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Plandex

AI dev for big changes

Most AI coding assistants fall apart on real projects. Context gets lost across multiple files. Building entire features from scratch? They can't handle it. Plandex crushes heavyweight development tasks that break other…

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Most AI coding assistants fall apart on real projects. Context gets lost across multiple files. Building entire features from scratch? They can't handle it.

Plandex crushes heavyweight development tasks that break other tools. This open-source terminal agent juggles up to 2M tokens of context — mapping your entire project structure with tree-sitter. You can review changes across dozens of files in its diff sandbox before committing anything. Smart context management means it won't forget what you're building halfway through.

Picture a senior full-stack developer building a new authentication system. They'd fire up Plandex to scaffold the entire feature. Database migrations. API endpoints. Frontend components. Tests. All generated and reviewed in one workflow. Plandex executes commands automatically and rolls back on failure.

Full auto mode handles everything. Step-by-step control keeps you in charge.

Plandex combines models from Anthropic, OpenAI, and Google to avoid vendor lock-in. Different stages of development get the right AI for the job. Serious attention follows — 14,000+ GitHub stars and over 10,000 plans created on Plandex Cloud.

The cloud service is shutting down though. You'll need to run this locally or find another hosting solution. Still, for developers who build complex features rather than quick fixes, Plandex handles the kind of multi-file, multi-step work that breaks simpler tools.

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Frequently asked

6 questions
How much context can Plandex actually handle compared to other AI coding tools?
Plandex handles up to 2 million tokens of context -- that's huge. Most AI coding assistants tap out around 128k-200k tokens. It uses tree-sitter to map your whole project, so it won't forget what you're building across files. You can work on massive codebases without the AI losing track halfway through.
What happens when Plandex Cloud shuts down - can I still use it?
Yeah, Plandex is open-source so you can run it locally. You'll need to set up your own hosting instead of using their cloud service. The core stuff works the same whether it's local or on your own server.
Does Plandex work with different AI models or am I locked into one provider?
Plandex mixes models from Anthropic, OpenAI, and Google -- no vendor lock-in. It picks the right AI model for different dev stages automatically. You're not stuck with one provider's strengths and weaknesses, which gives better results across coding tasks.
How does the diff sandbox work when Plandex makes changes across multiple files?
The diff sandbox shows you all proposed changes across dozens of files before committing anything. You see exactly what Plandex wants to modify, add, or delete in your whole project. It only writes to your files after you approve the changes.
What's the difference between full auto mode and step-by-step control in Plandex?
Full auto mode handles everything automatically. Plandex executes commands, makes changes, handles failures -- no stopping for approval. Step-by-step keeps you in charge of each decision. You review and approve each action before it happens. Switch between modes based on how much control you want.
Can Plandex actually build complete features from scratch or just make small edits?
Plandex crushes entire features from the ground up. Database migrations, API endpoints, frontend components, tests -- all in one workflow. It's built for heavyweight dev tasks with multiple files and complex dependencies. Small edits work fine, but that's not where it really shines compared to simpler tools.

Traffic

Estimated monthly website visits · last 9 months

3.3K visits/mo
Monthly visits
3.3K
↓ 76.9% MoM
Global rank
#5,700,946
IN #501,699
Category rank
#69
AI Coding Assistant
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