Costream YC Application
Costream went through Y Combinator in the Summer 2025 batch as a Consumer company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.
- YC batch
- Summer 2025
- Industry
- Consumer
- Team size
- 2
- Status
- Active
- Launched
- 2025
Founders
Aditya MahnaFounder
Ayush MahnaCo-Founder
Costream's YC application, reconstructed
Y Combinator application
Costream, Summer 2025 batch. The real form questions, answered from public data.
- Founders2
- Company7
- Progress7
- Idea4
- Equity3
- Curious2
- Batch Preference1
Company
Costream
Indexing human dialogue through digital products
We are building a platform that indexes and structures human conversations across digital channels. The product captures dialogue context, organizes it for search and analysis, and integrates with tools teams use daily. Our goal is to make dialogue, the core of human interaction, easily accessible and actionable in digital workflows.
We live and work in San Francisco, CA, and plan to keep Costream based here after YC.
We chose San Francisco because it keeps us close to the pulse of technology innovation and potential customers in the consumer internet space. This location also allows us to tap into local talent and investor networks.
21 more answers in the full application
Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.
Frequently Asked Questions
Is this the real Costream YC application?
No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from Costream's public data (launch notes, founder backgrounds, product description). It shows how a company like Costream would present itself to YC, not the text they submitted.
What YC batch was Costream in?
Costream was part of the Y Combinator Summer 2025 batch.
Who founded Costream?
Costream was founded by Aditya Mahna, Ayush Mahna.
What does Costream do?
Indexing human dialogue through digital products
How do I read the full reconstructed application?
Create a free Round Funded account. The full 26-answer version of Costream's application, and every other YC batch, is in YC Insights.
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