Together AI runs one of the most widely used platforms for building and running open AI models. When the security team went looking for a security awareness platform that could keep pace, they chose Cimento, and the relationship has since grown into a broader partnership on securing AI itself.

The Challenge

Together AI carries a heavy compliance load, running SOC 2 and ISO programs in parallel. Evidence collection was overwhelmingly manual. In a single week during audit season, the GRC Manager opened hundreds of tickets to gather evidence, touching each one by hand because the existing tools could not export cleanly.

The training tooling created friction of its own. The team could not adjust assignment dates for individual situations, such as visa delays or rehires, and the HR system was adding people to the identity provider before their actual start dates, resulting in false enrollments and noise in completions.

What Together AI Needed

• A modern, highly configurable platform that could handle real-world onboarding edge cases without creating false records

• Content that could be generated and rebranded to Together AI’s own look, not generic stock training

• Reporting the team could actually trust enough to retire the manual spreadsheet

• A way to stand up recurring and annual campaigns quickly across nearly 400 employees for training and phishing simulations

The Solution

Together AI runs security awareness training across its full employee base on Cimento. New hires are enrolled in weekly cohorts using Groups, and Slack notifications keep training visible without chasing people over email.

Content That Looks Like Together AI

With Cimento’s AI Content Hub, the team can generate training and rebrand it in Together AI’s own colors and logo, so security awareness feels like it comes from the company rather than from a stock vendor. Conversational campaign creation lets the team spin up annual and recurring campaigns by describing what they want rather than assembling everything by hand.

Handling the Edge Cases

The onboarding edge cases that broke the old tool, from start-date mismatches to rehires, are handled inside Cimento, which cuts down the false enrollments that used to pollute reporting.

Key Results

• Security awareness training consolidated on Cimento across nearly 400 employees

• New-hire onboarding automated through weekly group-based cohorts

• Training content generated and rebranded to Together AI’s own branding

• Onboarding edge cases handled in-platform, reducing false enrollments

• Relationship expanded from customer to design partner on AI agent security

Why Cimento

Together AI chose Cimento for configurability, for AI-generated content the team could create itself, and for a partnership that moves at the same speed as the company. When asked to consolidate onto a different internal tool, the GRC lead chose to stay with Cimento.

“Standing up a campaign went from a manual process with multiple steps to something that can be done within minutes.”

Lisa Ruggiero, Security and GRC at Together AI

Features Used

• AI content generation and brand customization

• Group-based new-hire cohorts and onboarding automation

• Conversational campaign creation for recurring and annual programs

• Slack notifications

• Completion reporting

Beyond Training

From Training and Simulations to a One-Stop Shop for Human Risk Management

Together AI’s work with Cimento did not stop at security awareness. As AI agents took on real work across the company, the security team ran into a problem. Traditional tooling was not built to address it: the team could not reliably tell which agents were operating, which employees were behind them, or what those agents could access. Derek, who leads infrastructure and agent security at Together AI, brought that problem to Cimento, asking them to solve it as their end-all, be-all vendor for Human Risk Management.

“The attack surface is not static anymore. We do not have full visibility into everything the agents are doing.”

Derek Chamarro, Head of Security at Together AI

Cimento’s Agent Hub gives security leaders a live view of agent activity and composite risk scoring that ties each agent’s behavior back to a responsible human owner. The simulation work extends Cimento’s multi-turn, multi-channel attack testing into agent-driven scenarios, pressure-testing how autonomous systems respond to social engineering and manipulation rather than only testing the people around them.

About Together AI

Together AI is the AI-native cloud for open-source models, giving teams a single platform to run inference, fine-tune, and train across 200-plus leading open models. Founded in 2022 by Vipul Ved Prakash, Ce Zhang, Chris Ré, and Percy Liang, the company pairs high-performance GPU infrastructure with an OpenAI-compatible API, and its research team has contributed widely adopted advances in open AI. Together AI is one of the fastest-growing companies in the open-source AI ecosystem. The company has raised roughly $1.3 billion in funding, most recently an $800 million Series C in July 2026 led by Aramco Ventures at an $8.3 billion valuation, following a $305 million Series B led by General Catalyst in 2025 and a $102.5 million Series A led by Kleiner Perkins.