What platforms does DevPrompt support?

DevPrompt is available on Web App.

What are the limitations of DevPrompt?

No useful functionality without your own API key, so the tool is not self-contained. The homepage gives no concrete pricing tiers, limits or model list beyond a GPT-4o example. Comprehension depends on working knowledge of prompt structure and model APIs.

DevPrompt

Name: DevPrompt
Author: DevPrompt

Build, run and compare prompts across multiple models from one workspace

Intermediate API

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Screenshot of DevPrompt, Build, run and compare prompts across multiple models from one workspace

What is DevPrompt?

DevPrompt is a developer tool that builds run and compare prompts across multiple models from one workspace. A prompt workspace that lets you assemble prompts from typed sections, generate prompts with AI help, and run the same input across several AI models at once using your own API keys.

DevPrompt is a prompt workspace for developers and creators who want to stop rewriting the same instructions every time they open a chat window. The product puts the most popular AI models in one place, lets several of them run against the same prompt at once, and gives you a structured canvas for assembling prompts out of reusable sections rather than one long text box. The homepage emphasises three ideas: no repetition, no fees, and control through your own API keys. The core mechanic is the prompt builder. Instead of typing freeform, you stack sections and assign each one a type: text, list, data, code, image or files. You can add new sections or drop a file straight in, and an AI assist option will generate or extend the prompt for you. Instructions sit in their own layer, so the same scaffolding can be reused across tasks. Projects group your work, and a left rail keeps chat history and the current conversation within reach. Running is where the multi-model angle matters. DevPrompt lets you run more than one model simultaneously and inspect the outputs side by side, which is useful when you are choosing between GPT-4o and another assistant for a coding task or a structured data extraction. Chat snippets give you repeatable fragments to drop into conversations, and an assistant picker shows what is available in your session. A tour walks new users through the interface on first landing. Access is tied to your own credentials. The product asks you to enter an API key for any model, with an OpenAI key called out as the starting point, then points you to settings to add it. That model keeps the tool cheap to operate and puts billing directly in your hands, but it also means DevPrompt is not a plug-and-play chatbot. It is closest to prompt management and multi-model comparison tools, and it suits people who already pay for model access and want a better front end for it.

How do you use DevPrompt?

1Open the app and take the guided tour
Landing on the site shows a welcome panel with a tour option. The tour walks through the main areas of the workspace, including the prompt builder, the sidebar and the run controls.
2Add your model API key in settings
DevPrompt asks for an API key before anything can run, with an OpenAI key named as the entry point. Open settings from the prompt on screen and paste the key for the model you plan to use.
3Create a project and start a new chat
Pick or create a project from the selector, then open a new chat. Projects keep related conversations and prompt work grouped instead of scattered across a flat history.
4Build the prompt from sections
Add a section and choose its type: text, list, data, code, image or files. You can drop a file into the prompt area or add further sections, with instructions kept in a separate layer.
5Let AI expand the prompt
Use the generate option to have AI produce or extend the prompt from what you have written so far. This is the quickest route when a task needs detailed framing you would rather not type out.
6Run several models and compare outputs
Select the assistants you want and run the prompt across more than one model at a time. Review the outputs side by side, then reuse any fragment you like as a chat snippet later.

Pros and cons

Pros

Prompts are built from typed sections (text, list, data, code, image, files) rather than a single blank boxAI
Runs multiple models simultaneously so outputs can be compared on the same promptAI
AI-assisted prompt generation lowers the effort of writing elaborate instructionsAI
Bring-your-own-API-key model gives direct control over which models you use and what you payAI
Chat snippets and projects keep reusable fragments and past work organisedAI

Cons

No useful functionality without your own API key, so the tool is not self-containedAI
The homepage gives no concrete pricing tiers, limits or model list beyond a GPT-4o exampleAI
Comprehension depends on working knowledge of prompt structure and model APIsAI
Documentation and support channels are not described anywhere on the landing pageAI

How much does DevPrompt cost?

Pricing

The homepage states that there are no fees and invites users to explore for free. Usage is tied to your own API keys, so model costs are billed by the provider you connect rather than by DevPrompt. No paid tiers or limits are described.

Learn more

Integrations

Connections are made through your own API keys rather than built-in accounts. OpenAI is the example given on the homepage, and the interface refers to entering a key for any model.

Features

Typed prompt sections (text, list, data, code, image, files), AI prompt generation, an instructions layer, multiple outputs from several models run at once, chat snippets, project grouping, an assistant picker, drag and drop file input, and bring-your-own API key support for any model.

Frequently asked questions about DevPrompt

How much does DevPrompt cost?
The homepage states that there are no fees and invites users to explore for free. Usage is tied to your own API keys, so model costs are billed by the provider you connect rather than by DevPrompt. No paid tiers or limits are described.
Does DevPrompt have an API?
Yes, DevPrompt offers an API.
How do you use DevPrompt?
The walkthrough on this page covers 6 steps: 1. Open the app and take the guided tour 2. Add your model API key in settings 3. Create a project and start a new chat 4. Build the prompt from sections 5. Let AI expand the prompt 6. Run several models and compare outputs.
What platforms does DevPrompt support?
DevPrompt is available on Web App.
What does DevPrompt integrate with?
Connections are made through your own API keys rather than built-in accounts. OpenAI is the example given on the homepage, and the interface refers to entering a key for any model.
What are the limitations of DevPrompt?
No useful functionality without your own API key, so the tool is not self-contained. The homepage gives no concrete pricing tiers, limits or model list beyond a GPT-4o example. Comprehension depends on working knowledge of prompt structure and model APIs.