Customers cannot use the API to build a competing AI product, train rival models, resell access, or reverse engineer the Services without Anthropic's explicit approval.
This analysis describes what Anthropic's agreement states, permits, or reserves. It does not constitute a legal determination about enforceability. Regulatory applicability and practical outcomes may vary by jurisdiction, enforcement context, and individual circumstances. Read our methodology
The use restrictions prohibit a range of competitive and derivative activities, including training competing AI models using the Services, which directly limits how businesses can use API access in developing their own AI capabilities.
Interpretive note: The term 'competing product or service' is not defined in the agreement, creating interpretive uncertainty about the restriction's scope in relation to adjacent AI development activities.
Business customers are contractually prohibited from using the API to train competing AI models, build competing services, resell API access, or reverse engineer the Services; violation of these restrictions can trigger account suspension and termination under Section I.
How other platforms handle this
Customer will not, and will not permit any other person (including any End User) to: ... (d) attempt to reverse engineer, decompile, or otherwise attempt to discover the source code or underlying components (e.g., algorithms, weights, or systems) of the Mistral AI Products, including using the Outpu...
You may not use the Services, including any outputs, to develop, train, fine-tune, or improve any machine learning model or artificial intelligence system that competes with AI21's products or services.
By using the Services or creating an account, you represent, warrant and agree that: You are not an insurance company or an employer; and You will not use the Services for any investigative forensic genealogy uses.
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"Customer may not and must not attempt to (a) access the Services to build a competing product or service, including to train competing AI models or resell the Services except as expressly approved by Anthropic; (b) reverse engineer or duplicate the Services; or (c) support any third party's attempt at any of the conduct restricted in this sentence.— Excerpt from Anthropic's Anthropic Commercial Terms
REGULATORY LANDSCAPE: Use restriction clauses in commercial API agreements are governed by general contract law; in the US, restrictions on competitive use may interact with antitrust law if applied to foreclose market competition, though contractual restrictions on direct resale and reverse engineering are standard practice. The FTC has jurisdiction over unfair methods of competition in appropriate contexts. GOVERNANCE EXPOSURE: Medium. The prohibition on using the Services to train competing AI models is a broadly stated restriction that may affect customers in the AI development space who use multiple model providers. The scope of 'competing product or service' is not defined in the agreement, which creates interpretive uncertainty about what downstream uses are prohibited. JURISDICTION FLAGS: EEA competition law may require evaluation depending on how broadly the restriction is applied in practice, particularly if it is used to foreclose legitimate competitive activities. The undefined scope of 'competing product or service' creates jurisdiction-dependent interpretive risk. CONTRACT AND VENDOR IMPLICATIONS: Enterprise and AI development customers should assess whether their product roadmap includes activities that could be characterized as competitive under this provision. The restriction on supporting third-party attempts at prohibited conduct may affect customers who provide services to other technology companies. COMPLIANCE CONSIDERATIONS: Legal teams should review the breadth of the competition restriction against the customer's specific use cases, particularly for AI platform companies or customers building proprietary model capabilities. The agreement does not define the threshold for what constitutes a 'competing product,' which should be clarified in any negotiated agreement.
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The use restrictions prohibit a range of competitive and derivative activities, including training competing AI models using the Services, which directly limits how businesses can use API access in developing their own AI capabilities.
Business customers are contractually prohibited from using the API to train competing AI models, build competing services, resell API access, or reverse engineer the Services; violation of these restrictions can trigger account suspension and termination under Section I.
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