Takumi, the AI Security Engineer | GMO Flatt Security Inc. has loaded

The AI Security Engineer

Takumi is an AI agent built to support human product engineers and security engineers. It identifies and fixes vulnerabilities, triages findings, and assists with secure design — all within your Slack workspace. Bring Takumi onboard and focus on what matters most.

Join the Waitlist

Launching on April 7th. Early signups get priority access.

Takumi has already contributed to
secure 10+ zero-day vulnerabilities.

CVE-2025-29768

potential data loss with zip.vim and special crafted zip files

Born to Find Vulnerabilities At Scale

Logical Vulnerabilities Demistified

Takumi uncovers vulnerabilities your SAST tools miss.
Powered by the latest AI models (like Claude Sonnet), it understands both business logic and code semantics.

Our internal research using real customer applications has identified logical bugs, including improper access controls.

OWASP Top 10

Covered via white box testing

Spec Review

with Markdown/PDF docs

Leave it to Takumi. That's why you scale.

No need for detailed prompts or back-and-forth. Web searches, deep code analysis, report summaries — it all happens automatically on Takumi’s side. That’s what makes it an AI agent.

20-60 minutes

Per Typical Security Review

Approx. $1-$10

Per Typical Security Review

RESEARCH ACHIEVEMENTS

Over 10 Zero-Days Discovered
in Just One Week

In our internal research preview, three human researchers — with Takumi as their assistant — discovered over 10 zero-day vulnerabilities in just one week.

Background Story

Takumi Cloned Our Human Researchers with 100+ Public CVEs.

Our team has improved global software security by reporting vulnerabilities in widely used applications. These real-world experiences helped shape Takumi into a practical, production-ready cybersecurity AI agent.

Visit Our Research Blog

Built to Collaborate With Teams.

Takumi meets you where you are — and works with what you use.

It integrates into your daily workflow, pulling in context, chatting with you, and helping where it matters. 

Early access will roll out with Slack and GitHub integrations first, with more to follow.

Takumi keeps an eye out, so you don’t have to.

From detecting new risks to performing detailed reviews, it works like a tireless security partner.

PRICING

Choose a plan that's right for you

For OSS Projects

OSS

We’re committed to supporting OSS maintainers, as we’ve always done.

Free

Some in Team, plus:

Usage

Unlimited seats

Monthly ACUs

Additional Condition

Takumi Badge in README.md

Evaluation based on your project docs

We can only support a limited number of projects. Priority will be given to those with supply chain security impact.

Apply Your OSS

For Teams

Team

Like hiring an awesome teammate with security expertise.

$500

/ month

Includes:

Core capabilities of Takumi:

Talk in your Slack workspace

Code review via GitHub App

Learns over time (Knowledge)

Usage

Unlimited seats

Monthly ACUs

Join the Waitlist

For More Powerful Teams

Enterprise

Like hiring a more scalable and trusted team — not just one engineer.

Custom pricing

Everything in Team, plus:

Extended capabilities of Takumi:

Priority for newer AI models

More tool integration for Takumi

Security & support

More audit logs

Dedicated account team

Custom terms (if necessary)

Join the Waitlist

USE CASES

What you can ask Takumi to do

Finding Logical Bugs

Detect vulnerabilities caused by complex specifications, such as broken authorization.

Reacting to Threat Information

Quickly assess whether trending security threats in the news affect your systems.

Triaging Dependabot PRs

Analyze how CVEs or known vulnerabilities affect your codebase and determine if dependency updates are needed.

Auditing OSS Packages

Evaluate open-source software to determine if it's safe to adopt.

Terraform Code Review

Takumi reviews not only application code, but also infrastructure configuration code.

Security Design Review

Support architectural security reviews and address non-functional security requirements.

You're the human manager — unlock even more power.

Join the Waitlist

Launching on April 7th. Early signups get priority access.

FAQs

Let's start by talking with Takumi.

Rolling out from April 7th. Early signups will receive priority.

GMO Flatt Security Inc.
6F, Cerulean Tower, Sakuragaoka-cho, Shibuya-ku, Tokyo, Japan

© GMO Flatt Security