diff --git a/spacy/__main__.py b/spacy/__main__.py
index 0ec96e4a1..99d6b116c 100644
--- a/spacy/__main__.py
+++ b/spacy/__main__.py
@@ -7,7 +7,7 @@ if __name__ == '__main__':
     import plac
     import sys
     from spacy.cli import download, link, info, package, train, convert, model
-    from spacy.cli import profile, evaluate
+    from spacy.cli import profile, evaluate, validate
     from spacy.util import prints
 
     commands = {
@@ -20,6 +20,7 @@ if __name__ == '__main__':
         'package': package,
         'model': model,
         'profile': profile,
+        'validate': validate
     }
     if len(sys.argv) == 1:
         prints(', '.join(commands), title="Available commands", exits=1)
diff --git a/spacy/cli/__init__.py b/spacy/cli/__init__.py
index ebe185f24..2595dcc03 100644
--- a/spacy/cli/__init__.py
+++ b/spacy/cli/__init__.py
@@ -7,3 +7,4 @@ from .train import train
 from .evaluate import evaluate
 from .convert import convert
 from .model import model
+from .validate import validate
diff --git a/spacy/cli/validate.py b/spacy/cli/validate.py
new file mode 100644
index 000000000..68c8c5053
--- /dev/null
+++ b/spacy/cli/validate.py
@@ -0,0 +1,123 @@
+# coding: utf8
+from __future__ import unicode_literals
+
+import requests
+import pkg_resources
+from pathlib import Path
+
+from ..compat import path2str
+from ..util import prints, get_data_path, read_json
+from .. import about
+
+
+def validate(cmd):
+    """Validate that the currently installed version of spaCy is compatible
+    with the installed models. Should be run after `pip install -U spacy`.
+    """
+    r = requests.get(about.__compatibility__)
+    if r.status_code != 200:
+        prints("Couldn't fetch compatibility table.",
+               title="Server error (%d)" % r.status_code, exits=1)
+    compat = r.json()['spacy']
+    all_models = set()
+    for spacy_v, models in dict(compat).items():
+        all_models.update(models.keys())
+        for model, model_vs in models.items():
+            compat[spacy_v][model] = [reformat_version(v) for v in model_vs]
+
+    current_compat = compat[about.__version__]
+    model_links = get_model_links(current_compat)
+    model_pkgs = get_model_pkgs(current_compat, all_models)
+    incompat_links = {l for l, d in model_links.items() if not d['compat']}
+    incompat_models = {d['name'] for _, d in model_pkgs.items() if not d['compat']}
+    incompat_models.update([d['name'] for _, d in model_links.items() if not d['compat']])
+    na_models = [m for m in incompat_models if m not in current_compat]
+    update_models = [m for m in incompat_models if m in current_compat]
+
+    prints(path2str(Path(__file__).parent.parent),
+           title="Installed models (spaCy v{})".format(about.__version__))
+    if model_links or model_pkgs:
+        print(get_row('TYPE', 'NAME', 'MODEL', 'VERSION', ''))
+        for name, data in model_pkgs.items():
+            print(get_model_row(current_compat, name, data, 'package'))
+        for name, data in model_links.items():
+            print(get_model_row(current_compat, name, data, 'link'))
+    else:
+        prints("No models found in your current environment.", exits=0)
+
+    if update_models:
+        cmd = '    python -m spacy download {}'
+        print("\n    Use the following commands to update the model packages:")
+        print('\n'.join([cmd.format(pkg) for pkg in update_models]))
+
+    if na_models:
+        prints("The following models are not available for spaCy v{}: {}"
+               .format(about.__version__, ', '.join(na_models)))
+
+    if incompat_links:
+        prints("You may also want to overwrite the incompatible links using "
+               "the `spacy link` command with `--force`, or remove them from "
+               "the data directory. Data path: {}"
+               .format(path2str(get_data_path())))
+
+
+def get_model_links(compat):
+    links = {}
+    data_path = get_data_path()
+    if data_path:
+        models = [p for p in data_path.iterdir() if is_model_path(p)]
+        for model in models:
+            meta_path = Path(model) / 'meta.json'
+            if not meta_path.exists():
+                continue
+            meta = read_json(meta_path)
+            link = model.parts[-1]
+            name = meta['lang'] + '_' + meta['name']
+            links[link] = {'name': name, 'version': meta['version'],
+                           'compat': is_compat(compat, name, meta['version'])}
+    return links
+
+
+def get_model_pkgs(compat, all_models):
+    pkgs = {}
+    for pkg_name, pkg_data in pkg_resources.working_set.by_key.items():
+        package = pkg_name.replace('-', '_')
+        if package in all_models:
+            version = pkg_data.version
+            pkgs[pkg_name] = {'name': package, 'version': version,
+                              'compat': is_compat(compat, package, version)}
+    return pkgs
+
+
+def get_model_row(compat, name, data, type='package'):
+    tpl_row = '    {:<10}' + ('  {:<20}' * 4)
+    tpl_red = '\x1b[38;5;1m{}\x1b[0m'
+    tpl_green = '\x1b[38;5;2m{}\x1b[0m'
+    if data['compat']:
+        comp = tpl_green.format('✔')
+        version = tpl_green.format(data['version'])
+    else:
+        comp = '--> {}'.format(compat.get(data['name'], ['n/a'])[0])
+        version = tpl_red.format(data['version'])
+    return get_row(type, name, data['name'], version, comp)
+
+
+def get_row(*args):
+    tpl_row = '    {:<10}' + ('  {:<20}' * 4)
+    return tpl_row.format(*args)
+
+
+def is_model_path(model_path):
+    exclude = ['cache', 'pycache', '__pycache__']
+    name = model_path.parts[-1]
+    return model_path.is_dir() and name not in exclude and not name.startswith('.')
+
+
+def is_compat(compat, name, version):
+    return name in compat and version in compat[name]
+
+
+def reformat_version(version):
+    if version.endswith('-alpha'):
+        return version.replace('-alpha', 'a0')
+    return version.replace('-alpha', 'a')