tag:github.com,2008:https://github.com/stan-dev/cmdstan/releases Release notes from cmdstan 2026-01-13T15:40:49Z tag:github.com,2008:Repository/16967338/v2.38.0 2026-01-13T16:25:57Z v2.38.0 (13 January 2026) <ul> <li>Removed <code>STAN_CPP_OPTIMS</code> from the <code>model info</code> command. It was never set to the correct value. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="3613316561" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1332" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1332/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1332">#1332</a>)</li> </ul> <h2>Documentation</h2> <p>HTML</p> <ul> <li><a href="https://mc-stan.org/docs/2_38/cmdstan-guide/index.html" rel="nofollow">CmdStan User's Guide 2.38</a></li> </ul> <p>PDF</p> <ul> <li><a href="https://mc-stan.org/docs/2_38/cmdstan-guide-2_38.pdf" rel="nofollow">CmdStan User's Guide 2.38</a></li> </ul> serban-nicusor-toptal tag:github.com,2008:Repository/16967338/v2.38.0-rc1 2026-01-13T15:41:35Z v2.38.0-rc1 (6 January 2026) No content. serban-nicusor-toptal tag:github.com,2008:Repository/16967338/v2.37.0 2025-11-06T15:37:03Z v2.37.0 (2 September 2025) <ul> <li>Changed the default value of sig_figs to 8. This should reduce errors when using the output of CmdStan as further input to Stan programs. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2788251608" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1308" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1308/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1308">#1308</a>)</li> <li>Updated the behavior of filename arguments when requesting multiple chains. In addition to the existing behavior, users can now pass a comma-separated list of filenames to specify the output files for each chain. This allows for more flexibility in naming output files when running multiple chains. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2861141913" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1312" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1312/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1312">#1312</a>, <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2938549677" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1318" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1318/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1318">#1318</a>)</li> <li>Added more information when encountering a system error like an unwriteable file or a full disk. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2915153714" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1316" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1316/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1316">#1316</a>)</li> <li>Improved dependency discovery when running CmdStan's test suite. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2907712363" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1314" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1314/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1314">#1314</a>)</li> <li>Removed the mips64el build of CmdStan. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2946894648" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1319" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1319/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1319">#1319</a>)</li> <li>Re-added ESS/s to stansummary. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2972670777" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1320" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1320/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1320">#1320</a>)</li> <li>Fixed an issue with the diagnose command using the wrong number of iterations when calculating percentages. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2977639530" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1321" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1321/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1321">#1321</a>)</li> </ul> <h2>Documentation</h2> <p>HTML</p> <ul> <li><a href="https://mc-stan.org/docs/2_37/cmdstan-guide/index.html" rel="nofollow">CmdStan User's Guide 2.37</a></li> </ul> <p>PDF</p> <ul> <li><a href="https://mc-stan.org/docs/2_37/cmdstan-guide-2_37.pdf" rel="nofollow">CmdStan User's Guide 2.37</a></li> </ul> serban-nicusor-toptal tag:github.com,2008:Repository/16967338/v2.37.0-rc4 2025-08-22T09:01:02Z v2.37.0-rc4 (22 August 2025) No content. serban-nicusor-toptal tag:github.com,2008:Repository/16967338/v2.37.0-rc3 2025-08-18T15:02:12Z v2.37.0-rc3 (18 August 2025) No content. serban-nicusor-toptal tag:github.com,2008:Repository/16967338/v2.37.0-rc2 2025-06-12T13:04:23Z v2.37.0-rc2 (12 June 2025) No content. serban-nicusor-toptal tag:github.com,2008:Repository/16967338/v2.37.0-rc1 2025-06-05T15:32:15Z v2.37.0-rc1 (5 June 2025) No content. serban-nicusor-toptal tag:github.com,2008:Repository/16967338/v2.36.0 2025-09-02T16:11:50Z v2.36.0 (10 December 2024) <ul> <li>No longer force fix_param when model has no parameters. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2449015064" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1288" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1288/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1288">#1288</a>)</li> <li>Updated stansummary to use split, rank-normalized Rhat and ESS. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2627728142" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1301" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1301/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1301">#1301</a>)</li> <li>Fixed stansummary crashing if it is run on a csv file without any <code>__</code> columns (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2378219779" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1283" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1283/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1283">#1283</a>)</li> <li>Fixed stansummary not rebuilding when a dependent file changes (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2378219779" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1283" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1283/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1283">#1283</a>)</li> <li>Removed support for adding makefile variables in <code>~/.config/stan/make.local</code>. Use the <code>make/local</code> file in the CmdStan directory instead. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2378212819" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1282" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1282/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1282">#1282</a>, <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2386367343" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1284" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1284/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1284">#1284</a>)</li> <li>Windows: Don't try to copy tbb.dll if TBB_TARGETS is undefined. (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="2395868381" data-permission-text="Title is private" data-url="https://github.com/stan-dev/cmdstan/issues/1285" data-hovercard-type="pull_request" data-hovercard-url="/stan-dev/cmdstan/pull/1285/hovercard" href="https://github.com/stan-dev/cmdstan/pull/1285">#1285</a>)</li> </ul> <h2>Documentation</h2> <p>HTML</p> <ul> <li><a href="https://mc-stan.org/docs/2_36/cmdstan-guide/index.html" rel="nofollow">CmdStan User's Guide 2.36</a></li> </ul> <p>PDF</p> <ul> <li><a href="https://mc-stan.org/docs/2_36/cmdstan-guide-2_36.pdf" rel="nofollow">CmdStan User's Guide 2.36</a></li> </ul> serban-nicusor-toptal tag:github.com,2008:Repository/16967338/v2.36.0-rc2 2024-12-03T13:21:26Z v2.36.0-rc2 (3 December 2024) No content. serban-nicusor-toptal tag:github.com,2008:Repository/16967338/v2.36.0-rc1 2024-11-25T19:37:27Z v2.36.0-rc1 (25 November 2024) No content. serban-nicusor-toptal