Sleipnir

C++ Python PyPI Downloads Website C++ API Python API Discord

Sleipnir is a reverse mode autodiff library, interior-point method, and NLP solver DSL for C++23 and Python. The DSL automatically chooses the best solver based on the problem structure.

#include <print>

#include <sleipnir/optimization/problem.hpp>

int main() {
  // Find the x, y pair with the largest product for which x + 3y = 36
  slp::Problem<double> problem;

  auto x = problem.decision_variable();
  auto y = problem.decision_variable();

  problem.maximize(x * y);
  problem.subject_to(x + 3 * y == 36);
  problem.solve();

  // x = 18.0, y = 6.0
  std::println("x = {}, y = {}", x.value(), y.value());
}

#!/usr/bin/env python

from sleipnir.optimization import Problem


def main():
    # Find the x, y pair with the largest product for which x + 3y = 36
    problem = Problem()

    x, y = problem.decision_variable(2)

    problem.maximize(x * y)
    problem.subject_to(x + 3 * y == 36)
    problem.solve()

    # x = 18.0, y = 6.0
    print(f"x = {x.value()}, y = {y.value()}")


if __name__ == "__main__":
    main()

Sleipnir supports easy cross-compilation via CMake toolchain files, provides good performance by default, and contains clean reference implementations of various solvers with links to explanatory material.

The C++ API also supports arbitrary scalar types, so users can specify higher precision floating-point types at the cost of speed.

Install

The following platforms are supported:

  • Windows
  • Linux
    • OS: Ubuntu 24.04
    • Runtime: GCC 14 libstdc++ (run sudo apt install g++-14)
  • macOS
    • OS: macOS 14.5
    • Runtime: Apple Clang 16.0.0 libc++ from Xcode 16.2 (run xcode-select --install)

To use Sleipnir within a CMake project, add the following to CMakeLists.txt:

include(FetchContent)

FetchContent_Declare(
    Sleipnir
    GIT_REPOSITORY https://github.com/SleipnirGroup/Sleipnir.git
    GIT_TAG main
    EXCLUDE_FROM_ALL
    SYSTEM
)
FetchContent_MakeAvailable(Sleipnir)

target_link_libraries(MyApp PUBLIC Sleipnir::Sleipnir)

To use Sleipnir in Python, install sleipnirgroup-jormungandr from PyPI:

pip install sleipnirgroup-jormungandr

If necessary, follow these instructions to build from source.

Docs

See the C++ API docs, Python API docs, and usage docs.

Examples

See the examples folder, C++ optimization unit tests, and Python optimization unit tests.

Benchmarks

See the benchmarks folder.

Contributing

See the contributing docs.

Project links

Data verified by PyPI on Aug 6, 2026
Data provided by the project maintainers, verified at the time the release was uploaded to PyPI.

Key dates

PyPI data
Data sourced directly from PyPI's database.
  • Released:
Newer release available (0.6.6)

1 maintainer

PyPI data
Data sourced directly from PyPI's database.
Avatar for calcmogul from gravatar.com calcmogul

License expression

BSD-3-Clause
View SPDX License List

Requires

Python >=3.12

Report project as malware

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

sleipnirgroup_jormungandr-0.6.5.tar.gz (129.8 kB view details)

Uploaded Source

Built Distributions

If you're not sure about the file name format, learn more about wheel file names.

sleipnirgroup_jormungandr-0.6.5-cp312-abi3-win_arm64.whl (897.3 kB view details)

Uploaded CPython 3.12+Windows ARM64

sleipnirgroup_jormungandr-0.6.5-cp312-abi3-win_amd64.whl (762.2 kB view details)

Uploaded CPython 3.12+Windows x86-64

sleipnirgroup_jormungandr-0.6.5-cp312-abi3-manylinux_2_39_x86_64.whl (528.5 kB view details)

Uploaded CPython 3.12+manylinux: glibc 2.39+ x86-64

sleipnirgroup_jormungandr-0.6.5-cp312-abi3-manylinux_2_39_aarch64.whl (483.7 kB view details)

Uploaded CPython 3.12+manylinux: glibc 2.39+ ARM64

sleipnirgroup_jormungandr-0.6.5-cp312-abi3-macosx_14_0_universal2.whl (989.6 kB view details)

Uploaded CPython 3.12+macOS 14.0+ universal2 (ARM64, x86-64)

File details

Details for the file sleipnirgroup_jormungandr-0.6.5.tar.gz.

File metadata

File hashes

Hashes for sleipnirgroup_jormungandr-0.6.5.tar.gz
Algorithm Hash digest
SHA256 4cff3f927fb977ccde17f7468286b4cdbaca2ba554baddb6cde33aae25a5c79a
MD5 7f2592124fbee6d7e0b9eff88c1d74dc
BLAKE2b-256 d3a096d2e52ad7ece932459b22a496bcc41c78afb297471aada3638d795e1fc7

See more details on using hashes here.

Provenance

The following attestation bundles were made for sleipnirgroup_jormungandr-0.6.5.tar.gz:

Publisher: python.yml on SleipnirGroup/Sleipnir

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

File details

Details for the file sleipnirgroup_jormungandr-0.6.5-cp312-abi3-win_arm64.whl.

