Midswirl

An AI-first desktop PDF reader

Free to try:

No credit card required

Want help or got feedback?

Chat with a single PDF or multiple PDFs. Answers include page references to your PDFs.

Conveniently chat with PDFs on your computer. We're bringing AI into your existing workflow.

SaaS offerings for all use cases. Or bring your own OpenAI API key (BYOK).

Free

Explore how AI can help you read and understand your documents.

Chat with a single or multiple PDFs
Midswirl AI models: OpenAI's GPT-4.1 nano
25 Midswirl AI credits per month
Example usage: approximately 150 pages of AI indexing with 75K words of chat context and 9K words of chat output using GPT-4.1 nano
Bring your own OpenAI API key: All models, with no usage limits
Individual use only

Core

Your daily AI-powered PDF reader, with access to all of OpenAI's GPT-4.1 models.

Chat with a single or multiple PDFs
Midswirl AI models: OpenAI's GPT-4.1, GPT-4.1 nano and GPT-4.1 mini
5,000 Midswirl AI credits per month
Example usage: approximately 30K pages of AI indexing with 750K words of chat context and 93K words of chat output using GPT-4.1
Bring your own OpenAI API key: All models, with no usage limits

Plus

The best of Midswirl, including OpenAI's reasoning model o4-mini.

Chat with a single or multiple PDFs
Midswirl AI models: All of OpenAI's GPT-4.1 models plus the reasoning model o4-mini
10,000 Midswirl AI credits per month
Example usage: approximately 60K pages of AI indexing with 1.5M words of chat context and 187K words of chat output using GPT-4.1
Bring your own OpenAI API key: All models, with no usage limits

Made by David Wu (@bydavidwu) in Melbourne, Australia.