diff --git a/.formatter.exs b/.formatter.exs
new file mode 100644
index 0000000..d2cda26
--- /dev/null
+++ b/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..1c7384d
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,68 @@
+name: Build precompiled NIFs
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - '*'
+
+jobs:
+  build_release:
+    name: NIF ${{ matrix.nif }} - ${{ matrix.job.target }} (${{ matrix.job.os }})
+    runs-on: ${{ matrix.job.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        nif: ["2.16", "2.15"]
+        job:
+          - { target: arm-unknown-linux-gnueabihf , os: ubuntu-20.04 , use-cross: true }
+          - { target: aarch64-unknown-linux-gnu   , os: ubuntu-20.04 , use-cross: true }
+          - { target: aarch64-unknown-linux-musl  , os: ubuntu-20.04 , use-cross: true }
+          - { target: aarch64-apple-darwin        , os: macos-11      }
+          - { target: riscv64gc-unknown-linux-gnu , os: ubuntu-20.04 , use-cross: true }
+          - { target: x86_64-apple-darwin         , os: macos-11      }
+          - { target: x86_64-unknown-linux-gnu    , os: ubuntu-20.04  }
+          - { target: x86_64-unknown-linux-musl   , os: ubuntu-20.04 , use-cross: true }
+          - { target: x86_64-pc-windows-gnu       , os: windows-2019  }
+          - { target: x86_64-pc-windows-msvc      , os: windows-2019  }
+
+    steps:
+    - name: Checkout source code
+      uses: actions/checkout@v3
+
+    - name: Extract project version
+      shell: bash
+      run: |
+        # Get the project version from mix.exs
+        echo "PROJECT_VERSION=$(sed -n 's/^  @version "\(.*\)"/\1/p' mix.exs | head -n1)" >> $GITHUB_ENV
+
+    - name: Install Rust toolchain
+      uses: dtolnay/rust-toolchain@stable
+      with:
+        toolchain: stable
+        target: ${{ matrix.job.target }}
+
+    - name: Build the project
+      id: build-crate
+      uses: philss/rustler-precompiled-action@v1.0.1
+      with:
+        project-name: arpabex_native
+        project-version: ${{ env.PROJECT_VERSION }}
+        target: ${{ matrix.job.target }}
+        nif-version: ${{ matrix.nif }}
+        use-cross: ${{ matrix.job.use-cross }}
+        project-dir: "native/arpabex_native"
+
+    - name: Artifact upload
+      uses: actions/upload-artifact@v3
+      with:
+        name: ${{ steps.build-crate.outputs.file-name }}
+        path: ${{ steps.build-crate.outputs.file-path }}
+
+    - name: Publish archives and packages
+      uses: softprops/action-gh-release@v1
+      with:
+        files: |
+          ${{ steps.build-crate.outputs.file-path }}
+      if: startsWith(github.ref, 'refs/tags/')
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..82ba640
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,26 @@
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+arpabex-*.tar
+
+# Temporary files, for example, from tests.
+/tmp/
diff --git a/lib/arpabex.ex b/lib/arpabex.ex
new file mode 100644
index 0000000..480d7b3
--- /dev/null
+++ b/lib/arpabex.ex
@@ -0,0 +1,16 @@
+defmodule Arpabex do
+  @moduledoc """
+  Documentation for `Arpabex`.
