What are the most valued startups in the AI trust market?
A constantly refreshed ranking of the top startups in the AI trust market, ordered by valuation.
In our updated market reports, you will find everything you need
The AI trust market includes startups focused on AI security, evaluation, observability, governance, compliance and risk management.
Security platforms currently lead the market, while tools for testing AI agents and monitoring model performance are attracting growing investor interest.
We update this list every month as new funding rounds, acquisitions and valuation signals become available.
A quick summary table
| Metric | Value |
|---|---|
| Most valuable AI trust startup | Braintrust, $800M |
| Second most valuable AI trust startup | Protect AI, $650M–$700M |
| Median AI trust startup valuation | Approximately $40M |
| Share of AI trust valuation captured by the top 10 | Approximately 45% |
| Top AI trust startup valuation vs. median | 20 times |
| Median valuation-to-capital-raised ratio | Approximately 4.6 times |
| AI trust startups valued at $1B+ | 0 |
Top startups in the AI trust market ranked by valuation
Here is an updated table that ranks the top startups in the AI trust market based on their latest reported or estimated valuations.
| # | Startup Name | What They Do | Current Valuation ($) | Valuation Confidence Level | Valuation Type | Evidence Status | Total Funding ($) | Funding Confidence Level |
|---|---|---|---|---|---|---|---|---|
| 1 | Braintrust | AI evaluation and observability | $800M | Full Confidence | Announced Private Round Valuation | Observed | $124M | Strong Confidence |
| 2 | Protect AI | AI and ML security | $650M–$700M | Strong Confidence | Acquisition Value | Estimated | $109M | Full Confidence |
| 3 | Zafran Security | AI-native threat exposure management | $500M–$700M | Strong Confidence | Implied Valuation from Raise | Implied | $130M | Strong Confidence |
| 4 | Arize AI | AI observability and evaluation | $520M–$650M | Partial Confidence | Implied Valuation from Raise | Implied | $131M | Full Confidence |
| 5 | Patronus AI | Tests and simulates AI agents | $400M–$550M | Strong Confidence | Implied Valuation from Raise | Implied | $70M | Full Confidence |
| 6 | WitnessAI | Enterprise AI security governance | $380M–$520M | Partial Confidence | Implied Valuation from Raise | Implied | $90M | Strong Confidence |
| 7 | Galileo | Generative AI evaluation platform | $350M–$500M | Partial Confidence | Implied Valuation from Raise | Implied | $68M | Full Confidence |
| 8 | Straiker | Agentic AI security platform | $350M–$500M | Strong Confidence | Implied Valuation from Raise | Implied | $85M | Full Confidence |
| 9 | Noma Security | AI agent security platform | $380M–$430M | Strong Confidence | Announced Private Round Valuation | Observed | $132M | Full Confidence |
| 10 | Robust Intelligence | AI model security testing | $350M–$450M | Partial Confidence | Acquisition Value | Estimated | $44M | Strong Confidence |
| 11 | Zenity | Secures enterprise AI agents | $275M–$425M | Partial Confidence | Implied Valuation from Raise | Implied | $60M | Strong Confidence |
| 12 | HiddenLayer | AI model security platform | $250M–$400M | Partial Confidence | Implied Valuation from Raise | Implied | $56M | Full Confidence |
| 13 | Aim Security | Secures enterprise generative AI | $300M–$350M | Strong Confidence | Acquisition Value | Estimated | $28M | Full Confidence |
| 14 | Aurascape | Controls enterprise AI activity | $250M–$400M | Partial Confidence | Implied Valuation from Raise | Implied | $63M | Full Confidence |
| 15 | Lakera | Secures generative AI applications | $280M–$320M | Strong Confidence | Acquisition Value | Estimated | $30M | Full Confidence |
| 16 | Reco | Secures SaaS and AI usage | $250M–$350M | Strong Confidence | Implied Valuation from Raise | Implied | $85M | Full Confidence |
| 17 | Fiddler AI | AI observability and governance | $230M–$350M | Partial Confidence | Implied Valuation from Raise | Implied | $100M | Partial Confidence |
| 18 | Gray Swan AI | AI red-teaming and protection | $200M–$320M | Partial Confidence | Implied Valuation from Raise | Implied | $50M | Partial Confidence |