File metadata

File hashes

Hashes for sleipnirgroup_jormungandr-0.6.5-cp312-abi3-win_arm64.whl
Algorithm Hash digest
SHA256 b087b4b0185d6c58332e2e4c25995bb202b4cac2ee7ae3347f79987c179c04ca
MD5 b39599a5587171e3dc017706c298ddb1
BLAKE2b-256 105e773b7fdebd81b43006f1efd3ec6e04a3b1ecb5e90e2298cb9864cbd15eb8

See more details on using hashes here.

Provenance

The following attestation bundles were made for sleipnirgroup_jormungandr-0.6.5-cp312-abi3-win_arm64.whl:

Publisher: python.yml on SleipnirGroup/Sleipnir

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

File details

Details for the file sleipnirgroup_jormungandr-0.6.5-cp312-abi3-win_amd64.whl.

File metadata

File hashes

Hashes for sleipnirgroup_jormungandr-0.6.5-cp312-abi3-win_amd64.whl
Algorithm Hash digest
SHA256 fdb0b1a8062f6779a6b0dc7fc4f2f05186fb7e15fefd28f02addaa323458edf9
MD5 8278c3655895343e175500201dcb4904
BLAKE2b-256 83a2a651686f756ec821624c98fc69365ec204f3dbfeca7b51ad4499f82acbb8

See more details on using hashes here.

Provenance

The following attestation bundles were made for sleipnirgroup_jormungandr-0.6.5-cp312-abi3-win_amd64.whl:

Publisher: python.yml on SleipnirGroup/Sleipnir

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

File details

Details for the file sleipnirgroup_jormungandr-0.6.5-cp312-abi3-manylinux_2_39_x86_64.whl.

File metadata

File hashes

Hashes for sleipnirgroup_jormungandr-0.6.5-cp312-abi3-manylinux_2_39_x86_64.whl
Algorithm Hash digest
SHA256 fc9b5f62babf5904378bef28eb5a5af005e71f106dade060e81b38f8984af4e7
MD5 2c3aa99adc8a4c77fcc3acc3a970ecf4
BLAKE2b-256 1e85020f7e1845400528de2077e7013856d07f6cfa3f8c53e5e788fc5417bf34

See more details on using hashes here.

Provenance

The following attestation bundles were made for sleipnirgroup_jormungandr-0.6.5-cp312-abi3-manylinux_2_39_x86_64.whl:

Publisher: python.yml on SleipnirGroup/Sleipnir

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

File details

Details for the file sleipnirgroup_jormungandr-0.6.5-cp312-abi3-manylinux_2_39_aarch64.whl.

File metadata

File hashes

Hashes for sleipnirgroup_jormungandr-0.6.5-cp312-abi3-manylinux_2_39_aarch64.whl
Algorithm Hash digest
SHA256 4307ec7ecd87e011b03a59823207d8d7d078c52598fdc765c640e70dc7e4c499
MD5 db7488f869922c683e4a07c8cd5daf8a
BLAKE2b-256 36d4ae419c69b199fb9085ebf3917a2f089db670bc6c08a4c8d44b9828d07b29

See more details on using hashes here.

Provenance

The following attestation bundles were made for sleipnirgroup_jormungandr-0.6.5-cp312-abi3-manylinux_2_39_aarch64.whl:

Publisher: python.yml on SleipnirGroup/Sleipnir

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

File details

Details for the file sleipnirgroup_jormungandr-0.6.5-cp312-abi3-macosx_14_0_universal2.whl.

File metadata

File hashes

Hashes for sleipnirgroup_jormungandr-0.6.5-cp312-abi3-macosx_14_0_universal2.whl
Algorithm Hash digest
SHA256 c1fb9a25fc224a3dfc5c096f9774de26acef91cf996a6562efc42e2bce184a6a
MD5 91ad9c80a1b765a6968a9a3a504eda06
BLAKE2b-256 6e08b9632ce37bd3863ad7ceba71043f101fc432b1d797e5f7697c30c7d6bf49

See more details on using hashes here.

Provenance

The following attestation bundles were made for sleipnirgroup_jormungandr-0.6.5-cp312-abi3-macosx_14_0_universal2.whl:

Publisher: python.yml on SleipnirGroup/Sleipnir

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Release history Release notifications | RSS feed

Pre-release

0.6.7.dev2

6 files

Pre-release

0.6.7.dev1

6 files

0.6.6

6 files

This release

0.6.5 This release

6 files

0.6.4

6 files

0.6.3

6 files

0.6.2

6 files

0.6.1

6 files

0.6.0

6 files

0.5.5

6 files

0.5.4

6 files

0.5.3

6 files

0.5.2

6 files

0.5.1

6 files

0.5.0

6 files

0.4.0

6 files

0.3.5

6 files

0.3.4

6 files

0.3.3

6 files

0.3.2

6 files

0.3.1

6 files

0.3.0

6 files

0.2.2

6 files

0.2.1

6 files

0.2.0

6 files

0.1.0

12 files

Anthropic, PBC Visionary sponsor Bloomberg Visionary sponsor Hudson River Trading Visionary sponsor Meta Visionary sponsor NVIDIA Visionary sponsor Microsoft Sustainability sponsor Depot Continuous Integration AWS Cloud computing and Security Sponsor Datadog Monitoring Fastly CDN Google Download Analytics Sentry Error logging StatusPage Status page