+  """
+
+  @doc """
+  Generate phonemes from string
+
+  ## Examples
+
+      iex> Arpabex.phonemes_strs("notaword")
+      ["N", "AA1", "T", "AH0", "W", "ER0", "D"]
+
+  """
+  def phoneme_strs(string), do: Arpabex.Native.phoneme_strs(string)
+end
diff --git a/lib/arpabex/native.ex b/lib/arpabex/native.ex
new file mode 100644
index 0000000..63058da
--- /dev/null
+++ b/lib/arpabex/native.ex
@@ -0,0 +1,14 @@
+defmodule Arpabex.Native do
+  @moduledoc false
+  version = Mix.Project.config()[:version]
+  github_url = Mix.Project.config()[:package][:source_url]
+
+  use RustlerPrecompiled,
+    otp_app: :arpabex,
+    crate: "arpabex_native",
+    base_url: "#{github_url}/releases/download/v#{version}",
+    force_build: System.get_env("ARPABEX_BUILD") in ["1", "true"],
+    version: version
+
+  def phoneme_strs(_string), do: :erlang.nif_error(:nif_not_loaded)
+end
diff --git a/mix.exs b/mix.exs
new file mode 100644
index 0000000..417740e
--- /dev/null
+++ b/mix.exs
@@ -0,0 +1,57 @@
+defmodule Arpabex.MixProject do
+  use Mix.Project
+
+  @version "0.4.0"
+  @source_url "https://github.com/pejrich/Arpabex"
+
+  def project do
+    [
+      app: :arpabex,
+      description: "Elixir NIF wrapper of Rust Arpabet phoneme prediction library",
+      package: [
+        name: "Arpabex",
+        licenses: ["MIT"],
+        links: %{"GitHub" => @source_url, "HexDocs" => "https://hexdocs.pm/arpabex/Arpabex.html"},
+        source_url: @source_url,
+        files:
+          ~w(lib .formatter.exs mix.exs README* LICENSE*
+                   CHANGELOG* checksum-*.exs native/arpabex_native/src native/arpabex_native/.cargo native/arpabex_native/Cargo.toml)
+      ],
+      docs: docs(),
+      version: @version,
+      elixir: "~> 1.16",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  defp docs do
+    [
+      main: "Arpabex",
+      name: "Arpabex",
+      source_ref: "v#{@version}",
+      canonical: "https://hexdocs.pm/arpabex",
+      source_url: @source_url,
+      extras: ["README.md", "CHANGELOG.md", "LICENSE"]
+    ]
+  end
+
+  # Run "mix help compile.app" to learn about applications.
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    [
+      {:ex_doc, "~> 0.14", only: :dev, runtime: false},
+      {:rustler, ">= 0.0.0", optional: true},
+      {:rustler_precompiled, "~> 0.7.0"},
+      {:benchee, "~> 1.1", only: [:dev, :test]}
+      # {:dep_from_hexpm, "~> 0.3.0"},
+      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
+    ]
+  end
+end
diff --git a/mix.lock b/mix.lock
new file mode 100644
index 0000000..5fb88f3
--- /dev/null
+++ b/mix.lock
@@ -0,0 +1,16 @@
+%{
+  "benchee": {:hex, :benchee, "1.3.0", "f64e3b64ad3563fa9838146ddefb2d2f94cf5b473bdfd63f5ca4d0657bf96694", [:mix], [{:deep_merge, "~> 1.0", [hex: :deep_merge, repo: "hexpm", optional: false]}, {:statistex, "~> 1.0", [hex: :statistex, repo: "hexpm", optional: false]}, {:table, "~> 0.1.0", [hex: :table, repo: "hexpm", optional: true]}], "hexpm", "34f4294068c11b2bd2ebf2c59aac9c7da26ffa0068afdf3419f1b176e16c5f81"},
+  "castore": {:hex, :castore, "1.0.5", "9eeebb394cc9a0f3ae56b813459f990abb0a3dedee1be6b27fdb50301930502f", [:mix], [], "hexpm", "8d7c597c3e4a64c395980882d4bca3cebb8d74197c590dc272cfd3b6a6310578"},
+  "deep_merge": {:hex, :deep_merge, "1.0.0", "b4aa1a0d1acac393bdf38b2291af38cb1d4a52806cf7a4906f718e1feb5ee961", [:mix], [], "hexpm", "ce708e5f094b9cd4e8f2be4f00d2f4250c4095be93f8cd6d018c753894885430"},
