diff --git a/datablock.py b/datablock.py
index 3cee71e60..388cea62c 100644
--- a/datablock.py
+++ b/datablock.py
@@ -8,7 +8,7 @@
 import libtbx
 
 import dxtbx.imageset
-import dxtbx.model.compare
+import dxtbx.model
 from dxtbx.format.FormatMultiImage import FormatMultiImage
 from dxtbx.format.image import ImageBool, ImageDouble
 from dxtbx.format.Registry import get_format_class_for_file
@@ -930,116 +930,3 @@ def __call__(self, a, b):
             fixed_rotation_tolerance=self.fixed_rotation_tolerance,
             setting_rotation_tolerance=self.setting_rotation_tolerance,
         )
-
-
-class BeamDiff:
-    def __init__(
-        self,
-        wavelength_tolerance=1e-6,
-        direction_tolerance=1e-6,
-        polarization_normal_tolerance=1e-6,
-        polarization_fraction_tolerance=1e-6,
-    ):
-        warnings.warn(
-            "dxtbx.datablock.BeamDiff is deprecated. "
-            "Use dxtbx.model.compare.beam_diff instead",
-            DeprecationWarning,
-            stacklevel=2,
-        )
-        self.wavelength_tolerance = wavelength_tolerance
-        self.direction_tolerance = direction_tolerance
-        self.polarization_normal_tolerance = polarization_normal_tolerance
-        self.polarization_fraction_tolerance = polarization_fraction_tolerance
-
-    def __call__(self, a, b):
-        return dxtbx.model.compare.beam_diff(
-            a,
-            b,
-            wavelength_tolerance=self.wavelength_tolerance,
-            direction_tolerance=self.direction_tolerance,
-            polarization_normal_tolerance=self.polarization_normal_tolerance,
-            polarization_fraction_tolerance=self.polarization_fraction_tolerance,
-        ).split("\n")
-
-
-class DetectorDiff:
-    def __init__(
-        self, fast_axis_tolerance=1e-6, slow_axis_tolerance=1e-6, origin_tolerance=1e-6
-    ):
-        warnings.warn(
-            "dxtbx.datablock.DetectorDiff is deprecated. "
-            "Use dxtbx.model.compare.detector_diff instead",
-            DeprecationWarning,
-            stacklevel=2,
-        )
-        self.fast_axis_tolerance = fast_axis_tolerance
-        self.slow_axis_tolerance = slow_axis_tolerance
-        self.origin_tolerance = origin_tolerance
-
-    def __call__(self, a, b):
-        return dxtbx.model.compare.detector_diff(
-            a,
-            b,
-            fast_axis_tolerance=self.fast_axis_tolerance,
-            slow_axis_tolerance=self.slow_axis_tolerance,
-            origin_tolerance=self.origin_tolerance,
-        ).split("\n")
-
-
-class GoniometerDiff:
-    def __init__(
-        self,
-        rotation_axis_tolerance=1e-6,
-        fixed_rotation_tolerance=1e-6,
-        setting_rotation_tolerance=1e-6,
-    ):
-        warnings.warn(
-            "dxtbx.datablock.GoniometerDiff is deprecated. "
-            "Use dxtbx.model.compare.goniometer_diff instead",
-            DeprecationWarning,
-            stacklevel=2,
-        )
-        self.rotation_axis_tolerance = rotation_axis_tolerance
-        self.fixed_rotation_tolerance = fixed_rotation_tolerance
-        self.setting_rotation_tolerance = setting_rotation_tolerance
-
-    def __call__(self, a, b):
-        return dxtbx.model.compare.goniometer_diff(
-            a,
-            b,
-            rotation_axis_tolerance=self.rotation_axis_tolerance,
-            fixed_rotation_tolerance=self.fixed_rotation_tolerance,
-            setting_rotation_tolerance=self.setting_rotation_tolerance,
-        ).split("\n")
-
-
-class ScanDiff:
-    def __init__(self, scan_tolerance=0.03):
-        warnings.warn(
-            "dxtbx.datablock.ScanDiff is deprecated. "
-            "Use dxtbx.model.compare.scan_diff instead",
-            DeprecationWarning,
-            stacklevel=2,
-        )
-        self.scan_tolerance = scan_tolerance
-
-    def __call__(self, a, b):
-        return dxtbx.model.compare.scan_diff(
-            a, b, scan_tolerance=self.scan_tolerance
-        ).split("\n")
-
-
-class SequenceDiff:
-    def __init__(self, tolerance):
-        warnings.warn(
-            "dxtbx.datablock.SequenceDiff is deprecated. "
-            "Use dxtbx.model.compare.sequence_diff instead",
-            DeprecationWarning,
-            stacklevel=2,
-        )
-        self._tolerance = tolerance
-
-    def __call__(self, sequence1, sequence2):
-        return dxtbx.model.compare.sequence_diff(
-            sequence1, sequence2, tolerance=self._tolerance
-        ).split("\n")
diff --git a/model/experiment_list.py b/model/experiment_list.py
index 0aee83bc9..5cc0aa286 100644
--- a/model/experiment_list.py
+++ b/model/experiment_list.py
@@ -18,7 +18,6 @@
     DataBlockTemplateImporter,
     DetectorComparison,
     GoniometerComparison,
-    SequenceDiff,
 )
 from dxtbx.format.Format import Format
 from dxtbx.format.FormatMultiImage import FormatMultiImage
@@ -59,7 +58,6 @@
     "DetectorComparison",
     "ExperimentListFactory",
     "GoniometerComparison",
-    "SequenceDiff",
 ]