GSD 2 vs Claude Code: Which AI Coding Tool Wins?

GSD 2 just dropped and it's no longer a Claude Code add-on — it's a standalone CLI competitor. I ran both tools head-to-head on the same project, and the results were decisive: Claude Code built a better app in 4.5 minutes for practically nothing, while GSD 2 took 90 minutes and cost almost $30 in API fees. Here's the full breakdown so you can make the right call for your workflow.

What Actually Changed in GSD 2?

The original GSD (Get Shit Done) was an orchestration layer that lived inside Claude Code. You used it as a command structure on top of Claude Code's existing capabilities. It was fantastic at breaking big projects into phases, then into individual tasks, and spinning up sub-agents with fresh context windows for each one.

GSD 2 is a completely different animal. It's now a standalone CLI tool built on the PI SDK. That means it doesn't run inside Claude Code anymore — it runs independently, using API calls directly.

Here's what that shift means in practice:

• It's its own agentic coding tool, not an add-on
• It requires API keys (Anthropic, OpenRouter, etc.) instead of your Claude Code subscription
• It has an auto mode where you give it a prompt and walk away
• It still uses the same core philosophy — break plans into phases, phases into tasks, one task per context window

The "iron rule" from GSD 1 carries over: a task must fit in one context window. If it can't, it's two tasks. Even with the larger context windows in Opus 4.6 and Sonnet 4.6, models perform better at the beginning of a context window than at token 700,000. GSD 2 enforces that discipline automatically.

How Does GSD 2 Actually Work?

When you fire up GSD 2, it uses a two-terminal setup:

• Terminal 1 (Auto): The workhorse. This is where GSD 2 actually plans, codes, and executes autonomously.
• Terminal 2 (Discussion): Your feedback channel. Anything you discuss here gets picked up by the auto terminal because GSD 2 reads everything off disk.

The workflow goes like this:

1. Initialize a project with /gsd and paste your prompt
2. GSD 2 confirms scope — similar to how Claude Code asks clarifying questions
3. Planning phase kicks off — it writes project.md and requirements.md as the source of truth
4. You choose auto or step mode — auto lets it run unsupervised; step mode keeps you hands-on
5. Execution — sub-agents tackle each task in isolated context windows

GSD 2 also includes a token optimization system with budget ceilings. You can cap spending per project so you don't wake up to a $500 bill. For my test, I set a $20 ceiling (which it blew past — more on that below).

What About the Cost Problem?

Here's the thing most people get wrong about GSD 2: they see it supports Claude Max plan OAuth and think they can just use their $200/month subscription. Do not do this.

Anthropic has been increasingly explicit — you cannot use your Max plan outside of Claude Code. People got banned doing exactly this with OpenClaw, and the same rules apply here. Your $200 Max plan is subsidized to the tune of $2,500 to $5,000 in actual API value. Anthropic is not going to let you export that subsidy to a third-party tool.

So what does that leave you with? Pure API costs. Whether you're going through OpenRouter or directly through Anthropic's API, you're paying full price. And full-price Anthropic models are not cheap.

The Head-to-Head Test: Building an Expense Tracker

I gave both tools the exact same prompt: build a personal expense tracker web app with four features:

• Expense form for adding new entries
• Expense list to view all expenses
• Dashboard with charts and visualizations
• Monthly summary card with spending breakdowns

Design spec: clean, modern, dark mode. Pre-filled with dummy data. The prompt was intentionally vague enough to see creative divergence but specific enough to grade results.

For GSD 2, I used Opus 4.6 for research/planning and Sonnet 4.6 for execution. For Claude Code, I started in plan mode, approved the plan, and let it run.

Who Won on Visual Quality?

Claude Code, and it wasn't close. The Claude Code build came out with a cleaner, more polished UI. The GSD 2 build hit all the required features — dashboard, charts, expense form, expense list — but the front-end design left something to be desired. The add expense form and expense list in particular looked rough compared to Claude Code's output.