| 19 | Prompt Security | Protects enterprise generative AI usage | $180M–$250M | Partial Confidence | Acquisition Value | Estimated | $23M | Full Confidence |
| 20 | JetStream Security | Real-time AI governance security | $140M–$230M | Strong Confidence | Implied Valuation from Raise | Implied | $34M | Full Confidence |
| 21 | CalypsoAI | Enterprise AI security guardrails | $170M–$190M | Strong Confidence | Acquisition Value | Observed | $41M | Partial Confidence |
| 22 | Credo AI | Responsible AI governance platform | $140M–$220M | Partial Confidence | Implied Valuation from Raise | Implied | $41M | Partial Confidence |
| 23 | Cranium | Enterprise AI security governance | $120M–$220M | Low Confidence | Implied Valuation from Raise | Implied | $32M | Full Confidence |
| 24 | Arthur AI | AI monitoring and risk | $120M–$200M | Low Confidence | Proxy-Based Estimate | Estimated | $60M | Strong Confidence |
| 25 | Dynamo AI | Privacy-preserving enterprise AI platform | $120M–$170M | Partial Confidence | Comparables-Based Estimate | Estimated | $19M | Full Confidence |
| 26 | Virtue AI | Enterprise AI safety and security | $110M–$170M | Partial Confidence | Implied Valuation from Raise | Implied | $30M | Partial Confidence |
| 27 | Distributional | Automated AI testing platform | $105M–$150M | Partial Confidence | Revenue or ARR Multiple Estimate | Estimated | $30M | Full Confidence |
| 28 | Harmonic Security | Prevents AI data leakage | $95M–$140M | Partial Confidence | Implied Valuation from Raise | Implied | $25M | Strong Confidence |
| 29 | Vijil | Builds trustworthy resilient AI agents | $90M–$135M | Strong Confidence | Implied Valuation from Raise | Implied | $23M | Strong Confidence |
| 30 | Lasso Security | Secures enterprise LLM applications | $90M–$130M | Partial Confidence | Proxy-Based Estimate | Estimated | $6M | Full Confidence |
| 31 | Openlayer | AI evaluation and governance platform | $75M–$115M | Strong Confidence | Implied Valuation from Raise | Implied | $19M | Full Confidence |
| 32 | Acuvity | Enterprise AI security governance | $50M–$90M | Partial Confidence | Acquisition Value | Estimated | $9M | Strong Confidence |
| 33 | Operant AI | Runtime application and AI protection | $55M–$85M | Partial Confidence | Implied Valuation from Raise | Implied | $14M | Strong Confidence |
| 34 | Datawizz | Specialized private language models | $50M–$75M | Partial Confidence | Implied Valuation from Raise | Implied | $16M | Partial Confidence |
| 35 | LatticeFlow AI | Validates and governs AI systems | $45M–$75M | Partial Confidence | Comparables-Based Estimate | Estimated | $15M | Strong Confidence |
| 36 | Portal26 | Manages enterprise generative AI adoption | $45M–$70M | Strong Confidence | Implied Valuation from Raise | Implied | $15M | Full Confidence |
| 37 | ModelOp | Enterprise AI governance software | $45M–$70M | Partial Confidence | Revenue or ARR Multiple Estimate | Estimated | $16M | Full Confidence |
| 38 | Mindgard | Automated AI security testing | $45M–$70M | Partial Confidence | Implied Valuation from Raise | Implied | $12M | Full Confidence |
| 39 | Trust Lab | Online trust safety platform | $45M–$70M | Partial Confidence | Implied Valuation from Raise | Implied | $15M | Partial Confidence |
| 40 | Modulos | AI governance compliance platform | $45M–$65M | Strong Confidence | Implied Valuation from Raise | Implied | $17M | Partial Confidence |
| 41 | Seldon | ML deployment and governance | $40M–$70M | Low Confidence | Acquisition Value | Estimated | $33M | Partial Confidence |
| 42 | Singulr AI | Enterprise AI governance security | $40M–$65M | Partial Confidence | Implied Valuation from Raise | Implied | $10M | Full Confidence |
| 43 | Aporia | AI observability and guardrails | $45M–$55M | Strong Confidence | Acquisition Value | Estimated | $30M | Full Confidence |
| 44 | Giskard | AI model security testing | $40M–$60M | Partial Confidence | Comparables-Based Estimate | Estimated | $2M | Strong Confidence |
| 45 | Pillar Security | Secures AI software development | $38M–$60M | Partial Confidence | Implied Valuation from Raise | Implied | $9M | Full Confidence |
