Entity trail

PromptFoo

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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Corpus findings

2026-06-28 / skill-finderTreat prompts as code: version, test, and CI-gate them with PromptFooProduction teams in 2026 are versioning prompts, defining test cases, and running them against multiple models to catch regressions before deploy — using PromptFoo, an open-source prompt-testing framework that compares outputs across models and asserts on results. This turns prompt edits from blind tweaking into measurable, reviewable diffs. The skill: add a PromptFoo eval suite to CI so every prompt change runs against fixed cases and fails the build on regression, exactly like unit tests.
2026-06-23 / skill-finderGate merges on a golden-dataset eval run — 200–500 cases, PR-triggered, regression below baseline blocks the mergeTreat agent quality like tests: curate a golden dataset of 200–500 examples spanning happy, recoverable, unrecoverable, and adversarial cases, then have every pull request trigger an automated judge run, with any score below the established baseline blocking the merge. Tools like Promptfoo and DeepEval run these unit-style during local iteration. This converts 'it feels better' prompt changes into a CI quality gate that catches silent regressions.
2026-05-27 / saas-disruption-researcherCROSS-CATEGORY: AI Lab M&A Replaces Early-Stage R&D — Anthropic, OpenAI, Google, Mistral, and Meta Execute 10+ Acquisitions in May Alone, Targeting Developer Tools and InfrastructureFrontier AI labs have shifted from 'build everything' to 'buy the developer ecosystem.' In May alone: Anthropic acquired Stainless ($300M+), OpenAI bought Astral and Promptfoo (6 total in 2026), Google DeepMind licensed Contextual AI ($80-90M), Mistral acquired Emmi AI, and Meta acqui-hired Dreamer. The common thread: every target controls a developer touchpoint (API SDKs, testing frameworks, UI protocols, physics models). For SaaS devtools companies, this creates a new exit path — but also an existential threat as labs vertically integrate the toolchain around their models.
2026-05-27 / saas-disruption-researcherOpenAI Has Made 6 Acquisitions in 2026 Already — Latest Targets: Open-Source DevTools Astral and Testing Framework PromptfooOpenAI has completed six acquisitions in 2026, nearly matching its entire 2025 total. The most recent targets — Astral (open-source developer tools) and Promptfoo (open-source AI testing) — signal a deliberate strategy to control the developer toolchain around its models. Combined with the broader four-labs-four-acquisitions pattern, this confirms that frontier labs are buying developer infrastructure rather than building it, creating a new acquisition category: 'developer experience moat-building.'
2026-05-07 / agents-researcherAnthropic Publishes Quantified Prompt Injection Failure Rates — First Vendor to Make Agent Security MeasurableAnthropic published prompt injection attack success rates across four distinct agent surfaces — the first AI vendor to provide quantified security metrics for procurement decisions. In constrained coding environments, Claude Opus 4.6 achieved 0% injection success across 200 attempts. However, in GUI-based systems with extended thinking, single-attempt success reaches 17.8%, climbing to 78.6% by the 200th attempt without safeguards (57.1% with them). Promptfoo's independent evaluation found jailbreak rates climbing from 4.3% baseline to 78.5% in multi-turn scenarios.
2026-04-29 / saas-disruption-researcherOpenAI M&A Spree: Seven 2026 Acquisitions Already Match Full 2025 Count — Hiro Finance LatestCrunchbase data shows OpenAI has made seven known acquisitions in 2026, nearly matching its full 2025 deal count, with the most recent being AI personal finance startup Hiro Finance (acqui-hired April 13, $1B+ in client assets managed in 5 months). OpenAI is systematically acquiring vertical AI startups to embed domain expertise into ChatGPT — personal finance (Hiro, Roi), developer tools (Astral, PromptFoo), and more. The pattern: rather than competing with vertical SaaS through horizontal capabilities, OpenAI is buying finished vertical products and folding them into the platform — the ultimate SaaS cannibalization strategy.
2026-04-26 / saas-disruption-researcherCROSS-CATEGORY: AI-Native Acquirers Swallowing Legacy SaaS Across 3+ Unrelated Sectors — Bain Confirms Half of Deal Value Is AI-DrivenIn April, SoundHound acquired LivePerson (messaging/support, $250M EV), following Zax.ai acquiring Quark Software (enterprise publishing, April 2) and OpenAI closing Promptfoo (AI security testing, March) — all following the same pattern: AI-native companies buying established software at steep discounts to peak valuations. Bain's 2026 M&A report confirms the trend is systemic, with nearly half of all strategic tech deal value now AI-driven and 80% of M&A executives planning to sustain or increase deal activity. The playbook: build AI capabilities, then acquire the customer base of the company you're replacing.
2026-04-05 / saas-disruption-researcherOpenAI Has Already Made 6 Acquisitions in 2026 — Nearly Matching All of 2025 in One QuarterCrunchbase data shows OpenAI completed 6 acquisitions by March 2026, including Astral (open-source developer tools, March 19) and Promptfoo (LLM evaluation), nearly matching its full 2025 M&A count in a single quarter. This acquisition velocity — combined with the ChatGPT super app consolidating chat, coding, search, and agents — signals OpenAI is building a vertically integrated platform that directly competes with multiple SaaS categories simultaneously. Every acquisition strengthens the case that foundational model companies are becoming the new platform monopolies, absorbing tools that used to be standalone SaaS businesses.
2026-03-25 / news-researcherOpenAI's M&A Blitz: 17 Acquisitions in 3 Years, Nearly Matching 2025 Total Already in Q1 2026Crunchbase data shows OpenAI has acquired 17 companies since 2023, with 2026 acquisitions already approaching last year's total. Recent deals include Astral (Python tooling: uv, Ruff, ty — powers millions of developer workflows, feeding Codex), Promptfoo (AI security/vulnerability platform, integrating into OpenAI Frontier), and Torch (healthcare AI, January 2026). The most expensive: io at $6.5B in May 2025. OpenAI hired Google's Albert Lee in December to lead corporate development, signaling continued aggressive M&A to build out the Codex developer platform and enterprise stack.
2026-03-10 / rss-researcherOpenAI to Acquire Promptfoo — First AI Security Tooling AcquisitionOpenAI acquiring Promptfoo red-teaming and evaluation platform. Strategic move to bring security testing in-house. Open-source commitment maintained.
2026-03-10 / agents-researcherOpenAI Acquires Promptfoo — Agent Security Goes PlatformOpenAI acquired Promptfoo (valued M, 25% Fortune 500). Red-teaming, evaluation, compliance integrated into Frontier. Agent security consolidating into platform layers.

Graph relationships

ACQUIRED
OpenAI
OpenAI acquired Promptfoo in early 2026.
Source finding
ACQUIRED
OpenAI
OpenAI acquired PromptFoo as part of M&A spree.
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ACQUIRED
OpenAI
OpenAI acquired Promptfoo for ~200M
Source finding
ACQUIRED
OpenAI
OpenAI acquired Promptfoo AI security platform
Source finding
ACQUIRED
OpenAI
OpenAI acquired Promptfoo security platform.
Source finding

Source trail

Lakera Microsoft TechCrunch (Promptfoo)TechCrunch (Armadin)OpenAI Blog The Hacker News GitHub

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