AI Coding with Context Management

Select relevant context. Generate optimized prompts. Ship quality code with Claude & DeepSeek.

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Structured Prompt Creation for Coding

16x Prompt helps developers manage source code context and craft prompts for complex coding tasks on existing codebases.

Code Context Management

Custom Instructions

Complex Tasks

API Integrations

Prompt Management

Claude 3.7 & DeepSeek

Token Limit Tracking

No Black Box

16x Prompt screenshot
16x Prompt screenshot

Copy Prompt. Or Send via API.

You can either copy the final prompt, or send it via API.

16x Prompt supports API integrations with OpenAI, Anthropic, DeepSeek, OpenRouter, Ollama, Azure OpenAI, DeepInfra, OxyAPI or other services that offers OpenAI API compatibility.

Compare LLM Responses

When using API, you can compare the code output of different LLM models (for example, GPT-4o & Claude 3.7 Sonnet) side-by-side to see which one is the best for your use case.

16x Prompt screenshot
16x Prompt settings screenshot

Prompt Management

Save your commonly used prompts such as refactoring, creating a new page, writing docs and other repetitive tasks as task instructions to reuse them later.

Custom Instructions & Prompt Customization

Craft and save your custom instructions to use across different tech stacks like Next.js, Python and SQL.

Fine-tune your prompt with various optimization settings to get the best results.

16x Prompt settings screenshot
16x Prompt screenshot

Workspaces

Organize your source code context using workspaces to manage multiple repositories and projects in one place and switch between them easily, for example, a landing page, a blog, and a web app.

You can also include multiple repositories in a single workspace to work on related projects, for example, a frontend and backend repository that are part of the same project.

Testimonials

Hear from the users of 16x Prompt.

I was impressed with the UI/UX of the tool and the power it offers. I've used a lot of AI tools in the past, but 16x Prompt stands out.

Chance

16x Prompt User

The tool you've created is extremely helpful and I bought it "sight unseen" given its price.

Steve

16x Prompt User

Got a curd problems that cursor just can’t get around it. Tried 16x with opus and it finished in one go.

Unluckyknight

16x Prompt User

Although my prompt engineer is pretty similar but yours reduces the copy paste hassle as i can just drag and drop the file.

Ill-Information-2086

Reddit User

16x Prompt - Streamlined ChatGPT for Coding | Product Hunt

Leave Coding to AI

Leverages ChatGPT and Claude to complete coding tasks in 5 minutes.

Add Source Code to Prompt

Enter instruction and select source code files to generate final prompt. Copy in one click and paste into ChatGPT, Claude, or DeepSeek.

Formatting Instructions

The app automatically adds optimal formatting instructions to the prompt to generate ready-to-use code. You can also create custom formatting instructions for different use cases.

Optimized Prompt

The app automatically optimizes the source code and prompt for best results. You can also customize various options in settings.

Token Limit Tracking

Keep your prompt within LLM's token limit with the built-in token limit counter.

ChatGPT Plus and Claude Pro

Use your existing ChatGPT Plus or Claude Pro subscription to access powerful models without paying for API calls. Simply copy the final prompt and paste it into ChatGPT or Claude UI.

Local Data Privacy

The app works locally without Internet connection. You can copy-paste final prompt into LLMs running locally to protect your privacy.

16x Prompt Video Demo

Experience Prompt-Driven Development. See how 16x Prompt works for real-world coding tasks in this video.

16x Prompt demo video

FAQs

Frequently asked questions about 16x Prompt.

General

Which programming languages are supported?

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16x Prompt supports all major programming languages, including Python, JavaScript, TypeScript, Java, C++, SQL and many more.

Which frameworks are supported?

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16x Prompt supports popular frameworks like React, Vue, Next.js, Flask, Django, and more.

What does 16x Prompt do exactly?

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16x Prompt is a desktop application that helps you compose prompts from various inputs. It generates prompts from the task instructions, source code files and the formatting instructions. The prompts can then be fed into ChatGPT or other LLMs to generate code. Check out our Basic Usage Guide to learn more.