| 46 | DeepKeep | AI-native model security platform | $35M–$60M | Partial Confidence | Implied Valuation from Raise | Implied | $10M | Strong Confidence |
| 47 | Private AI | PII detection and redaction | $35M–$55M | Partial Confidence | Comparables-Based Estimate | Estimated | $11M | Strong Confidence |
| 48 | Holistic AI | Enterprise AI governance platform | $35M–$55M | Partial Confidence | Revenue or ARR Multiple Estimate | Estimated | Not disclosed | Low Confidence |
| 49 | SurePath AI | Enterprise GenAI governance | $30M–$60M | Low Confidence | Acquisition Value | Estimated | $6M | Strong Confidence |
| 50 | ValidMind | AI model risk management | $30M–$50M | Partial Confidence | Revenue or ARR Multiple Estimate | Estimated | $11M | Partial Confidence |
| 51 | 2021.AI | Enterprise responsible AI governance | $30M–$50M | Low Confidence | Comparables-Based Estimate | Estimated | $4M | Partial Confidence |
| 52 | Stratyfy | Fair lending decision AI | $30M–$50M | Partial Confidence | Comparables-Based Estimate | Estimated | $10M | Partial Confidence |
| 53 | HoneyHive | AI agent evaluation observability | $30M–$45M | Strong Confidence | Implied Valuation from Raise | Implied | $7M | Full Confidence |
| 54 | Guardrails AI | LLM validation and guardrails | $28M–$45M | Partial Confidence | Implied Valuation from Raise | Implied | $8M | Full Confidence |
| 55 | Kolena | Tests enterprise AI models | $25M–$45M | Low Confidence | Revenue or ARR Multiple Estimate | Estimated | $21M | Strong Confidence |
| 56 | Virtuous AI | Strategic AI operating platform | $25M–$45M | Low Confidence | Implied Valuation from Raise | Implied | $9M | Low Confidence |
| 57 | Monitaur | Regulated AI model governance | $25M–$40M | Partial Confidence | Revenue or ARR Multiple Estimate | Estimated | $13M | Strong Confidence |
| 58 | Trustible | AI governance and compliance platform | $25M–$40M | Partial Confidence | Implied Valuation from Raise | Implied | $8M | Strong Confidence |
| 59 | Atla | Evaluation models for AI systems | $22M–$35M | Partial Confidence | Implied Valuation from Raise | Implied | $6M | Strong Confidence |
| 60 | OpenBoxAI | Enterprise AI governance infrastructure | $22M–$33M | Strong Confidence | Implied Valuation from Raise | Implied | $5M | Full Confidence |
| 61 | Deeploy | Responsible AI deployment platform | $20M–$35M | Partial Confidence | Comparables-Based Estimate | Estimated | $11M | Low Confidence |
| 62 | Howso | Explainable machine learning engine | $20M–$35M | Low Confidence | Proxy-Based Estimate | Estimated | $0M | Full Confidence |
| 63 | CitrusX | AI validation and explainability | $20M–$33M | Partial Confidence | Implied Valuation from Raise | Implied | $5M | Strong Confidence |
| 64 | WhyLabs | AI observability and monitoring | $18M–$30M | Low Confidence | Acquisition Value | Estimated | $14M | Full Confidence |
| 65 | Calvin Risk | Quantifies enterprise AI risks | $18M–$30M | Partial Confidence | Implied Valuation from Raise | Implied | $6M | Full Confidence |
| 66 | AIShield | Enterprise AI security platform | $18M–$30M | Low Confidence | Proxy-Based Estimate | Estimated | $0M | Full Confidence |
| 67 | Unbound Security | Prevents enterprise AI data leakage | $18M–$30M | Partial Confidence | Implied Valuation from Raise | Implied | $4M | Partial Confidence |
| 68 | Jozu | Enterprise AI orchestration tooling | $18M–$28M | Partial Confidence | Implied Valuation from Raise | Implied | $4M | Full Confidence |
| 69 | TrojAI | AI application security testing | $15M–$30M | Low Confidence | Acquisition Value | Estimated | $9M | Strong Confidence |
| 70 | Armilla AI | AI assurance and insurance | $15M–$25M | Partial Confidence | Implied Valuation from Raise | Implied | $6M | Partial Confidence |
| 71 | Protecto | AI data privacy guardrails | $15M–$25M | Partial Confidence | Revenue or ARR Multiple Estimate | Estimated | $5M | Strong Confidence |
| 72 | Scorecard | Evaluates and monitors AI agents | $15M–$24M | Strong Confidence | Implied Valuation from Raise | Implied | $4M | Full Confidence |
| 73 | Hamming AI | Tests voice AI reliability | $14M–$23M | Partial Confidence | Implied Valuation from Raise | Implied | $4M | Strong Confidence |
