About CalypsoAI
CalypsoAI is a Technology company based in San Francisco (United States) founded in 2018 by Neil Serebryany, and was acquired by F5 Networks in September 2025. CalypsoAI is focused on providing AI security solutions for applications and agents. It operates on a AI-as-a-Service model. CalypsoAI has raised $41 million across 3 funding rounds from investors including Lockheed Martin, Lightspeed Venture Partners and F5 Networks. The company has 9 employees. Its chief executive, as recorded, is Donnchadh Casey. Its website calypsoai.com draws about 18 thousand monthly visits. CalypsoAI offers products and services including Inference Platform, Inference Red-Team, Inference Defend, and Inference Observe. Its focus areas include Artificial Intelligence and AI Security. Its competitors include Veritone, Anyscale and Comet; 3 of its 3 listed competitors have raised funding.
Company details
CalypsoAI is engaged in delivering comprehensive AI security solutions for generative AI systems used in various applications and agents. The company operates within the technology sector, specializing in AI security through its Inference Platform, which includes tools for testing, defending, and observing AI interactions. Solutions offered by CalypsoAI address challenges across the AI lifecycle, from use case selection to production, ensuring real-time protection and compliance. Their platform is designed to be model and vendor agnostic, supporting seamless scaling and integration with existing systems.
- Headquarters San Francisco, United States
- Employees 9
- Founders Neil Serebryany
- Stage Acquired
- SectorsTechnology
- Website calypsoai.com
- Social LinkedIn X
- Acquired by F5 Networks (Sep 2025)
- Total Equity Funding$41M (USD)
in 3 rounds
- Latest Funding Round$5M (USD), Series A
Apr 2025
- InvestorsLockheed Martin
& 11 more
- Employee Count9
- Acquired byF5 Networks
(Sep 2025)
Products & Services of CalypsoAI
CalypsoAI offers a comprehensive portfolio of products and services, including Inference Platform, Inference Red-Team, Inference Defend, and Inference Observe.
AI security platform for testing and defending systems.
Proactive testing to identify and fix AI vulnerabilities.
Real-time adaptive security for evolving AI threats.
Centralized oversight for tracking all AI interactions.
Funding Insights of CalypsoAI
CalypsoAI has successfully raised a total of $41M across 3 strategic funding rounds. The most recent funding activity was a Series A round of $5 million completed in April 2025. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $41M
- Total Rounds 3
- Last Round Series A — $5M
- First Round $13M
(Jul 2020)
- Investors Count 11
All 3 funding rounds of CalypsoAI with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Apr 2025 | $5M | Series A | – | – | |
| Jun 2023 | $23M | Series A | – | Paladin Capital | |
| Jul 2020 | $13M | Series A | – | Paladin Capital |
12 investors in total: 11 institutional and 1 angel.
Investors in CalypsoAI
CalypsoAI has secured backing from 12 investors, including venture fund, angel, and institutional investors. Prominent investors backing the company include Lockheed Martin, Lightspeed Venture Partners and F5 Networks.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Crosspoint Capital is focused on cybersecurity and infrastructure software investments. | crosspointcapital.com | Menlo Park, USA | ||
Venture capital is invested in multiple sectors by Paladin Capital. | paladincapgroup.com | Washington, Dc, United States | ||
Investments are made in European deep tech security startups. | expeditionsfund.com | Warsaw, Poland | ||
Investment services are offered to professional clients by Hakluyt Capital. | hakluytcapital.com | London, United Kingdom | ||
| pallasadvisors.com | ||||
Early-stage ventures are targeted for investment by this VC fund. | mantaray.vc | London, United Kingdom | ||
Venture capital investing in innovative companies across global sectors is undertaken by Lightspeed Venture Partners. | 1997 | lsvp.com | Menlo Park, United States | |
Venture capital firm focused on B2B companies | frontline.vc | Dublin, Ireland | ||
Venture capital firm investing in technology, life sciences, and related sectors. | 8vc.com | |||
Manufacturer of global security and defense airplanes | 1912 | lockheedmartin.com | United States |
Investor details for CalypsoAI
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People of CalypsoAI
19 people are tracked at CalypsoAI (8 in leadership, 9 in board & advisors, 2 in team); the tracked headcount is 9.
