Opec+ Cohesion.
a QUANTITATIVE SCORING FRAMEWORK

OPEC+ cohesion is a press statement until it is tested. The test comes when the conditions that made compliance rational for each member state cease to apply: when fiscal breakevens diverge sharply, when spare capacity becomes too costly to hold, when geopolitical relationships between members deteriorate, or when a non-OPEC+ producer captures market share that a compliant OPEC+ member has voluntarily surrendered.

The desk's quantitative scoring framework evaluates cohesion across five dimensions, each scored 0 to 20: fiscal breakeven convergence (how similar are members' required oil prices for budget balance?); spare capacity distribution (is the burden of cuts falling proportionally or asymmetrically?); geopolitical alignment (are key member pairs cooperating or in active tension?); enforcement tolerance (has the alliance demonstrated willingness to respond to non-compliance?); and non-OPEC+ competitive pressure (is the market share loss to shale, GOM deepwater or other non-members at a level that challenges the economics of compliance?).

The current composite score is 61 out of 100, which the desk classifies as 'conditionally cohesive.' The alliance holds together under current conditions but has limited resilience to shock.

The IMF's most recent fiscal breakeven estimates (price per barrel of Brent required for each OPEC+ member to balance its government budget) show a wide dispersion across the alliance.

Brent at the current USD 72 to 78 range is comfortably above the Gulf states' breakevens and below Iraq, Algeria and Nigeria's requirements. This dispersion creates the central cohesion tension: the countries that need to cut most (Iraq, Algeria) to support prices are the countries with the strongest fiscal incentive to cheat.

Saudi Arabia is the swing producer that has historically provided the enforcement mechanism, taking unilateral additional cuts when other members cheat. That role is increasingly economically painful at current oil prices, which are below Saudi Arabia's fiscal breakeven. The kingdom's tolerance for continued sacrifice cuts is finite.

OPEC+'s spare capacity is heavily concentrated in three countries: Saudi Arabia (approximately 2.5 to 3.0 million bpd), UAE (approximately 1.0 to 1.5 million bpd) and Iraq (approximately 0.5 to 0.8 million bpd). Russia's spare capacity is more uncertain given sanctions-related information constraints and the structural decline of some legacy fields.

The concentration of spare capacity in the Gulf states creates an asymmetric burden: Saudi Arabia and the UAE are holding the most production off the market relative to their technical capacity. The economic cost of this restraint, measured as forgone revenue at current prices, is approximately USD 8 to 12 billion per month for Saudi Arabia alone.

The political constraint is that unilateral Saudi expansion to recover market share would collapse prices, which would harm Saudi Arabia more than anyone. The equilibrium where Saudi Arabia maintains restraint requires sufficient alliance compliance to justify the cost. When compliance deteriorates (as it did with Iraq exceeding its quota throughout 2024 to 2025), Saudi Arabia faces the choice of tolerating free-riding or threatening to flood the market.

Russia's participation in OPEC+ since 2016 (as part of the OPEC+ extension) created a politically complex but economically beneficial arrangement: Russia got higher oil prices; Saudi Arabia got a partner large enough to make the coalition meaningful. The Ukraine war and subsequent Western sanctions have strained this arrangement.

Russia's actual production and export levels are difficult to verify independently. The shadow fleet of tankers operating outside Western shipping insurance and port systems has given Russia considerable ability to circumvent Western price caps. Estimates of Russian Urals crude production in 2025 range from 9.0 to 10.3 million bpd depending on methodology, with significant uncertainty.

For OPEC+ cohesion, the key question is not whether Russia is complying with its nominal quota (it is not, by most estimates) but whether Saudi Arabia is willing to treat Russian overproduction as a compliance failure. So far, the GCC states have diplomatically avoided direct confrontation with Russia over overproduction, choosing instead to express concern in meetings and use the escape hatch of 'compensatory cuts' language.

The desk's five-dimension score as of April 2026:

Total: 61/100. Conditionally cohesive.

The threshold the desk watches: composite score below 50 signals that at least three of the five dimensions have deteriorated to levels where individual defection becomes rational. The most likely trigger for score deterioration: a sustained oil price below USD 65 per barrel that puts Saudi Arabia's fiscal breakeven at risk while Iraq, Algeria and Nigeria face genuine budget crises.