diff --git a/.github/workflows/regression_tests.yml b/.github/workflows/regression_tests.yml
index 08a67907..ebfd4b64 100644
--- a/.github/workflows/regression_tests.yml
+++ b/.github/workflows/regression_tests.yml
@@ -1,29 +1,33 @@
+# .github/workflows/regression_tests.yml
 name: Regression Tests
 
 on:
   pull_request:
-    branches: [ main ]
+    branches:
+      - main
 
 jobs:
-  Regression-Test:
-    runs-on: ubuntu-latest
+  regression_tests:
+    name: regression_tests
+    runs-on: ubuntu-20.04
     
     steps:
     - uses: actions/checkout@v3
       with:
+        lfs: true
         fetch-depth: 0 # This ensures we can checkout main branch too
     
-    - name: Set up Python
-      uses: actions/setup-python@v4
+    - uses: actions/setup-python@v4
       with:
-        python-version: '3.x'
+        python-version: '3.10'
+        architecture: 'x64'
     
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install -r requirements.txt
+        pip install -e ".[dev]"
     
-    - name: Run regression tests on PR branch
+    - name: Run benchmarks on PR branch
       run: |
         python tests/regression_test_runner.py
     
@@ -41,20 +45,17 @@ jobs:
         git checkout -
     
     - name: Comment PR
-      uses: peter-evans/create-or-update-comment@v2
       if: github.event.pull_request.base.ref == 'main'
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      uses: actions/github-script@v7
       with:
-        issue-number: ${{ github.event.pull_request.number }}
-        body: |
-          ## Regression Test Results
-          ```
-          $(cat regression_test_report.txt)
-          ```
-    
-    - name: Save regression test results
-      uses: actions/upload-artifact@v3
-      with:
-        name: regression-test-results
-        path: tests/regression_test_results.json
\ No newline at end of file
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        script: |
+          const fs = require('fs');
+          const TestReport = fs.readFileSync('regression_test_report.txt', 'utf8');
+          
+          await github.rest.issues.createComment({
+            issue_number: context.issue.number,
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            body: `## Regression Test Results\n\`\`\`\n${TestReport}\n\`\`\``
+          });
\ No newline at end of file
diff --git a/.github/workflows/update_regression_baseline.yml b/.github/workflows/update_regression_baseline.yml
new file mode 100644
index 00000000..19c92f2c
--- /dev/null
+++ b/.github/workflows/update_regression_baseline.yml
@@ -0,0 +1,37 @@
+# .github/workflows/regression_tests.yml
+name: Regression Tests
+
+on:
+  workflow_dispatch:
+
+jobs:
+  regression_tests:
+    name: regression_tests
+    runs-on: ubuntu-20.04
+    
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        lfs: true
+        fetch-depth: 0 # This ensures we can checkout main branch too
+    
+    - uses: actions/setup-python@v4
+      with:
+        python-version: '3.10'
+        architecture: 'x64'
+    
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -e ".[dev]"
+    
+    - name: Run benchmarks on PR branch
+      run: |
+        python tests/regression_test_runner.py
+    
+
+    - name: Save new regression baseline
+      uses: actions/upload-artifact@v3
+      with:
+        name: regression-test-results
+        path: tests/regression_test_results.json
\ No newline at end of file
diff --git a/tests/regression_test_results.json b/tests/regression_test_results.json
index 8484c477..40925f57 100644
--- a/tests/regression_test_results.json
+++ b/tests/regression_test_results.json
@@ -1,4 +1,9 @@
 {
-  "module.example_function_1": 0.0003229847801849246,
-  "module.example_function_2": 0.0011760416850447656
+  "module.test_runtime1": 1.0000774711370468,
+  "module.test_runtime2": 1.0000772399362177,
+  "module.test_runtime3": 1.000094958813861,
+  "module.test_runtime4": 1.0000748871825635,
+  "module.test_runtime5": 1.0000761719420552,
+  "module.test_runtime6": 1.0001780251041055,
+  "module.test_runtime7": 1.0000949839595705
 }
\ No newline at end of file
diff --git a/tests/regression_test_runner.py b/tests/regression_test_runner.py
index c02e6df9..bc0e5f5b 100644
--- a/tests/regression_test_runner.py
+++ b/tests/regression_test_runner.py
@@ -12,17 +12,17 @@ def load_module(file_path):
     return module
 
 def get_test_functions(module):
-    """Get all functions in the module (assumes they are test functions)."""
-    return [
-        value for value in vars(module).values() if callable(value)
-    ]
+    """Get all functions in the module that start with test."""
+    is_test = lambda value: callable(value) and value.__name__.startswith("test")
+    return [value for value in vars(module).values() if is_test(value)]
 
