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Devx

Name: Devx
Author: 9bests.com

Ultra-fast terminal AI coding agent and vibe-coding assistant for Android (Termux), Windows, macOS, and Linux. Features dual PLAN/AGENT modes, multimodal vision, a built-in live web server, diagnostics, and snapshot rollback.

★★★★☆ 4.3 Free (Open Source, MIT) + provider API cost

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📖 9bests In-Depth Review Aug 30, 2026

Devx Review 2026: A fast terminal AI coding agent for Termux, Windows, macOS, and Linux

Devx is an ultra-fast terminal AI coding agent with dual PLAN/AGENT modes, multimodal vision, a live web server, self-healing diagnostics, and snapshot rollback. Runs on Android Termux, Windows, macOS, and Linux.

Read the full long-form review & analysis →

💡 9bests Editorial Buying Advice

Why choose Devx: Ultra-fast terminal AI coding agent and vibe-coding assistant for Android (Termux), Windows, macOS, and Linux. Features dual PLAN/AGENT modes, multimodal vision, a built-in live web server, diagnostics, and snapshot rollback.

Optimal workflow match: Ideal for teams seeking automated and streamlined AI workflows.

✅ Pros / Key Advantages

• Dual-brain PLAN (safe architect) and AGENT (autonomous executor) modes
• Multimodal vision — paste screenshots straight from clipboard
• Self-healing diagnostics (tsc, node --check, py_compile, cargo check) with auto-fix
• Snapshot rollback via /undo reverts the last AI turn cleanly
• Universal provider support: OpenRouter, Gemini, DeepSeek, Groq, Mistral, OpenAI, Anthropic, Ollama, LM Studio

❌ Cons / Limitations

• Android/Termux-first heritage; mobile setup is the headline use case
• Requires an API key for any model provider
• CLI workflow has a learning curve for non-terminal users

💰 Pricing Plans & Structure

Free (Open Source, MIT) + provider API cost

Pricing details are gathered from public sources and are subject to change. Please visit the official website for real-time rates and trial terms.

Pricing verified from official public sources · Reviewed by Bill (Lead Editor)

🎯 Who should use Devx

Best suited for users focused on digital productivity and AI automation who value dual-brain plan (safe architect) and agent (autonomous executor) modes.

⚠️ Who should look elsewhere

Users who require features outside its core scope or cannot accommodate android/termux-first heritage; mobile setup is the headline use case may benefit from exploring alternative tools in this category.

🚀 Common use cases

Autocompleting and refactoring code

Multi-file AI edits

Debugging and test generation

⚖️ Direct Head-to-Head Comparisons

Curated Matchups

Compare Matrix → Free (Open Source, MIT) + provider API cost vs Free / $20/mo

Devx vs Cursor

Side-by-side analysis of features, scores, pros, and cons.

Compare Matrix → Free (Open Source, MIT) + provider API cost vs $10-39/mo

Devx vs GitHub Copilot

Side-by-side analysis of features, scores, pros, and cons.

Compare Matrix → Free (Open Source, MIT) + provider API cost vs Free / $15/mo

Devx vs Windsurf (Codeium)

Side-by-side analysis of features, scores, pros, and cons.

Compare Matrix → Free (Open Source, MIT) + provider API cost vs Free / $25/mo

Devx vs Replit Agent

Side-by-side analysis of features, scores, pros, and cons.

❓ Frequently asked questions

Is Devx free?

Devx is freemium (Free (Open Source, MIT) + provider API cost): core features are free, paid plans unlock higher limits and advanced features.

What is Devx used for and what are its strengths?

Key strengths of Devx: Dual-brain PLAN (safe architect) and AGENT (autonomous executor) modes, Multimodal vision — paste screenshots straight from clipboard. Ultra-fast terminal AI coding agent and vibe-coding assistant for Android (Termux), Windows, macOS, and Linux. Features dual PLAN/AGENT modes, multimodal vision, a built-in live web server, diagnostics, and snapshot rollback.

What is the best alternative to Devx?

If you're looking for an alternative to Devx, consider Cursor: it stands out for Best AI code editor, Multi-file editing.

How do I choose the right alternative to Devx?

Selection advice: compare ratings, pricing, and core features within the AI Coding category, then match to your own workflow. See the comparison matrix and Top alternatives list on this page.