+  "earmark_parser": {:hex, :earmark_parser, "1.4.39", "424642f8335b05bb9eb611aa1564c148a8ee35c9c8a8bba6e129d51a3e3c6769", [:mix], [], "hexpm", "06553a88d1f1846da9ef066b87b57c6f605552cfbe40d20bd8d59cc6bde41944"},
+  "ex_doc": {:hex, :ex_doc, "0.31.1", "8a2355ac42b1cc7b2379da9e40243f2670143721dd50748bf6c3b1184dae2089", [:mix], [{:earmark_parser, "~> 1.4.39", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.1", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "3178c3a407c557d8343479e1ff117a96fd31bafe52a039079593fb0524ef61b0"},
+  "jason": {:hex, :jason, "1.4.1", "af1504e35f629ddcdd6addb3513c3853991f694921b1b9368b0bd32beb9f1b63", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "fbb01ecdfd565b56261302f7e1fcc27c4fb8f32d56eab74db621fc154604a7a1"},
+  "makeup": {:hex, :makeup, "1.1.1", "fa0bc768698053b2b3869fa8a62616501ff9d11a562f3ce39580d60860c3a55e", [:mix], [{:nimble_parsec, "~> 1.2.2 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "5dc62fbdd0de44de194898b6710692490be74baa02d9d108bc29f007783b0b48"},
+  "makeup_elixir": {:hex, :makeup_elixir, "0.16.1", "cc9e3ca312f1cfeccc572b37a09980287e243648108384b97ff2b76e505c3555", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "e127a341ad1b209bd80f7bd1620a15693a9908ed780c3b763bccf7d200c767c6"},
+  "makeup_erlang": {:hex, :makeup_erlang, "0.1.4", "29563475afa9b8a2add1b7a9c8fb68d06ca7737648f28398e04461f008b69521", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "f4ed47ecda66de70dd817698a703f8816daa91272e7e45812469498614ae8b29"},
+  "nimble_parsec": {:hex, :nimble_parsec, "1.4.0", "51f9b613ea62cfa97b25ccc2c1b4216e81df970acd8e16e8d1bdc58fef21370d", [:mix], [], "hexpm", "9c565862810fb383e9838c1dd2d7d2c437b3d13b267414ba6af33e50d2d1cf28"},
+  "rustler": {:hex, :rustler, "0.30.0", "cefc49922132b072853fa9b0ca4dc2ffcb452f68fb73b779042b02d545e097fb", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:toml, "~> 0.6", [hex: :toml, repo: "hexpm", optional: false]}], "hexpm", "9ef1abb6a7dda35c47cfc649e6a5a61663af6cf842a55814a554a84607dee389"},
+  "rustler_precompiled": {:hex, :rustler_precompiled, "0.7.1", "ecadf02cc59a0eccbaed6c1937303a5827fbcf60010c541595e6d3747d3d0f9f", [:mix], [{:castore, "~> 0.1 or ~> 1.0", [hex: :castore, repo: "hexpm", optional: false]}, {:rustler, "~> 0.23", [hex: :rustler, repo: "hexpm", optional: true]}], "hexpm", "b9e4657b99a1483ea31502e1d58c464bedebe9028808eda45c3a429af4550c66"},
+  "statistex": {:hex, :statistex, "1.0.0", "f3dc93f3c0c6c92e5f291704cf62b99b553253d7969e9a5fa713e5481cd858a5", [:mix], [], "hexpm", "ff9d8bee7035028ab4742ff52fc80a2aa35cece833cf5319009b52f1b5a86c27"},
+  "toml": {:hex, :toml, "0.7.0", "fbcd773caa937d0c7a02c301a1feea25612720ac3fa1ccb8bfd9d30d822911de", [:mix], [], "hexpm", "0690246a2478c1defd100b0c9b89b4ea280a22be9a7b313a8a058a2408a2fa70"},
+}
diff --git a/native/arpabex_native/.cargo/config.toml b/native/arpabex_native/.cargo/config.toml
new file mode 100644
index 0000000..8bd97f9
--- /dev/null
+++ b/native/arpabex_native/.cargo/config.toml
@@ -0,0 +1,26 @@
+[target.x86_64-apple-darwin]
+rustflags = [
+  "-C", "link-arg=-undefined",
+  "-C", "link-arg=dynamic_lookup",
+]
+
+[target.aarch64-apple-darwin]
+rustflags = [
+  "-C", "link-arg=-undefined",
+  "-C", "link-arg=dynamic_lookup",
+]
+
