sbi-dev/sbi

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sbi is a Python package for simulation-based inference, designed to meet the needs of both researchers and practitioners. Whether you need fine-grained control or an easy-to-use interface, sbi has you covered.

Stars: 865
Forks: 260
Open beginner issues: 0
Indexed issues: 47
Avg merge: 4d 3h
Merged PRs (30d): 5

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 3, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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47 open issues indexed

Make the `proposal` argument types explicit Open

feature request

Difficulty 4/5 3-5 days Newbie friendliness 52/100

sbi-dev/sbi#2011 · Opened Sep 15, 2026
Distance batching skips samples when the batch size does not divide the sample count Open

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

sbi-dev/sbi#2010 · 1 comment · Opened Sep 13, 2026
Clarify the intended behavior of the l1 metric Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

sbi-dev/sbi#2008 · 2 comments · Opened Sep 7, 2026
`LC2ST_NF` does not honor the `LC2ST` method contract Open

API changes architecture blocked diagnostics

Difficulty 5/5 Over a week Newbie friendliness 35/100

sbi-dev/sbi#2005 · 2 comments · Opened Sep 3, 2026
Posterior `.to()` methods fail on plain torch priors and drop cached state Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 76/100

sbi-dev/sbi#2004 · 3 comments · 1 reaction · Opened Sep 2, 2026
Refactor posterior .to() methods to not erase internal state Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

sbi-dev/sbi#1995 · 1 comment · Opened Aug 18, 2026
Simplify x_o workflow: enforce bind() as the canonical way to associate observations with potentials Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

sbi-dev/sbi#1994 · Opened Aug 18, 2026
Add NeuralInference.save() and .load() Open

enhancement estimators

Difficulty 5/5 Over a week Newbie friendliness 35/100

sbi-dev/sbi#1980 · 1 comment · 1 reaction · Opened Aug 11, 2026
plot: fix limits handling, unknown kwargs and a old docstring reference Open

bug diagnostics

Difficulty 3/5 1-2 days Newbie friendliness 72/100

sbi-dev/sbi#1978 · 2 comments · 1 reaction · Opened Aug 11, 2026
Round-level convergence criteria for sequential NPE - is this still on the roadmap? Open

enhancement inference

Difficulty 5/5 Over a week Newbie friendliness 38/100

sbi-dev/sbi#1976 · 2 comments · 1 reaction · Opened Aug 11, 2026
DeprecationWarning: removing deprecated methods Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sbi-dev/sbi#1873 · 2 comments · 2 reactions · Opened Jun 2, 2026
Feature proposal: integrating CP4SBI (local conformal calibration of credible sets) into sbi Open

diagnostics enhancement research

Difficulty 5/5 Over a week Newbie friendliness 35/100

sbi-dev/sbi#1862 · 2 comments · 1 reaction · Opened May 10, 2026
Progress bar issue with sampling from MCMCPosterior Open

bug needs info samplers

Difficulty 3/5 1-2 days Newbie friendliness 58/100

sbi-dev/sbi#1838 · 3 comments · Opened Apr 8, 2026
Improve vector field adaptors to not require caching Open

enhancement inference score-flow-matching

Difficulty 5/5 Over a week Newbie friendliness 30/100

sbi-dev/sbi#1783 · 1 comment · Opened Feb 26, 2026
open codespace error: This codespace is currently running in recovery mode due to a configuration error. Please review the creation logs, update your dev container configuration as needed, and run the "Rebuild Container" command to rectify. Open

installation question

Difficulty 3/5 1-2 days Newbie friendliness 25/100

sbi-dev/sbi#1723 · Opened Jan 11, 2026
How to handle on-purpose NaN entries in x_o? Open

bug embedding-nets

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sbi-dev/sbi#1717 · 3 comments · Opened Jan 5, 2026
`torch.sum` in NPSE Open

estimators score-flow-matching

Difficulty 4/5 3-5 days Newbie friendliness 52/100

sbi-dev/sbi#1685 · 4 comments · 2 reactions · Opened Nov 3, 2025
Add support for multimodal data Open

embedding-nets enhancement feature request

sbi-dev/sbi#1672 · 5 comments · 1 assignee · Opened Oct 7, 2025
Labeled Samples object for less verbose plotting Open

diagnostics enhancement

sbi-dev/sbi#1667 · 2 assignees · Opened Sep 18, 2025
Getting rid of `posterior_nn`, `likelihood_nn`,... Open

