cOAlition S has not abandoned the goal of full and immediate open access, but its 2026-2030 strategy drops the enforcement mechanism that made Plan S distinctive: financial support for transformative agreements ended after 2024, replaced by a looser, consultation-led push toward diamond open access and preprints. Science.org’s reporting calls this a retreat from strict requirements; cOAlition S calls it a “recalibration” of the same founding mission. Both are partly right, and research administrators deciding how much weight to put on the new targets need to understand exactly what changed.
Plan S is the funder mandate, launched in September 2018 by cOAlition S, requiring that publications from publicly funded research be made immediately available under an open licence, without embargo, from 2021 onward. cOAlition S is the consortium of national and philanthropic research funders — including UKRI and the Wellcome Trust — that created and enforces that mandate.
What Does the 2026-2030 Strategy Actually Change?
The cOAlition S Strategy 2026-2030, adopted by the coalition’s Leaders Group in November 2025, keeps the founding commitment to full and immediate open access but widens the toolkit for getting there. Where the original Plan S centred on a single lever — funder mandates tied to compliance checks — the new strategy explicitly states that “no single model can meet all needs” and extends its focus “beyond mandates and funding conditions.”
Three priorities anchor the plan: strengthening the foundations for sustainable and equitable open access (including an update to the Plan S principles to foreground Publish-Review-Curate models, diamond open access and preprints); supporting open digital infrastructures, including work on artificial intelligence’s implications for scholarly publishing; and exploring financially sustainable, non-APC publishing systems. Implementation runs in two phases — foundational work in 2026-2027, followed by a deeper equity and sustainability push in 2028-2030, subject to Leaders Group review.
Why Does Science.org Call This a Retreat?
Science.org’s analysis, headlined “After Coalition S disrupted scientific publishing, new plan retreats from strict requirements,” argues the new strategy has no teeth. Its central claim: cOAlition S is trading enforceable compliance rules for a broader, softer vision that favours alternatives to paywalled journals without committing to actually replace them.
The magazine credits the original Plan S with helping push the global share of newly published papers appearing as open access above 50% within a few years of the 2021 mandate taking effect. But it also revisits a well-documented side effect: Plan S’s compliance route pushed many publishers toward author-pays gold and hybrid open access, and some prestigious journals now charge authors thousands of dollars per article while continuing to publish paywalled content elsewhere in the same title. A commentary from Science’s news desk on social media put the critique concisely: the latest strategy “emphasizes consultation, but lacks spending pledges.”
- No new mandate deadlines are attached to the 2026-2030 priorities.
- No enforcement or compliance-checking mechanism replaces the one built around transformative agreements.
- Financial commitments are framed as exploratory (“investigate,” “monitor”) rather than binding.
How Does cOAlition S Defend the New Strategy?
cOAlition S rejects the framing of “retreat” outright. Its own communications describe the strategy as reinforcing, not loosening, its open access commitment, under a refreshed vision of “a scholarly communication system that enables rapid, open, transparent, and equitable sharing of trustworthy scientific knowledge.”
The coalition points to concrete institution-building as evidence of continuity rather than disengagement: it appointed Curt Rice — former rector of Oslo Metropolitan University and the Norwegian University of Life Sciences, and former Executive Director of Fulbright Norway — as its first standing Director, announced 13 May 2026, specifically to lead delivery of the 2026-2030 strategy. It has also named OPERAS, the European research infrastructure for open scholarly communication, as its new Host Secretariat, and it co-produced the Bengaluru Roadmap and Action Plan on Diamond Open Access at the 3rd Global Summit on Diamond Open Access. None of that reads as an organisation stepping back — it reads as one restructuring around a different theory of change: build sustainable, non-commercial infrastructure rather than police compliance.
What Happens to Transformative Agreements?
Transformative agreements — the “read and publish” deals between institutions and publishers designed to convert subscription spend into open access output — are the clearest casualty of the shift. cOAlition S confirmed the end of its financial support for open access publishing under transformative arrangements after 2024, having already stopped accepting new applications to the programme after 30 June 2023.
In their place, the 2026-2030 strategy channels investment toward diamond open access — journals and platforms that charge neither authors nor readers — and toward preprint infrastructure. Diamond open access is a publishing model funded through institutional, library-consortium or public grants rather than per-article charges, positioned by cOAlition S as the more equitable long-term alternative to both subscription paywalls and high-cost APCs.
| Mechanism | Status under Plan S (2018-2024) | Status under 2026-2030 strategy |
|---|---|---|
| Transformative agreements | Funded as a transitional route to compliance | Funding ended after 2024; no new applications since June 2023 |
| Diamond open access | Encouraged, not prioritised | Named strategic priority, backed by the Bengaluru Roadmap |
| Compliance mandate | Immediate OA required from 2021, checked via the Journal Checker Tool | Principles retained, but no new binding deadlines set |
| Governance | Coordinated informally among funders | Standing Director (Curt Rice) and OPERAS-hosted Secretariat |
Answer-First Questions on Plan S and cOAlition S
What Is Plan S?
Plan S is a funder-led initiative, launched in September 2018, requiring that publications resulting from publicly funded research be published in open-access journals, on open-access platforms, or deposited in open repositories immediately, without embargo. It is supported by cOAlition S, an international consortium of national and philanthropic research funders.
What Is the Main Principle of Plan S?
The core principle is that, from 2021, all scholarly publications funded by public or private grants from participating funders must be made immediately available in open access, without embargo, under an open licence — typically CC BY. That mandate remains unchanged in the 2026-2030 strategy; what has changed is how compliance is supported.
Is Open Access Always Free for Everyone?
No. Open access guarantees free reading access, not free publishing. Under the author-pays model that expanded alongside Plan S compliance, many journals shifted costs onto authors through article processing charges, which critics — including Science.org — argue created a new equity problem the 2026-2030 strategy now explicitly tries to address through diamond open access.
What Does This Mean for Institutions and Publishers?
For research administrators and institutional leaders, the practical takeaway is that Plan S’s headline compliance requirement has not disappeared — the Journal Checker Tool still governs how researchers assess eligible venues — but the financial pressure that pushed publishers into transformative agreements has been withdrawn. Institutions currently relying on transformative deals negotiated with cOAlition S funding in mind should not assume renewal on the same terms.
Publishers, meanwhile, face a genuine strategic fork: continue investing in APC-based hybrid and gold open access, where cOAlition S funding is no longer available, or build toward diamond and Publish-Review-Curate models that better match the coalition’s stated 2028-2030 priorities. Institutions tracking funder mandates and compliance timelines through their research administration functions will find this shift material to budget planning, not just messaging.
Neither “retreat” nor “recalibration” fully settles the argument. Science.org is correct that the new strategy carries no new enforcement mechanism and no fresh spending pledge. cOAlition S is correct that its founding mandate — immediate, unembargoed open access — has not been withdrawn on paper. The honest reading sits between the two: cOAlition S has traded a narrower, harder lever for a broader, softer one, betting that infrastructure and diamond open access will do the work that compliance deadlines used to do. Whether that bet pays off will be visible well before 2030, in whether diamond open access funding actually scales and whether APC inflation slows without a mandate forcing the issue.