diff --git a/ask/anthropic.py b/ask/anthropic.py
new file mode 100644
index 0000000..68079c0
--- /dev/null
+++ b/ask/anthropic.py
@@ -0,0 +1,55 @@
+import os
+from anthropic import Anthropic
+from typing import Optional
+
+from anthropic.types import TextBlock
+from .bot_service import BotService
+from .renderer import AbstractRenderer
+
+ANTHROPIC_API_KEY_NAME = "ANTHROPIC_API_KEY"
+
+
+class AnthropicService(BotService):
+    def __init__(self, prompt, renderer: AbstractRenderer, line_target=0) -> None:
+        self.renderer = renderer
+        if ANTHROPIC_API_KEY_NAME not in os.environ:
+            self.renderer.print(
+                f"""
+
+      Please get a Anthropic API key from https://console.anthropic.com/
+      and set in the environment variable {ANTHROPIC_API_KEY_NAME}
+
+                  """
+            )
+            self._available = False
+            return
+        self._available = True
+
+        self.client = Anthropic(
+            api_key=os.environ.get(ANTHROPIC_API_KEY_NAME),
+        )
+        self._available = True
+
+    @property
+    def available(self) -> bool:
+        return self._available
+
+    def process(self, user_input: str) -> Optional[str]:
+        try:
+            message = self.client.messages.create(
+                max_tokens=4906,
+                messages=[
+                    {
+                        "role": "user",
+                        "content": user_input,
+                    }
+                ],
+                model="claude-3-5-sonnet-20240620",
+            )
+            content = message.content[0]
+            if type(content) is TextBlock:
+                return content.text
+        except Exception as e:
+            print(f"\nCannot process prompt \n{user_input}\n", e)
+
+        return None
diff --git a/ask/ask.py b/ask/ask.py
index f46054c..4f726b4 100644
--- a/ask/ask.py
+++ b/ask/ask.py
@@ -13,6 +13,7 @@
 from .transcribe import register_transcribed_text, stop_transcribe
 from .config import load_config, default_parse_args
 from .gemini import Gemini
+from .anthropic import AnthropicService
 from .ollama import Ollama
 from .renderer import RichRenderer, AbstractRenderer
 from .bot_service import BotService
@@ -62,6 +63,8 @@ def run(
         match config.service.provider.lower():
             case "ollama":
                 Service = Ollama
+            case "anthropic":
+                Service = AnthropicService
             case _:
                 Service = Gemini
     service = Service(renderer=renderer, prompt=prompt, line_target=config.line_target)
diff --git a/ask/bot_service.py b/ask/bot_service.py
index 1a7a7a6..f0cb12d 100644
--- a/ask/bot_service.py
+++ b/ask/bot_service.py
@@ -12,7 +12,7 @@ def __init__(
         pass
 
     @abstractmethod
-    def process(self, user_input: Optional[str]) -> Optional[str]:
+    def process(self, user_input: str) -> Optional[str]:
         pass
 
     @property
diff --git a/ask/ollama.py b/ask/ollama.py
index 3f6cf6e..863e8c0 100644
--- a/ask/ollama.py
+++ b/ask/ollama.py
@@ -8,7 +8,7 @@ class Ollama(BotService):
     def available(self) -> bool:
         return True
 
-    def process(self, user_input: Optional[str]) -> Optional[str]:
+    def process(self, user_input: str) -> Optional[str]:
         response = requests.post(
             "http://localhost:11434/api/generate",
             json={"model": "qwen2.5:1.5b", "prompt": user_input, "stream": False},
diff --git a/ask/tests/conftest.py b/ask/tests/conftest.py
index 66a9db3..234d176 100644
--- a/ask/tests/conftest.py
+++ b/ask/tests/conftest.py
@@ -1,9 +1,13 @@
 import os
 from ..gemini import API_KEY_NAME
+from ..anthropic import ANTHROPIC_API_KEY_NAME
 
 # Safety check to ensure that API_KEY is not passed into unit tests since this
 # could have unintended side effect from environment leaking in
 if API_KEY_NAME in os.environ:
     os.environ.pop(API_KEY_NAME)
+if ANTHROPIC_API_KEY_NAME in os.environ:
+    os.environ.pop(ANTHROPIC_API_KEY_NAME)
 
 assert API_KEY_NAME not in os.environ
+assert ANTHROPIC_API_KEY_NAME not in os.environ
diff --git a/requirements.txt b/requirements.txt
index e8b8fe0..32a4225 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+anthropic
 configparser
 google-generativeai
 prompt_toolkit