diff --git a/HISTORY.md b/HISTORY.md
index fdaa14896..40d45a345 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -3,8 +3,17 @@
 
 ### main branch
 
+- Prompt caching for Anthropic models with `--cache-prompts`.
+  - Caches the system prompt, repo map and `/read-only` files.
+- Repo map recomputes less often in large/mono repos or when caching enabled.
+  - Use `--map-refresh <always|files|manual|auto>` to configure.
+- Improved cost estimate logic for caching.
 - Improved editing performance on Jupyter Notebook `.ipynb` files.
-- Work around litellm tokenizer bug for images.
+- Show which config yaml file is loaded with `--verbose`.
+- Bumped dependency versions.
+- Bugfix: properly load `.aider.models.metadata.json` data.
+- Bugfix: Using `--msg /ask ...` caused an exception.
+- Bugfix: litellm tokenizer bug for images.
 
 ### Aider v0.50.1
 
diff --git a/aider/args.py b/aider/args.py
index 71d42e34d..d1b6e581d 100644
--- a/aider/args.py
+++ b/aider/args.py
@@ -205,13 +205,13 @@ def get_parser(default_config_files, git_root):
         "--map-refresh",
         choices=["auto", "always", "files", "manual"],
         default="auto",
-        help="Control when the repo map is refreshed (default: auto)",
+        help="Control how often the repo map is refreshed (default: auto)",
     )
     group.add_argument(
         "--cache-prompts",
         action=argparse.BooleanOptionalAction,
         default=False,
-        help="Enable caching of prompts (forces map_refresh='files') (default: False)",
+        help="Enable caching of prompts (default: False)",
     )
     group.add_argument(
         "--max-chat-history-tokens",
diff --git a/aider/commands.py b/aider/commands.py
index 12f45be27..89fc52494 100644
--- a/aider/commands.py
+++ b/aider/commands.py
@@ -1017,7 +1017,7 @@ class Commands:
         except Exception as e:
             self.io.tool_error(f"Error processing clipboard content: {e}")
 
-    def cmd_read(self, args):
+    def cmd_read_only(self, args):
         "Add a file to the chat that is for reference, not to be edited"
         if not args.strip():
             self.io.tool_error("Please provide a filename to read.")
diff --git a/aider/main.py b/aider/main.py
index 193a4923d..161438c1a 100644
--- a/aider/main.py
+++ b/aider/main.py
@@ -507,7 +507,7 @@ def main(argv=None, input=None, output=None, force_git_root=None, return_coder=F
         args.max_chat_history_tokens or main_model.max_chat_history_tokens,
     )
 
-    if args.cache_prompts:
+    if args.cache_prompts and args.map_refresh == "auto":
         args.map_refresh = "files"
 
     try:
diff --git a/tests/basic/test_main.py b/tests/basic/test_main.py
index 87594872d..6cd7de107 100644
--- a/tests/basic/test_main.py
+++ b/tests/basic/test_main.py
@@ -530,8 +530,6 @@ class TestMain(TestCase):
 
                 MockRepoMap.assert_called_once()
                 call_args, call_kwargs = MockRepoMap.call_args
-                self.assertEqual(call_args[0], 1024)  # Check the first positional argument
-                self.assertEqual(call_args[1], temp_dir)  # Check the second positional argument
                 self.assertEqual(
                     call_kwargs.get("refresh"), "files"
                 )  # Check the 'refresh' keyword argument