Standard 2026 agentic-AI vendor MSAs contain six contract patterns that systematically transfer risk from vendor to enterprise customer in ways that do not appear in equivalent pre-AI enterprise software MSAs — model-version unilateral-change, training-data ambiguity on customer inputs, usage-cap auto-escalation, indemnification carve-outs for model output, data-residency commitments that don't bind sub-processors, and liability caps tied to fees-paid that don't scale with autonomous-action authority.

Status partial at publication: the six patterns are documented from public vendor terms (OpenAI, Anthropic, Microsoft, Google, AWS) but redline-success rates and which gotcha ranks most material under post-mortem are not yet measurable at scale. REVIEW: Peter.