X API Pay-Per-Use in 2026: Link Posts Now Cost 13x More Than Plain Posts
X's API moved to pay-per-use in February 2026 and now charges $0.20 per post with a URL vs $0.015 for plain posts. What it means for scheduled X posts.
What changed
LinkedIn has released its October 2026 Marketing API version, 202610. Its main addition is a Boost API that lets approved apps turn an existing member or Company Page post into a sponsored ad. Older versions are also expiring: LinkedIn's changelog lists version 202510 for sunset on October 15, 2026 and 202511 on November 16, 2026. Any tool still sending those version headers has to upgrade or its LinkedIn calls will fail.
How LinkedIn versioning works
According to LinkedIn's versioning documentation:
- New Marketing API versions ship monthly and are supported for a minimum of one year before sunset.
- Every call must include a
Linkedin-Versionheader inYYYYMMformat (for example202610). LinkedIn does not apply the latest version by default. - A request with a missing or deprecated version header returns an error.
In practice, a scheduling tool that hasn't updated its LinkedIn integration in about a year can stop publishing on sunset day.
The new Boost API
LinkedIn's Boost overview describes two contexts. Member Boost covers posts owned by the authenticated member. Company Page Boost covers posts on behalf of an organization the member can manage. The workflow mirrors the native Boost button:
| Step | Endpoint (member / organization) | What it does |
|---|---|---|
| 1. Status | memberBoostStatus / organizationBoostStatus | Checks whether the post can be boosted, and why not if it can't |
| 2. Init | memberBoostInit / organizationBoostInit | Resolves or creates the sponsored account and billing setup |
| 3. Hydrate | memberBoostHydrate / organizationBoostHydrate | Previews targeting, forecast and pricing for a budget and objective |
| 4. Post | memberBoostPost / organizationBoostPost | Creates the campaign group, campaign and creative |
| 5. Analytics | memberBoostAnalytics | Returns performance for boosted member posts |
The docs set some limits. Apps need approval for the Advertising API product and the matching boost permissions (rw_member_boost, rw_organization_boost and related read scopes). Requests need Linkedin-Version: 202610 or higher. Company Page Boost analytics are not supported yet, and LinkedIn points to the Ad Analytics API for Page boost reporting.
Other 2026 changes for post publishers
The 2026 changelog also includes:
- 202602: the Videos API gained optional
templateNameandlinkbackContextfields for attributing videos made with third-party tools. - 202604: member creator post analytics added metrics such as sends, saves, link clicks and followers gained from a post.
- 202605: a breaking change to the
metricTypeformat in member post and video analytics responses.
Who it affects
- Brands and agencies that publish to LinkedIn through a third-party tool. Your tool has to send a supported version header. If it's still on 202510 or 202511, posting will break on the sunset dates.
- Teams that boost top-performing organic posts. Boosting can now happen inside approved third-party tools instead of only in LinkedIn's interface, if your tool builds it.
- Social and paid teams that work separately. Boost creates real campaigns and spend in an ad account, so who can trigger it now matters.
What to do if you schedule posts
- Ask your tool provider (or your developers) which LinkedIn API version they use. Anything at 202510 or 202511 needs to move before October 15 and November 16, 2026.
- Watch the first scheduled LinkedIn posts after each sunset date. Check that they published and look for reconnect or error notices from your scheduler.
- Reconnect LinkedIn accounts if your tool asks. New scopes, such as boost permissions, can require re-authorization.
- Set a boost rule before boosting is one click away. Decide what qualifies a post (for example, top engagement in its first 48 hours), who approves spend, and which ad account pays.
- Track organic and boosted performance separately. Company Page boost results aren't in the Boost analytics endpoint yet, so compare like with like when reporting.
- Keep the organic calendar steady. Boosting only helps posts that are already working. The LinkedIn post generator and our scheduling guide help keep the pipeline full. See the LinkedIn channel page for Social9's LinkedIn support.
FAQ
What is the latest LinkedIn Marketing API version?
October 2026, header value 202610, per LinkedIn's versioning page.
How long is a LinkedIn API version supported?
A minimum of one year before sunset, according to LinkedIn.
Can I boost a Company Page post through the API?
Yes, with version 202610 or later, an app approved for the Advertising API and the rw_organization_boost permission (Boost overview).
Sources
- Recent Marketing API changes (Microsoft Learn)
- LMS API documentation versioning (Microsoft Learn)
- Boost overview (Microsoft Learn)
More platform updates: Social9 news.
Source: original announcement