Mathilde Collin
Angel Investor @ Y Combinator
San Francisco, United States
Mathilde Collin is a seed investor at Y Combinator in San Francisco focused on Software and Artificial Intelligence. Mathilde Collin is the co-founder and CEO of Front.
- Total investments:
- 53
- Last investment:
- Lead investor:
- 2%
Last updated:
For AI agents: llms.txt
Industries Mathilde Collin invests in
Stages Mathilde Collin invests in
Countries Mathilde Collin invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $2.4M–$12M
- Series A
- $8M–$30M
- Series B
- $30M–$120M
Investment Focus
Industry
- Software 24 (45%)
- Artificial Intelligence 16 (30%)
- SaaS 11 (21%)
- Information Technology 10 (19%)
- Developer Tools 6 (11%)
Stage
- Seed 27 (51%)
- Series A 14 (26%)
- Series B 6 (11%)
- Pre-Seed 4 (8%)
- Angel 1 (2%)
Country
- United States 42 (79%)
- France 5 (9%)
- Switzerland 1 (2%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Keeper makes software to help bookkeepers manage their clients' back-office. | $6.5M / Series A / Dec 11, 2025 | ||
| Vybe is a software company that provides pre-built integrations and AI tools for users to develop and launch internal AI-powered apps. | $10M / Seed / Dec 10, 2025 | ||
| Multifactor provides secure identity management with authentication, authorization, and auditing using strong cryptography. It provides a secure account-management and access-sharing platform designed for both humans and AI agents. The service functions as a “vault” for passwords, passkeys, 2FA codes, and other authentication materials, enablingusers to store all their login credentials in one secure place. | $15M / Seed / Dec 04, 2025 | ||
| Beside is an app that provides users with a dedicated second phone number for calls and texts. It includes AI-driven voicemail transcription, call summaries, and actionable to-dos for conversations. It also supports integration with tools like CRM systems and automation platforms to sync call data and notes. | $20M / Series A / Oct 29, 2025 | ||
| Create offers a platform that converts plain-language descriptions into fully functional websites, mobile apps, internal tools, and full-stack applications. The platform generates UI components, page structures, integrations, backend logic, and databases from conversational prompts. It supports a wide array of integrations, including AI models likeGPT-4o, Claude 3.5 Sonnet, Stable Diffusion, payments, APIs, and custom REST endpoints, and allows users to preview, iterate, deploy, and export code in one flow. | Series A / Aug 14, 2025 | ||
| Create offers a platform that converts plain-language descriptions into fully functional websites, mobile apps, internal tools, and full-stack applications. The platform generates UI components, page structures, integrations, backend logic, and databases from conversational prompts. It supports a wide array of integrations, including AI models likeGPT-4o, Claude 3.5 Sonnet, Stable Diffusion, payments, APIs, and custom REST endpoints, and allows users to preview, iterate, deploy, and export code in one flow. | $5.5M / Seed / Aug 14, 2025 | ||
| ZeroEntropy provides a sophisticated search API tailored for the analysis and retrieval of unstructured data. | $4.2M / Seed / Jul 09, 2025 | ||
| Eden Robotics is a robotics company building autonomous robots for industrial and commercial work.First deployments target manufacturing and logistics, where the labor demand is largest and the environments are structured enough to deploy robots responsibly. Eden's mission is to advance the transition to autonomous infrastructure andservices for humanity.Eden Robotics was founded in 2025 by Stamatis Floratos (CEO) and Dr. Joey Humphreys (CTO). Headquartered in London. Backed by Y Combinator. | $550K / Pre-Seed / Feb 14, 2025 | ||
| Wordware allows users to create and host their entire LLM stack for AI application development. It offers tools for building, training, and deploying language models. The platform simplifies the integration of various components necessary for AI solutions. Users can manage their applications and data within a unified environment. | $30M / Seed / Nov 21, 2024 | ||
| Twenty builds the modern salesforce, powered by the open source community. | $5M / Seed / Nov 19, 2024 | ||
| See all 53 investments → | |||
Co-Investors
About Y Combinator
Y Combinator is a startup accelerator that provides funding and mentorship to early-stage companies. It offers a program where startups receive guidance from experienced entrepreneurs and investors. The organization helps founders in their business models and develop their products. Y Combinator serves industries such as technology, healthcare, andfinance.
Y Combinator Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Boris Jabes
Visiting Partner
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Luther Lowe
Head of Public Policy
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Max Kolysh
Visiting Partner
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Brad Flora
Group Partner
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Calvin French-Owen
Visiting Group Partner
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FAQ
What does Mathilde Collin invest in?
Mathilde Collin invests primarily in Software, Artificial Intelligence and SaaS startups, most often at Seed and Series A stage. Most of the 53 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Mathilde Collin's check size?
Mathilde Collin typically joins rounds of $2.4M–$12M at Seed, $8M–$30M at Series A and $30M–$120M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Mathilde Collin participates in.
How do I contact Mathilde Collin?
Public channels for Mathilde Collin include LinkedIn, X (Twitter) and Facebook. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Mathilde Collin last invest?
The most recent investment recorded for Mathilde Collin closed in Dec 2025. Shizune tracks 53 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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