ChatGPT vs Claude vs Devin: Which AI Should a Tradesperson Actually Use?

Every week a new AI tool claims to change everything. Most don't. Here are the ones that actually matter for tradespeople right now — and exactly what each one is good for.

ChatGPT (OpenAI)

Best for: general writing, brainstorming, quick answers, and learning new concepts.

Why it wins: It's the most versatile. If you have one AI tool, this is it. The free tier handles 90% of what tradespeople need: quotes, emails, customer messages, plans, and explanations. The current model is GPT-5.4.

Where it struggles: Can be overly confident about technical details. Always verify anything compliance-related against the official source.

Cost: Free tier is generous. Plus ($20/mo) gets you faster responses, GPT-5.4, GPT Image generation, and the Canvas editor.

Claude (Anthropic)

Best for: long documents, complex reasoning, and nuanced writing.

Why it wins: Claude reads and analyzes longer documents better than ChatGPT. If you need to digest a 20-page contract, summarize a long email chain, or write a detailed proposal, Claude is sharper. The current model is Opus 4.6.

Where it struggles: No image generation. Slightly less "chatty" — which is good for business, less fun for brainstorming.

Cost: Free tier available. Pro ($20/mo) for higher limits.

Devin (devin.ai)

Best for: building real apps and tools without knowing how to code.

Why it wins: Devin is an AI coding agent — you describe what you want in plain English and it writes the code. It's the literal "trade to tech" path: you bring the domain knowledge (what the tool should do), Devin brings the coding. Pairs with GLM-5.2 (free via Z.ai) for near-unlimited builds on a budget.

Where it struggles: Results vary with complexity. Best for focused, well-described tasks. You still need to test and verify the output.

Cost: Pro plan ~$20/mo. Free tier available with limits.

The verdict

• Start with ChatGPT free. Use it for quotes, emails, plans, and learning.
• Add Claude if you deal with long documents or need deeper analysis.
• Add Devin when you're ready to build real tools and apps.
• Use GLM-5.2 (free via Z.ai) as a budget alternative with near-unlimited capacity.

Don't buy all three on day one. The free tier of ChatGPT will save you hours this week. Prove the value first, then expand.