stan-dev/math
View on GitHubThe Stan Math Library is a C++ template library for automatic differentiation of any order using forward, reverse, and mixed modes. It includes a range of built-in functions for probabilistic modeling, linear algebra, and equation solving.
- Stars
- 839
- Forks
- 220
- Open beginner issues
- 0
- Indexed issues
- 272
- Avg merge
- 2d 4h
- Merged PRs (30d)
- 14
- Dominant language
- C++
- License
- BSD-3-Clause
- Last GitHub push
- Sep 16, 2026
- Latest indexed
- Sep 19, 2026
- Contributing guide
- Contributing guide
- Code of conduct
- No code of conduct
- Beginner labels
- good first issue
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feature new function
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feature
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feature new function
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Difficulty 4/5 3-5 days Newbie friendliness 58/100
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feature good first issue new function
Difficulty 5/5 Over a week Newbie friendliness 32/100
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feature good first issue
Difficulty 5/5 Over a week Newbie friendliness 35/100
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good first issue new function
Difficulty 4/5 3-5 days Newbie friendliness 52/100
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feature new function
Difficulty 5/5 Over a week Newbie friendliness 35/100
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Difficulty 4/5 3-5 days Newbie friendliness 45/100
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Difficulty 5/5 Over a week Newbie friendliness 42/100
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continuous integration
Difficulty 4/5 3-5 days Newbie friendliness 38/100
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distributions good first issue numerics
Difficulty 3/5 1-2 days Newbie friendliness 55/100
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Difficulty 5/5 Over a week Newbie friendliness 28/100
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Difficulty 4/5 3-5 days Newbie friendliness 30/100
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feature new function
Difficulty 5/5 Over a week Newbie friendliness 42/100
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Difficulty 5/5 Over a week Newbie friendliness 35/100
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Difficulty 3/5 1-2 days Newbie friendliness 48/100
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new function
Difficulty 5/5 Over a week Newbie friendliness 25/100
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new function
Difficulty 5/5 Over a week Newbie friendliness 25/100
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feature
Difficulty 3/5 1-2 days Newbie friendliness 45/100
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good first issue
Difficulty 5/5 Over a week Newbie friendliness 35/100
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Difficulty 4/5 3-5 days Newbie friendliness 35/100
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Difficulty 3/5 1-2 days Newbie friendliness 35/100
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Difficulty 5/5 Over a week Newbie friendliness 35/100
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bug distributions good first issue numerics
Difficulty 4/5 3-5 days Newbie friendliness 45/100
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Difficulty 4/5 3-5 days Newbie friendliness 35/100
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Add N-d sum to zero Open
Difficulty 5/5 Over a week Newbie friendliness 25/100
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feature new function
Difficulty 5/5 Over a week Newbie friendliness 25/100
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Difficulty 5/5 Over a week Newbie friendliness 35/100
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Difficulty 4/5 3-5 days Newbie friendliness 35/100
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Difficulty 3/5 1-2 days Newbie friendliness 35/100
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Add Multinomial GLM Open
Difficulty 5/5 Over a week Newbie friendliness 25/100
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Difficulty 2/5 1-3 hours Newbie friendliness 45/100
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Explore updating TBB Opendependencies
Difficulty 5/5 Over a week Newbie friendliness 25/100
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good first issue
Difficulty 5/5 Over a week Newbie friendliness 35/100
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Difficulty 4/5 3-5 days Newbie friendliness 35/100
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Difficulty 5/5 Over a week Newbie friendliness 25/100
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Difficulty 3/5 1-2 days Newbie friendliness 45/100
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feature good first issue new function
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feature good first issue
Difficulty 3/5 1-2 days Newbie friendliness 42/100
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feature
Difficulty 4/5 3-5 days Newbie friendliness 35/100
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feature good first issue
Difficulty 4/5 3-5 days Newbie friendliness 35/100