Both tools delivered every feature I asked for. But if you're shipping something to users, the Claude Code version was ready to go. The GSD 2 version needed design cleanup.

Who Won on Speed?

This one is almost embarrassing.

• Claude Code: 4 minutes, 38 seconds
• GSD 2: Approximately 1 hour, 30 minutes

The GSD 2 build got hung up multiple times during execution. At one point, it stalled for 17 minutes. Then again for almost 40 minutes. I tried running gsd stop — nothing. I had to kill the process entirely, restart, and it stalled again. It took a third attempt to finally get a completed build.

To be fair, GSD 2 wasn't burning tokens while stalled. But the wall-clock time difference is massive: 4.5 minutes vs. 90 minutes for the same output.

Who Won on Cost?

• Claude Code: Less than 1% of my 5-hour usage block (effectively pennies on a $200/month Max plan)
• GSD 2: $27.20 in API costs

That's not a typo. Twenty-seven dollars and twenty cents for a single expense tracker app. Using Opus 4.6 for planning and Sonnet 4.6 for execution, the API bill added up fast.

And this raises a secondary problem with GSD 2: model selection becomes a real decision. In Claude Code, I can throw Opus 4.6 with 1M context and max effort at everything without thinking twice. With GSD 2, every model choice has a dollar sign attached. Was Opus overkill for planning an expense tracker? Probably. But figuring out the right model for each job is a gray area, not an exact science.

When Would GSD 2 Actually Make Sense?

Look, I'm not saying GSD 2 is worthless. The underlying philosophy is still sound:

• Context window management is genuinely better than what Claude Code does natively
• The planning structure (project > phases > tasks) is thorough and well-organized
• Auto mode is a compelling vision for fully autonomous coding

GSD 2 could make sense if:

• You're already paying API costs and not on a Claude Code subscription
• You're building massive projects where context window discipline matters more than speed
• You prefer the GSD workflow and the planning scaffolding it provides
• You're using cheaper models through OpenRouter where the cost gap narrows

But if you're on Claude Code Max? There's almost no reason to switch. The cost difference is too extreme. You're comparing pennies to $27+ per project, and the Claude Code output was actually better.

The Verdict

The results speak for themselves:

Metric	Claude Code	GSD 2
Build time	4 min 38 sec	~90 minutes
Cost	<1% of plan	$27.20
Visual quality	Clean, polished	Functional, rough
Features delivered	All 4	All 4
Reliability	No issues	Stalled 3 times

Claude Code wins this round decisively. Better output, faster execution, dramatically lower cost, and zero reliability issues.

GSD 2's core ideas are strong, but the moment you step outside the Claude Code ecosystem and onto raw API costs, the math stops working — especially for small to medium projects. Maybe for truly massive builds, GSD 2's planning discipline pays dividends. But right now, for most developers, Claude Code is the clear choice.

FAQ

Can I use my Claude Code Max plan with GSD 2?

Technically the OAuth option exists, but Anthropic has made it clear you cannot use your Max plan outside of Claude Code. People have been banned for this. Use a proper API key instead.

Is GSD 2 free to use?

The tool itself is free and open source. However, you need to pay for API access to the AI models it uses. In my test, a single project cost $27.20 using Anthropic models through OpenRouter.

What models should I use with GSD 2?

GSD 2 lets you set different models for research/planning vs. execution. Using Opus 4.6 for planning and Sonnet 4.6 for execution is a reasonable setup, but consider cheaper models for simpler projects to manage costs.

Is GSD 2 better for larger projects?

Possibly. The argument is that GSD 2's strict context window management and task decomposition would shine on complex, multi-phase builds where Claude Code might struggle with context degradation. But this hasn't been proven at scale yet, and the cost implications are significant.

Should I switch from Claude Code to GSD 2?

If you're on a Claude Code Max plan, no. The subsidized pricing makes Claude Code dramatically cheaper, and in this test it also produced better results faster. GSD 2 is more interesting if you're already in the API-only world.

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