+# See https://github.com/rust-lang/rust/issues/59302
+[target.x86_64-unknown-linux-musl]
+rustflags = [
+  "-C", "target-feature=-crt-static"
+]
+
+# See https://github.com/rust-lang/rust/issues/59302
+[target.aarch64-unknown-linux-musl]
+rustflags = [
+  "-C", "target-feature=-crt-static"
+]
+
+[profile.release]
+lto = true
\ No newline at end of file
diff --git a/native/arpabex_native/.gitignore b/native/arpabex_native/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/native/arpabex_native/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/native/arpabex_native/Cargo.lock b/native/arpabex_native/Cargo.lock
new file mode 100644
index 0000000..f0fdf69
--- /dev/null
+++ b/native/arpabex_native/Cargo.lock
@@ -0,0 +1,672 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "adler"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
+
+[[package]]
+name = "aho-corasick"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2969dcb958b36655471fc61f7e416fa76033bdd4bfed0678d8fee1e2d07a1f0"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "arpabet"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d7bcdb435d536dfa262abef687e3e0517da921cb56bda1d56c6a03e1d7b8d16"
+dependencies = [
+ "arpabet_cmudict",
+ "arpabet_parser",
+ "arpabet_types",
+]
+
+[[package]]
+name = "arpabet_cmudict"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "493246593f4f5b249ea42ff224e2e60655a305762959e45c788cca684b7b446f"
+dependencies = [
+ "arpabet_parser",
+ "arpabet_types",
+ "lazy_static",
+ "phf",
+ "phf_codegen",
+ "regex",
+]
+
+[[package]]
+name = "arpabet_parser"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1a5b409d512e07dfabce3cdd864470fa6bf51e8aa762eeee3265e359f0687a9"
+dependencies = [
+ "arpabet_types",
+ "lazy_static",
+ "regex",
+]
+
+[[package]]
+name = "arpabet_types"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae3a6e204a66085d5d06c76b16bb2218d496ee291a5a0fad221a9c53b08862e4"
+dependencies = [
+ "lazy_static",
+ "phf",
+ "regex",
+]
+
+[[package]]
+name = "arpabex_native"
+version = "0.1.0"
+dependencies = [
+ "grapheme_to_phoneme",
+ "once_cell",
+ "rustler",
+]
+
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+
+[[package]]
+name = "block-buffer"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
+dependencies = [
+ "generic-array",
+]
+
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "cpufeatures"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53fe5e26ff1b7aef8bca9c6080520cfb8d9333c7568e1829cef191a9723e5504"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "crc32fast"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b540bd8bc810d3885c6ea91e2018302f68baba2129ab3e88f32389ee9370880d"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "crypto-common"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+dependencies = [
+ "generic-array",
+ "typenum",
+]
+
+[[package]]
+name = "digest"
+version = "0.10.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
+dependencies = [
+ "block-buffer",
+ "crypto-common",
+]
+
+[[package]]
+name = "flate2"
+version = "1.0.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46303f565772937ffe1d394a4fac6f411c6013172fadde9dcdb1e147a086940e"
+dependencies = [
+ "crc32fast",
+ "miniz_oxide",
+]
+
+[[package]]
+name = "generic-array"
+version = "0.14.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
+dependencies = [
+ "typenum",