Is 16x Prompt a cloud-based service?

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16x Prompt is a desktop application that runs locally on your machine. It is not a cloud-based service. Prompt generation is done locally on your machine. However, the API integration features require you to enter your own API key and connect to the respective API cloud services like OpenAI or Anthropic.

Does 16x Prompt support dark mode?

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Yes, 16x Prompt supports dark mode. You can switch between light and dark mode from the top right corner of the application. The application will remember your choice and open in the selected mode next time.
Pricing

Is 16x Prompt free?

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Yes, 16x Prompt is free to download and use. However, the free version can only generate 10 prompts per day. You can purchase a license to remove this limitation.

Can I get an invoice for my purchase?

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Invoice is only available for Life-time License (Team). You can enter your company name and tax ID during the purchase process to generate an invoice. Invoice is not available for Life-time License (Individual), as it costs extra money to generate an invoice.

How many devices can I use 16x Prompt license on?

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Each license for Individual can be activated on up to 3 devices. Licenses for team can be activated on up to 10 devices. If you need to activate on more devices, please contact us for further assistance.

Can I deactivate a device and activate on another device?

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Self-service deactivation is supported since version 0.0.59. You can deactivate a device from the settings page of the application and activate on another device. This allows you to transfer the license to another device without contacting support. If you have any issues, please contact us for further assistance.

Does 16x Prompt come with OpenAI API key?

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No, 16x Prompt does NOT come with OpenAI API key. You need to have your own OpenAI API key to use the OpenAI API integration feature. You can get your API key from OpenAI website.

Does 16x Prompt come with Anthropic API key?

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No, 16x Prompt does NOT come with Anthropic API key. You need to have your own Anthropic API key to use the Anthropic / Claude API integration feature. You can get your API key from Account Settings.

Does the license come with free updates?

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Yes, the license comes with free updates for 16x Prompt. You can download the latest version of the application from the download page .

Do you offer volume discounts for enterprises?

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Yes, we offer volume discounts for bulk purchases. For enterprise licenses, please contact us to discuss your requirements.

Do you offer white-label options for enterprises?

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Yes, we offer white-label options for enterprises. Please contact us to discuss your requirements.

How can I protect my company's intellectual property (IP) when using 16x Prompt?

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We take data privacy and security seriously. We do not store any of your data on our servers. All data is processed locally on your machine. You can check out our blog post AI Coding: Enterprise Adoption and Concerns for more information on how you can protect your company's IP when using AI tools.

Do you have a VAT number for EU users?

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No, 16x Prompt currently do not have a VAT number for users in the European Union. However, the invoices issued for team licenses will include a UEN number, which is a unique identifier for business entities in Singapore similar to VAT number.
API

Which models are supported when using API integration?

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16x Prompt currently supports frontier models (GPT-4o and Claude 3.5 Sonnet) from OpenAI and Anthropic. We also support Azure OpenAI API, OpenRouter API and any 3rd party API follows the OpenAI API format. You You need to have a valid OpenAI / Anthropic / Azure / OpenRouter API key to use these models via the API integration feature.

How do I use the API integration feature?

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Enter the valid API key in the settings page of the application (for OpenAI and Anthropic API keys), or the model selection page opened from the bottom right corner of the application (for other API keys). Select the model you want to use from the model selection page. Then you can compose your prompt and click on theSend button to send the prompt to the API and get the response.

I have ChatGPT Plus subscription, can I use API integration for free?

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No. ChatGPT Plus does NOT come with free OpenAI API access. You need to pay for the API usage separately. You can top up balance in the OpenAI billing page .

How do I use 16x Prompt with locally hosted Ollama?

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16x Prompt supports any services that offers OpenAI API compatibility, including Ollama. To connect to Ollama, refer to our Ollama Guide for more information.

I am not able to connect to OpenAI API. What should I do?

