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v3.0.0

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•Last updated Oct 5, 2026

New major release of loo, includes breaking changes.

6% complete

Format project using Air
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#291 opened Jun 12, 2025 · Updated Jul 24, 2026Draft
8
Adding pred_measure feature
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#363 opened Jun 2, 2026 · Updated Oct 8, 2026Draft
4
Improve warnings and messages behavior
stan-dev/loo#353 · opened on Apr 9, 2026 · v3.0.0
New functions for better support for different scores and metrics
stan-dev/loo#281 · opened on Feb 1, 2025 · v3.0.0
15
Parallelisation of loo using Mirai
stan-dev/loo#308 · opened on Oct 21, 2025 · v3.0.0
6
Use more functions from the posterior package
stan-dev/loo#249 · opened on Feb 27, 2024 · v3.0.0
1
Prepare loo version 3.0.0
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#379 opened Jul 1, 2026 · Updated Sep 29, 2026Draft
3
LLM code optimizations
stan-dev/loo#384 · opened on Jul 23, 2026 · v3.0.0
Mutation testing
stan-dev/loo#385 · opened on Jul 23, 2026 · v3.0.0
Change n_eff to ESS
stan-dev/loo#192 · opened on Dec 2, 2021 · v3.0.0
5
Clean up issues
stan-dev/loo#388 · opened on Jul 24, 2026 · v3.0.0
Extend loo_plot_difference
stan-dev/loo#394 · opened on Sep 9, 2026 · v3.0.0
1
Add case-study vignette for new model_compare function
stan-dev/loo#401 · opened on Sep 28, 2026 · v3.0.0
Developer notes for release v3.0.0 preparation
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#402 opened Sep 29, 2026 · Updated Oct 8, 2026Draft
2