+ "version_check",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.1.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
+[[package]]
+name = "grapheme_to_phoneme"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1af33031ec99fd5585783e2caba8e017c01a9efb1318fed9fc9250420dd019f"
+dependencies = [
+ "arpabet",
+ "ndarray",
+ "ndarray-npy",
+]
+
+[[package]]
+name = "heck"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "libc"
+version = "0.2.153"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
+
+[[package]]
+name = "matrixmultiply"
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diff --git a/native/arpabex_native/Cargo.toml b/native/arpabex_native/Cargo.toml
new file mode 100644
index 0000000..328e8ad
--- /dev/null
+++ b/native/arpabex_native/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "arpabex_native"
+version = "0.1.0"
+authors = []
+edition = "2021"
+
+[lib]
+name = "arpabex_native"
+path = "src/lib.rs"
+crate-type = ["cdylib"]
+
+[dependencies]
+rustler = "0.30.0"
+grapheme_to_phoneme = "0.1.0"
+once_cell = "1.19.0"
\ No newline at end of file
diff --git a/native/arpabex_native/Cross.toml b/native/arpabex_native/Cross.toml
new file mode 100644
index 0000000..ea92ea7
--- /dev/null
+++ b/native/arpabex_native/Cross.toml
@@ -0,0 +1,4 @@
+[build.env]
+passthrough = [
+  "RUSTLER_NIF_VERSION"
+]
\ No newline at end of file
diff --git a/native/arpabex_native/README.md b/native/arpabex_native/README.md
new file mode 100644
index 0000000..93337e9
--- /dev/null
+++ b/native/arpabex_native/README.md
@@ -0,0 +1,20 @@
+# NIF for Elixir.Arpabex.Native
+
+## To build the NIF module:
+
+- Your NIF will now build along with your project.
+
+## To load the NIF:
+
+```elixir
+defmodule Arpabex.Native do
+  use Rustler, otp_app: :arpabex, crate: "arpabex_native"
+
+  # When your NIF is loaded, it will override this function.
+  def add(_a, _b), do: :erlang.nif_error(:nif_not_loaded)
+end
+```
+
+## Examples
+
+[This](https://github.com/rusterlium/NifIo) is a complete example of a NIF written in Rust.
diff --git a/native/arpabex_native/src/lib.rs b/native/arpabex_native/src/lib.rs
new file mode 100644
index 0000000..4ac7ed3
--- /dev/null
+++ b/native/arpabex_native/src/lib.rs
@@ -0,0 +1,16 @@
+extern crate grapheme_to_phoneme;
+use grapheme_to_phoneme::Model;
+use once_cell::sync::Lazy;
+use std::sync::Mutex;
+
+static MODEL: Lazy<Mutex<Model>> = Lazy::new(|| {
+    let model = Model::load_in_memory().unwrap();
+    Mutex::new(model)
+});
+
+#[rustler::nif]
+fn phoneme_strs(string: &str) -> Vec<&str> {
+    return MODEL.lock().unwrap().predict_phonemes_strs(string).unwrap();
+}
+
+rustler::init!("Elixir.Arpabex.Native", [phoneme_strs]);
diff --git a/priv/native/libarpabex_native.so b/priv/native/libarpabex_native.so
new file mode 100755
index 0000000..67da9c0
Binary files /dev/null and b/priv/native/libarpabex_native.so differ
diff --git a/test/arpabex_test.exs b/test/arpabex_test.exs
new file mode 100644
index 0000000..3743bc0
--- /dev/null
+++ b/test/arpabex_test.exs
@@ -0,0 +1,8 @@
+defmodule ArpabexTest do
+  use ExUnit.Case
+  doctest Arpabex
+
+  test "greets the world" do
+    assert Arpabex.hello() == :world
+  end
+end
diff --git a/test/test_helper.exs b/test/test_helper.exs
new file mode 100644
index 0000000..869559e
--- /dev/null
+++ b/test/test_helper.exs
@@ -0,0 +1 @@
+ExUnit.start()