI coding assistant (IDE + CLI)
Models	Any LLM (OpenAI, Claude, Gemini, local Ollama/LM Studio)
Pricing	Free (OSS), BYO API key
Best For	Privacy-focused, local-first AI coding
Key Strength	Source-controlled AI checks in CI, tab autocomplete, any model

VS Code

JetBrains

$ code --install-extension continuedev.continue

# Install from JetBrains Marketplace # Or via Continue CLI: $ npm install -g @continuedev/cli

Goose (Block)

Block's (formerly Square) open-source general-purpose AI agent. Desktop app, CLI, and API for code, workflows, research, automation, and data analysis.

Website: goose-docs.ai
GitHub: github.com/aaif-goose/goose
Blog: Block Open Source

Feature	Details
Type	General-purpose AI agent (desktop + CLI + API)
Models	BYO LLM (any provider)
Pricing	Free (OSS, Apache 2.0)
Best For	Beyond-code tasks — research, writing, automation, data
Key Strength	Native MCP integration, not just for coding

macOS

Linux

Windows

$ brew install goose $ npm install -g @goose/cli

$ npm install -g @goose/cli $ cargo install goose-cli

$ npm install -g @goose/cli

Amp (Sourcegraph)

Sourcegraph's enterprise-grade agentic coding agent. Auto-refactors entire codebases, reviews code for bugs/security/performance, and generates tests.

Website: ampcode.com
Manual: ampcode.com/manual
Sourcegraph: sourcegraph.com/amp

Feature	Details
Type	Agentic coding agent (CLI + VS Code)
Models	Frontier multi-model
Pricing	Free tier + enterprise plans
Best For	Large codebase refactoring, code review at scale
Key Strength	Sourcegraph code intelligence, `amp review`, Neo CLI with plugins

macOS

Linux

VS Code

$ npm install -g @sourcegraph/amp $ brew install sourcegraph/amp

$ npm install -g @sourcegraph/amp

$ code --install-extension sourcegraph.amp

Comparison Table

Tool	Type	Starting Price	Model Access	Best Use Case
OpenCode	CLI (OSS)	Free / $10 Go	75+ providers	Maximum flexibility
Claude Code	CLI	$20/mo	Claude only	Complex reasoning
GPT Codex	CLI+IDE	$20/mo	GPT models	OpenAI ecosystem
Gemini CLI	CLI (OSS)	Free	Gemini only	Cost-effective coding
Aider	CLI (OSS)	Free	Any LLM + local	Pair programming
Qwen Code	CLI (OSS)	Free	Qwen + multi-protocol	Qwen model users
Junie CLI	CLI	Free tier	BYO LLM	JetBrains integration
Kiro	IDE+CLI	Free preview	Multi-model	Spec-driven dev
Kilo Code	VS Code ext	Free tier	500+ models	Model variety
Cline	IDE+CLI (OSS)	Free	30+ providers	Autonomous tasks
Continue	IDE+CLI (OSS)	Free	Any LLM + local	Local-first, privacy
Goose	Desktop+CLI	Free (OSS)	BYO LLM	Beyond-code + MCP
Amp	CLI+IDE	Free + Enterprise	Frontier multi-model	Enterprise refactoring
Nexus Terminal	Desktop + Web	Free (OSS/MIT)	13+ agents	Multi-agent workspace