The International Centre for Settlement of Investment Disputes (ICSID) has published its first comprehensive study on contract-based ICSID arbitration, together with a special edition of its caseload statistics and revised Model Clauses for Contracts. The study analyses 175 contract-based cases registered under the ICSID Convention and Additional Facility, including 29 pending and 146 concluded cases as at 31 December 2025, and finds that contract-based proceedings account for 16% of ICSID’s caseload, are concentrated in Africa and South America and the oil, gas and mining sectors, are less likely than treaty-based cases to fail on jurisdictional grounds, are more frequently settled or discontinued, are resolved more quickly on average, have higher claimant success rates on liability and damages, and show a 92% voluntary compliance or settlement rate where outcomes are known. ICSID also updated its Model Clauses for Contracts for the first time since 1993, providing standard drafting language for arbitration, conciliation, mediation and fact-finding proceedings, including provisions on consent, jurisdiction, applicable law and other procedural matters that parties may adapt for investment contracts.