Eliminate risk with AI red-teaming and evals used by 25,000 developers. Find and fix vulnerabilities, maximize output quality, catch regressions.
Total raised: $28.4M
Investors 1
| Date | Name | Website |
| 27.07.2025 | 515 Ventur... | 515venture... |
Funding Rounds 2
| Date | Series | Amount | Investors |
| 09.03.2026 | Series A | $23.4M | a16z |
| 24.07.2024 | Seed | $5M | - |
Mentions in press and media 17
| Date | Title | Description |
| 18.08.2026 | 85% of companies burned by an AI mistake are racing to cut the humans who might catch the next one | Enterprises that already got burned by an AI agent passing its evals and then failing in production are moving faster toward removing humans from deployment decisions, not slower — even as trust in automated evaluation is rising across the ... |
| 16.07.2026 | The agent evaluation gap: Enterprise AI organizations have a reality-alignment problem, not a coverage problem — and most are shipping to production anyway | Across 157 enterprises, organizations are granting AI agents more autonomy while trusting the evaluations meant to gate that autonomy less. Half have already shipped an agent that passed their internal evaluations and then failed a customer... |
| 11.06.2026 | OpenAI Buys German AI Startup Ona to Strenghten Codex | Following the sale of Emmi AI to Mistral, the next major AI exit from the Speedinvest portfolio comes just weeks later: Ona is being acquired by OpenAI. The company officially announced the deal on Thursday, after Bloomberg first reported i... |
| 11.03.2026 | OpenAI Secures AI Frontier with Promptfoo Acquisition | OpenAI acquires Promptfoo. The strategic deal fortifies AI agent security. Promptfoo's specialized tools integrate into OpenAI's enterprise Frontier platform. This enables robust red-teaming and comprehensive vulnerability testing. The acqu... |
| 09.03.2026 | OpenAI покупает Promptfoo: стартап, который ломает ИИ-приложения | OpenAI объявила о покупке Promptfoo — платформы для тестирования безопасности ИИ-систем, которой пользуются более 25% компаний из Fortune 500. Инструменты стартапа будут интегрированы в OpenAI Frontier — корпоративную платформу для создания... |
| 09.03.2026 | OpenAI to buy cybersecurity startup Promptfoo to better safeguard AI agents | OpenAI is acquiring cybersecurity startup Promptfoo. Promptfoo’s team will join Sam Altman-led OpenAI, and its technology will be integrated into the Frontier platform for AI agents. Promptfoo announced a Series A financing round in July th... |
| 12.02.2026 | Anthropic published the prompt injection failure rates that enterprise security teams have been asking every vendor for | Run a prompt injection attack against Claude Opus 4.6 in a constrained coding environment, and it fails every time, 0% success rate across 200 attempts, no safeguards needed. Move that same attack to a GUI-based system with extended thinkin... |
| 20.01.2026 | Сканеры ML-моделей: разбор инструментов и некоторых методов обхода их проверок | Содержание О каких сканерах идет речь Форматы хранения моделей машинного обучения Подробнее про Pickle Сканеры моделей picklescan modelscan fickling ModelAudit Способы обхода сканеров Обход проверок через использование функций «оберток» Исп... |
| 29.07.2025 | Promptfoo raises $18.4M to build AI security and evaluation platform Join theCUBE Alumni Trust Network Send us a News Tip EXTRACT THE SIGNAL FROM THE NOISE Cookies | Promptfoo Inc., a broadly adopted open-source framework for artificial intelligence evaluation and testing, today announced it has raised $18.4 million in an early-stage funding led by global software investor Insight Partners. The company’... |
| 29.07.2025 | Promptfoo Raises $18.4M in Series A Funding | Promptfoo, a San Francisco, CA-based provider of an open‑source framework for AI red‑teaming and security testing, raised $18.4M in Series A funding. Th around was led by global software investor Insight Partners, with participation from ex... |
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