| 74 | FairNow | Enterprise AI governance software | $15M–$22M | Partial Confidence | Acquisition Value | Estimated | $4M | Full Confidence |
| 75 | Abzu AI | Explainable AI modeling platform | $12M–$25M | Low Confidence | Comparables-Based Estimate | Estimated | $9M | Partial Confidence |
| 76 | Lumenova AI | AI governance risk management | $13M–$21M | Partial Confidence | Revenue or ARR Multiple Estimate | Estimated | $0M | Low Confidence |
| 77 | Numalis | Formally validates artificial intelligence | $12M–$20M | Partial Confidence | Proxy-Based Estimate | Estimated | $7M | Partial Confidence |
| 78 | Athina AI | Evaluates production AI applications | $12M–$20M | Partial Confidence | Implied Valuation from Raise | Implied | $4M | Partial Confidence |
| 79 | Deepchecks | AI testing and evaluation | $10M–$20M | Strong Confidence | Acquisition Value | Estimated | $14M | Strong Confidence |
| 80 | Enzai | Enterprise AI governance software | $11M–$19M | Low Confidence | Comparables-Based Estimate | Estimated | $4M | Full Confidence |
| 81 | Datatron | Manages production machine-learning models | $8M–$20M | Low Confidence | Proxy-Based Estimate | Estimated | $21M | Partial Confidence |
| 82 | Konfer | Agentic AI compliance controls | $10M–$18M | Low Confidence | Proxy-Based Estimate | Estimated | $7M | Partial Confidence |
| 83 | Vera | Enforces enterprise AI policies | $10M–$18M | Low Confidence | Comparables-Based Estimate | Estimated | $3M | Full Confidence |
| 84 | TrustWorks | Privacy and AI governance | $12M–$16M | Partial Confidence | Implied Valuation from Raise | Implied | $2M | Partial Confidence |
| 85 | Enkrypt AI | AI security and compliance | $10M–$17M | Partial Confidence | Implied Valuation from Raise | Implied | $2M | Full Confidence |
| 86 | Confident AI | LLM evaluation and observability | $10M–$16M | Strong Confidence | Implied Valuation from Raise | Implied | $3M | Full Confidence |
| 87 | Fairly AI | AI risk and compliance platform | $8M–$15M | Partial Confidence | Implied Valuation from Raise | Implied | $4M | Partial Confidence |
| 88 | Themis AI | Measures model prediction uncertainty | $7M–$15M | Low Confidence | Proxy-Based Estimate | Estimated | $3M | Low Confidence |
| 89 | Trail | AI governance copilot | $8M–$14M | Partial Confidence | Implied Valuation from Raise | Implied | $2M | Full Confidence |
| 90 | Saidot | Enterprise AI governance platform | $7M–$12M | Partial Confidence | Implied Valuation from Raise | Implied | $2M | Strong Confidence |
| 91 | Zetane | Enterprise document intelligence | $7M–$11M | Strong Confidence | Implied Valuation from Raise | Implied | $2M | Full Confidence |
| 92 | QuantPi | Responsible AI quality assurance | $6M–$12M | Low Confidence | Comparables-Based Estimate | Estimated | $2M | Strong Confidence |
| 93 | Etiq AI | AI testing and debugging | $6M–$10M | Partial Confidence | Revenue or ARR Multiple Estimate | Estimated | $2M | Partial Confidence |
| 94 | NannyML | Machine-learning performance monitoring | $5M–$11M | Low Confidence | Acquisition Value | Estimated | $1M | Full Confidence |
| 95 | Halluminate | RL environments for AI agents | $6M–$10M | Low Confidence | Revenue or ARR Multiple Estimate | Estimated | $1M | Strong Confidence |
| 96 | Prodago | Data and AI governance | $4M–$10M | Low Confidence | Proxy-Based Estimate | Estimated | $0M | Full Confidence |
| 97 | Mona | Production AI model monitoring | $3M–$10M | Low Confidence | Proxy-Based Estimate | Estimated | $9M | Partial Confidence |
| 98 | Guardrail Technologies | AI behavioral security governance | $3M–$8M | Low Confidence | Proxy-Based Estimate | Estimated | $0M | Low Confidence |
| 99 | Censius | Production AI model monitoring | $2M–$6M | Low Confidence | Proxy-Based Estimate | Estimated | $0M | Low Confidence |
| 100 | Asher Informatics | Clinical AI governance platform | $1M–$4M | Low Confidence | Proxy-Based Estimate | Estimated | $0M | Full Confidence |
Key valuation trends in the AI trust market
Insights
- The top 10 AI trust startups represent about $5.2B in midpoint valuation, equal to roughly 45% of the combined value of the 100 companies in this ranking.