| Name | Role | Group |
|---|---|---|
Neil Serebryany | Founder | Leadership |
Donnchadh Casey | Chief Executive Officer | Leadership |
Ted Nitka | Vice President, Global Partnerships And Alliances | Leadership |
Nick Jovanovic | VP, Government | Leadership |
David Spirk | Special Advisor to CEO | Leadership |
Yash Tulsani | CFO | Leadership |
Kate Urban | Head Of Legal | Leadership |
Conor Walley | Head Of Sales | Leadership |
Robert Eisiminger | Advisor | Board & advisors |
David Dreier | Advisor | Board & advisors |
Davey Gibian | Advisor | Board & advisors |
Kari Bingen | Advisor | Board & advisors |
Michael Molino | Advisor | Board & advisors |
Ali Golshan | Advisor | Board & advisors |
Tim Richardson | Advisor | Board & advisors |
Jacqueline Tame | Strategic Advisor | Board & advisors |
Tony Demartino | Advisor | Board & advisors |
Ben Duggan | Associate Account Executive | Team |
Bobby Patrick | Advisor | Team |
Complete people profiles for CalypsoAI
Full employee and board profiles, team structure, tenure and professional contact details require an active premium plan.
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Timeline of CalypsoAI
4 dated milestones of CalypsoAI across 7 years, from founding to its latest funding, stage changes and deals.
- Founded CalypsoAI is founded.
- Funding First funding round of $13.0M.
- Funding Latest funding round, Series A, of $5.0M.
- Exit Acquired by F5 Networks.
Competitors of CalypsoAI
CalypsoAI has 3 listed competitors in our database, 3 of them funded. They include Veritone, Anyscale and Comet.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| veritone.com | 2014 | Irvine, United States | $15M | 487 | AI-driven analytics for audio and video content are provided. | |
| anyscale.com | 2019 | San Francisco, United States | $280.53M | 118 | Provider of an AI-based open source framework for building distributed applications | |
| comet.com | 2017 | New York, United States | $63.02M | AI and SaaS-based ML solutions |
Detailed competitors of CalypsoAI
The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.
- Full competitor set
- Operating metrics
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Web traffic of CalypsoAI
The website of CalypsoAI (calypsoai.com) receives about 17.8K visits a month.
- Monthly visits17.8K
▲ 36% vs previous month
Websites whose visitors overlap most with CalypsoAI. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
| asksage.ai | 100% | 45.5K | #662,831 | View details | |
| google.com | 83% | 85.8B | #1 | View details | |
| linkedin.com | 82% | 1.9B | #18 | View details |
Top companies in AI Core Platforms & Infrastructure
3 companies that operate in the same segment as CalypsoAI (AI Core Platforms & Infrastructure) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
OpenAI is engaged in developing advanced artificial intelligence technologies. | 2015 | San Francisco, California, United States | USD 58.07 B | 11,115 | ||
AI-powered graphical processing units and SoCs | 1993 | Santa Clara, California, United States | USD 5 M | USD 130.5 B | 42,000 | |
AI models and chatbots are offered for industry applications. | 2021 | San Francisco, California, United States | USD 136.81 B | 6,146 |
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Related news about Calypsoai
Complete news archive for CalypsoAI
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Frequently Asked Questions about CalypsoAI
CalypsoAI was founded in 2018 and raised its 1st funding round 2 years after it was founded.
CalypsoAI is headquartered in San Francisco, United States. It is registered at San Francisco, California, United States.
Donnchadh Casey is the CEO of CalypsoAI, as recorded in our data.
CalypsoAI is a funded company, having raised a total of $41M across 3 funding rounds to date. The company's 1st funding round was a Series A of $13M, raised on Jul 2020.
CalypsoAI has 9 employees.
CalypsoAI is engaged in delivering comprehensive AI security solutions for generative AI systems used in various applications and agents. The company operates within the technology sector, specializing in AI security through its Inference Platform, which includes tools for testing, defending, and observing AI interactions. Solutions offered by CalypsoAI address challenges across the AI lifecycle, from use case selection to production, ensuring real-time protection and compliance. Their platform is designed to be model and vendor agnostic, supporting seamless scaling and integration with existing systems.
CalypsoAI offers Inference Platform, Inference Red-Team, Inference Defend, and Inference Observe.
CalypsoAI has 12 investors. Key investors include Lockheed Martin, Lightspeed Venture Partners, F5 Networks, Crosspoint Capital, and Paladin Capital.
Yes. CalypsoAI was acquired by F5 Networks in September 2025.