API changes architecture estimators

Difficulty 5/5 Over a week Newbie friendliness 30/100

sbi-dev/sbi#1659 · 1 comment · Opened Sep 4, 2025
NaN/Inf present in the evaluation of the MoG proposal posterior SEIRb Open

bug inference

Difficulty 4/5 3-5 days Newbie friendliness 25/100

sbi-dev/sbi#1570 · 2 comments · Opened Apr 17, 2025
Sensitivity analysis - access the jacobian Open

diagnostics enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

sbi-dev/sbi#1553 · Opened Apr 3, 2025
Remaining To-Do for the new documentation website Open

docs

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sbi-dev/sbi#1536 · 9 comments · Opened Mar 26, 2025
Inconsistency in documented/expected shapes for estimators Open

bug estimators

Difficulty 4/5 3-5 days Newbie friendliness 32/100

sbi-dev/sbi#1500 · 3 comments · 2 reactions · Opened Mar 20, 2025
Adding interface to azula samplers Open

enhancement hackathon samplers score-flow-matching

Difficulty 5/5 Over a week Newbie friendliness 28/100

sbi-dev/sbi#1468 · 3 comments · Opened Mar 18, 2025
Multifidelity Simulation-based Inference for Computationally Expensive Simulators Open

enhancement estimators feature request research

Difficulty 5/5 Over a week Newbie friendliness 20/100

sbi-dev/sbi#1457 · 2 comments · Opened Mar 17, 2025
Inconsistent state in `LikelihoodEstimator` Open

architecture estimators hackathon

Difficulty 5/5 Over a week Newbie friendliness 20/100

sbi-dev/sbi#1455 · 1 comment · Opened Mar 17, 2025
Better training loop for diffusion models and flow matching Open

enhancement inference research score-flow-matching

sbi-dev/sbi#1445 · 4 comments · 1 assignee · Opened Mar 13, 2025
Add new diffusion samplers Open

enhancement samplers score-flow-matching

Difficulty 5/5 Over a week Newbie friendliness 35/100

sbi-dev/sbi#1438 · 1 comment · Opened Mar 13, 2025
Extend ScoreEstimator training approaches Open

enhancement estimators research score-flow-matching

Difficulty 5/5 Over a week Newbie friendliness 35/100

sbi-dev/sbi#1436 · 1 comment · Opened Mar 13, 2025
tests: switch to a bi-modal posterior for testing Open

hackathon tests

sbi-dev/sbi#1430 · 3 comments · 1 assignee · Opened Mar 13, 2025
tests: plan a better test suite structure and naming scheme Open

hackathon tests

Difficulty 5/5 Over a week Newbie friendliness 25/100

sbi-dev/sbi#1429 · Opened Mar 13, 2025
tests: use fixtures within one test module to speed up tests Open

hackathon tests

sbi-dev/sbi#1428 · 2 comments · 1 assignee · Opened Mar 13, 2025
tests: profiling Open

hackathon karma tests

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sbi-dev/sbi#1424 · Opened Mar 12, 2025
Refactor NeuralPosterior interface Open

API changes architecture bug hackathon posteriors

Difficulty 5/5 Over a week Newbie friendliness 25/100

sbi-dev/sbi#1407 · Opened Feb 24, 2025
docs: improve logging during posterior sampling Open

docs hackathon samplers

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sbi-dev/sbi#1403 · 3 comments · Opened Feb 21, 2025
Improve Mini-SBIBM Open

enhancement hackathon tests

Difficulty 5/5 Over a week Newbie friendliness 35/100

sbi-dev/sbi#1396 · 5 comments · Opened Feb 20, 2025
Detailed tutorial on training interface / Out of memory while training on large dataset on GPU despite batching Open

bug gpu inference

Difficulty 4/5 3-5 days Newbie friendliness 30/100

sbi-dev/sbi#1386 · 3 comments · Opened Feb 11, 2025
tests: improve the sbi test suite Open

tests

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sbi-dev/sbi#1378 · 6 comments · Opened Jan 28, 2025
A "flexible interface" for diagnostic tools Open

diagnostics enhancement hackathon research

Difficulty 5/5 Over a week Newbie friendliness 25/100

sbi-dev/sbi#1330 · 1 comment · Opened Dec 11, 2024
Support variably sized observations with suitable embedding net Open

bug embedding-nets enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sbi-dev/sbi#1324 · 2 comments · 2 reactions · Opened Dec 10, 2024
Clean up LC2ST tutorial Open

diagnostics docs

Difficulty 3/5 1-2 days Newbie friendliness 45/100

sbi-dev/sbi#1305 · 1 comment · 3 reactions · Opened Nov 13, 2024
New organization of `SNPE` methods Open

API changes enhancement hackathon inference

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sbi-dev/sbi#1241 · 4 comments · Opened Aug 28, 2024
Make 'RestrictedTransformForConditional' conform to 'torch.Transform' interface Open

architecture diagnostics hackathon

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

sbi-dev/sbi#1057 · 2 comments · Opened Mar 20, 2024
pytorch distribution.support.check() fails for TransformedDistributions Open

blocked bug inference samplers

Difficulty 4/5 3-5 days Newbie friendliness 30/100

sbi-dev/sbi#738 · 6 comments · Opened Sep 5, 2022
Feature request: Observation intervals Open

docs enhancement inference

Difficulty 5/5 Over a week Newbie friendliness 30/100

sbi-dev/sbi#448 · 5 comments · Opened Mar 5, 2021
Allow parameters to have different data types and shapes Open

API changes enhancement estimators hackathon

Difficulty 5/5 Over a week Newbie friendliness 25/100

sbi-dev/sbi#218 · 4 comments · Opened Jun 8, 2020

sbi-dev/sbi

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