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1. You need a valid OpenAI API key to use the API integration feature. After getting a valid API key, you can enter it in the settings page of the application.
2. You also need to have some balance ($10 for example) in your OpenAI prepaid billing account to use certain models like GPT-4 and GPT-4o. You can top up balance in the OpenAI billing page .
API Troubleshooting

I am getting connection error when using API. What should I do?

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1. Check the logs from 16x Prompt to find the error message.
For macOS: ~/Library/Logs/16x Prompt/main.log
For Windows: %USERPROFILE%\AppData\Roaming\16x Prompt\logs\main.log
For Linux: ~/.config/16x Prompt/logs/main.log

2. If you see the 
unable to get local issuer certificate
error, chances are you are using a corporate self-signed certificate. You can set the environment variable 
NODE_TLS_REJECT_UNAUTHORIZED=0
when running the application to bypass the certificate check.
For example, on macOS, run 
NODE_TLS_REJECT_UNAUTHORIZED=0 open /Applications/16x\ Prompt.app
to open the application.

3. If you are behind a proxy or VPN, you can try to disable it and see if the connection works. You can also try to use a different network to see if the connection works.

If you are still facing issues, feel free to contact us.
Performance

I am not getting good results. What should I do?

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Use ChatGPT Classic instead of the default ChatGPT. ChatGPT Classic is better than ChatGPT for coding tasks. The Claude 3.5 Sonnet is a better model than GPT-4o for coding tasks.

Is ChatGPT Classic better than ChatGPT?

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ChatGPT Classic provides better responses as it has less noise in system prompt, leading to the model following instructions more closely, and give you more free context token to fit more input. It uses GPT-4 behind the scene and provides better results overall.

Is Claude 3.5 Sonnet better than GPT-4o?

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According to paul-gauthier, Claude 3.5 Sonnet beats GPT-4o on Aider's code editing benchmark.

I am still not getting good results. What should I do?

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You can check out the best practices for using ChatGPT for coding for tips and tricks on getting quality responses. Also check out the use cases and limitations of ChatGPT for coding. If you are still not satisfied with the results, feel free to contact us.
Installation

I am getting installation error DiscardVirtualMemory on Windows 8.

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You may encounter "The procedure entry point DiscardVirtualMemory could not be located in the dynamic link library" error on Windows 8. This is because the underlying framework for the app no longer supports Windows 8, in line with end of support for Windows 8 from Microsoft. You can try to upgrade to Windows 10 / Windows 11 or use a different machine with Windows 10 / Windows 11. If you are unable to upgrade, feel free to contact us for a refund.

How to install 16x Prompt on Ubuntu?

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You can either download the .deb file or the AppImage file from the download page. For .deb file, you can refer to the .deb installation guide for installation instructions. For AppImage file, you can refer to the AppImage guide for installation instructions.

16x Prompt is not opening on Windows or macOS. What should I do?

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You can try to clear the application data and restart the application. On Windows, go to %APPDATA% and delete the 16x Prompt folder. On macOS, go to ~/Library/Application Support and delete the 16x Prompt folder. If you are still facing issues, feel free to contact us.

16x Prompt is not opening on Linux with "The SUID sandbox helper binary was found, but is not configured correctly" error.

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This is due to a bug with Electron on Ubuntu 24 LTS. You can refer to this workaround which fixes the error by executing 
sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0
and disabling the kernel.apparmor_restrict_unprivileged_userns. If you are still facing issues, feel free to contact us.
Security

I am getting a warning from Windows Defender SmartScreen when installing.

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You can click on "More info" and then "Run anyway" to bypass the warning. This is a common issue with new applications that are not yet recognized by Windows Defender SmartScreen. And it costs extra money to get a code signing certificate in order to avoid this. Rest assured that 16x Prompt is safe to use. If you are still facing issues, feel free to contact us .
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16x Prompt - Streamlined ChatGPT for Coding | Product Hunt

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