- Braintrust is valued at about 20 times the market median, which shows how quickly valuation becomes concentrated around a small number of recognized AI trust platforms.
- Security companies dominate the upper tier. Protect AI, Zafran Security, Straiker, Noma Security, Aim Security, Lakera and Reco have a combined midpoint valuation of approximately $3.0B.
- Agentic AI trust tools are becoming a distinct value pool. Patronus AI, Straiker, JetStream Security, Vijil, HoneyHive and Scorecard collectively approach $1.3B in midpoint valuation.
- Aim Security and Lakera each reached midpoint valuations near $300M after raising about $30M, showing the strategic premium attached to generative AI security products.
- Patronus AI has an estimated midpoint valuation of $475M on $70M raised, suggesting that AI agent evaluation can attract valuation multiples similar to security infrastructure.
- The AI trust market has a clear barbell structure. Large security and evaluation platforms command several hundred million dollars, while half of the ranked companies are valued at approximately $40M or less.
- The median valuation-to-capital-raised ratio is about 4.6 times, but focused startups such as Lasso Security and Giskard sit well above that level.
A few word about our methodology
As you can see, we built a database that ranks startups in the AI trust market based on their current valuation.
Estimating startup valuations is not always straightforward. Many AI security, governance, evaluation and observability companies do not publicly disclose their valuation. The available information can also vary widely depending on the company and its stage.
To build this ranking, we applied a structured valuation methodology and cross-checked information across multiple reliable sources.
Whenever possible, we relied on direct disclosures. These include announced valuations from completed funding rounds, public filings for listed companies and official acquisition prices.
When an AI trust company is publicly listed, we use its current market capitalization as the reference valuation.
If a company was acquired and no independent valuation can reasonably be estimated today, we use the acquisition price as the main reference point.
When an AI trust startup recently raised capital but the valuation was not disclosed, we estimate the implied valuation using typical dilution levels for that stage of fundraising.
In some cases, we estimate valuations using operating metrics such as revenue, ARR, customer growth or enterprise adoption. We combine these figures with valuation multiples from comparable AI trust companies.
When direct financial data is not available, we may rely on carefully selected comparable startups and other signals such as hiring growth, investor quality, customer traction, product breadth and strategic relevance.
All estimates follow a strict evidence hierarchy. Recent funding rounds with announced valuations carry the most weight, followed by acquisition prices, strong operating metrics and comparable company analysis.
We also evaluate the age of every data point. Recent information carries more weight, while older information is treated cautiously and adjusted conservatively when necessary.
Whenever information is uncertain or incomplete, we clearly distinguish between confirmed facts, implied valuations and reasonable estimates.
Because valuation data is not always fully public, each AI trust startup in the ranking is assigned a confidence level based on the reliability, recency and consistency of the available evidence.
Full confidence means the valuation is supported by strong and recent evidence. Strong confidence means the estimate is well supported but includes minor inference. Partial confidence means the estimate relies more heavily on indirect signals. Low confidence means available information is limited or inconsistent.
When confidence is lower, we take a more conservative approach by widening the valuation range. This reflects the uncertainty and increases the probability that the true valuation falls within the estimated range.
In a world where LLMs hallucinate and unreliable information is everywhere, our goal is simple: provide data you can trust.
If you want the full detail on a specific valuation estimate, feel free to contact us and we will gladly explain.
Finally, know that we update the dataset once per month, so come back here if you need fresh information.
Related blog posts
- What are the latest fundraising trends in the AI trust market?
- Which companies have raised the most funding in the AI trust market?