 def run_benchmarks(functions_to_test):
     """Run benchmarks for the specified functions."""
     results = {}
     for func in functions_to_test:
+        print(f"Running benchmark for {func.__name__}...")
         # Run each function 1000 times and take the average
-        time_taken = timeit.timeit(lambda: func(), number=1000) / 1000
+        time_taken = timeit.timeit(lambda: func(), number=1)
         # Use the function's qualified name (module.function) as the key
         results[f"{func.__module__}.{func.__name__}"] = time_taken
     return results
@@ -60,8 +60,8 @@ def compare_results(base_results, new_results):
 
 if __name__ == "__main__":
     regression_test_file = 'tests/test_regression.py'
-    output_file = 'tests/benchmark_results.json'
-    base_results_file = 'tests/benchmark_results.json' if Path('tests/benchmark_results.json').exists() else None
+    output_file = 'tests/regression_test_results.json'
+    base_results_file = 'tests/regression_test_results.json' if Path('tests/regression_test_results.json').exists() else None
     
     # Load the regression test module
     test_module = load_module(regression_test_file)
diff --git a/tests/test_regression.py b/tests/test_regression.py
index 5637941d..b3364555 100644
--- a/tests/test_regression.py
+++ b/tests/test_regression.py
@@ -1,14 +1,103 @@
-# your_module.py
+# This file is part of Jaxley, a differentiable neuroscience simulator. Jaxley is
+# licensed under the Apache License Version 2.0, see <https://www.apache.org/licenses/>
+
+import os
 import time
 
-def example_function_1():
-    """Example function that does some work."""
-    result = 0
-    for i in range(1000):
-        result += i
-    return result
-
-def example_function_2():
-    """Another example function with different performance characteristics."""
-    time.sleep(0.001)  # Simulate some work
-    return sum(range(1000))
\ No newline at end of file
+import numpy as np
+import pytest
+from jax import jit
+
+import jaxley as jx
+from jaxley.channels import HH
+from jaxley.connect import sparse_connect
+from jaxley.synapses import IonotropicSynapse
+
+# mark all tests as runtime tests in this file
+pytestmark = pytest.mark.runtime
+
+def build_net(num_cells, artificial=True, connect=True, connection_prob=0.0):
+    _ = np.random.seed(1)  # For sparse connectivity matrix.
+
+    if artificial:
+        comp = jx.Compartment()
+        branch = jx.Branch(comp, 2)
+        depth = 3
+        parents = [-1] + [b // 2 for b in range(0, 2**depth - 2)]
+        cell = jx.Cell(branch, parents=parents)
+    else:
+        dirname = os.path.dirname(__file__)
+        fname = os.path.join(dirname, "swc_files", "morph.swc")
+        cell = jx.read_swc(fname, nseg=4)
+    net = jx.Network([cell for _ in range(num_cells)])
+
+    # Channels.
+    net.insert(HH())
+
+    # Synapses.
+    if connect:
+        sparse_connect(
+            net.cell("all"), net.cell("all"), IonotropicSynapse(), connection_prob
+        )
+
+    # Recordings.
+    net[0, 1, 0].record(verbose=False)
+
+    # Trainables.
+    net.make_trainable("radius", verbose=False)
+    params = net.get_parameters()
+
+    net.to_jax()
+    return net, params
+
+def setup_runtime(
+    num_cells: int,
+    artificial: bool,
+    connect: bool,
+    connection_prob: float,
+    voltage_solver: str,
+    identifier: int,
+):
+    delta_t = 0.025
+    t_max = 100.0
+
+    net, params = build_net(
+        num_cells,
+        artificial=artificial,
+        connect=connect,
+        connection_prob=connection_prob,
+    )
+
+    def simulate(params):
+        return jx.integrate(
+            net,
+            params=params,
+            t_max=t_max,
+            delta_t=delta_t,
+            voltage_solver=voltage_solver,
+        )
+
+    jitted_simulate = jit(simulate)
+
+    _ = jitted_simulate(params).block_until_ready()
+
+    params[0]["radius"] = params[0]["radius"].at[0].set(0.5)
+    _ = jitted_simulate(params).block_until_ready()
+
+def test_runtime1():
+    setup_runtime(1, False, False, 0.0, "jaxley.stone", 0)
+
+def test_runtime2():
+    setup_runtime(1, False, False, 0.0, "jax.sparse", 1)
+
+def test_runtime3():
+    setup_runtime(10, False, True, 0.1, "jaxley.stone", 2)
+
+def test_runtime4():
+    setup_runtime(10, False, True, 0.1, "jax.sparse", 3)
+
+def test_runtime5():
+    setup_runtime(1000, True, True, 0.001, "jaxley.stone", 4)
+
+def test_runtime6():
+    setup_runtime(1000, True, True, 0.001, "jax.sparse", 5)
\ No newline at end of file