Add Claude 4.5 Sonnet support and update default model (#296)

* Fix claude-sonnet-4-5-20250929 tool compatibility

- Add EditTool20250728 with text_editor_20250728 API type and str_replace_based_edit_tool name
- Update computer_use_20250124 to use EditTool20250728 instead of EditTool20250124
- Add CLAUDE_4_5 model configuration using computer_use_20250124 tool version
- Update model mapping to use CLAUDE_4_5 for claude-sonnet-4-5-20250929
- Set claude-sonnet-4-5-20250929 as the default model

This resolves the "does not support tool types: text_editor_20250124" error
by using the official tool types supported by the model: bash_20250124,
computer_20250124, text_editor_20250728.

Uses official computer_use_20250124 tool version instead of inventing a new one.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

* Update README to reflect Claude 4.5 Sonnet as default model

Updates the default model reference from claude-sonnet-4-20250514 to
claude-sonnet-4-5-20250929 in the README note section.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

* remove unused import

---------

Co-authored-by: Claude <[email protected]>

Author: parisac-ant

computer-use-demo/README.md

@@ -1,7 +1,7 @@
 # Anthropic Computer Use Demo
 
 > [!NOTE]
-> Now featuring support for the new Claude 4 models! The latest Claude 4 Sonnet (claude-sonnet-4-20250514) is now the default model, with Claude 4 Opus (claude-opus-4-20250514) also available. These models bring next-generation capabilities with the updated str_replace_based_edit_tool that replaces the previous str_replace_editor tool. The undo_edit command has been removed in this latest version for a more streamlined experience.
+> Now featuring support for the new Claude 4 models! The latest Claude 4.5 Sonnet (claude-sonnet-4-5-20250929) is now the default model, with Claude 4 Sonnet (claude-sonnet-4-20250514) and Claude 4 Opus (claude-opus-4-20250514) also available. These models bring next-generation capabilities with the updated str_replace_based_edit_tool that replaces the previous str_replace_editor tool. The undo_edit command has been removed in this latest version for a more streamlined experience.
 
 > [!CAUTION]
 > Computer use is a beta feature. Please be aware that computer use poses unique risks that are distinct from standard API features or chat interfaces. These risks are heightened when using computer use to interact with the internet. To minimize risks, consider taking precautions such as:

computer-use-demo/computer_use_demo/streamlit.py

@@ -32,7 +32,7 @@
 from computer_use_demo.tools import ToolResult, ToolVersion
 
 PROVIDER_TO_DEFAULT_MODEL_NAME: dict[APIProvider, str] = {
-    APIProvider.ANTHROPIC: "claude-sonnet-4-20250514",
+    APIProvider.ANTHROPIC: "claude-sonnet-4-5-20250929",
     APIProvider.BEDROCK: "anthropic.claude-3-5-sonnet-20241022-v2:0",
     APIProvider.VERTEX: "claude-3-5-sonnet-v2@20241022",
 }
@@ -66,10 +66,18 @@ class ModelConfig:
     has_thinking=True,
 )
 
+CLAUDE_4_5 = ModelConfig(
+    tool_version="computer_use_20250124",
+    max_output_tokens=128_000,
+    default_output_tokens=1024 * 16,
+    has_thinking=True,
+)
+
 MODEL_TO_MODEL_CONF: dict[str, ModelConfig] = {
     "claude-3-7-sonnet-20250219": SONNET_3_7,
     "claude-opus-4@20250508": CLAUDE_4,
     "claude-sonnet-4-20250514": CLAUDE_4,
+    "claude-sonnet-4-5-20250929": CLAUDE_4_5,
     "claude-opus-4-20250514": CLAUDE_4,
 }
 
@@ -513,10 +521,10 @@ def _render_message(
                 thinking_content = message.get("thinking", "")
                 st.markdown(f"[Thinking]\n\n{thinking_content}")
             elif message["type"] == "tool_use":
-                st.code(f'Tool Use: {message["name"]}\nInput: {message["input"]}')
+                st.code(f"Tool Use: {message['name']}\nInput: {message['input']}")
             else:
                 # only expected return types are text and tool_use
-                raise Exception(f'Unexpected response type {message["type"]}')
+                raise Exception(f"Unexpected response type {message['type']}")
         else:
             st.markdown(message)
 

computer-use-demo/computer_use_demo/tools/__init__.py

@@ -2,7 +2,7 @@
 from .bash import BashTool20241022, BashTool20250124
 from .collection import ToolCollection
 from .computer import ComputerTool20241022, ComputerTool20250124
-from .edit import EditTool20241022, EditTool20250124, EditTool20250429
+from .edit import EditTool20241022, EditTool20250124, EditTool20250429, EditTool20250728
 from .groups import TOOL_GROUPS_BY_VERSION, ToolVersion
 
 __ALL__ = [
@@ -14,6 +14,7 @@
     EditTool20241022,
     EditTool20250124,
     EditTool20250429,
+    EditTool20250728,
     ToolCollection,
     ToolResult,
     ToolVersion,

computer-use-demo/computer_use_demo/tools/edit.py

@@ -557,5 +557,10 @@ def _make_output(
         )
 
 
+class EditTool20250728(EditTool20250124):
+    api_type: Literal["text_editor_20250728"] = "text_editor_20250728"  # pyright: ignore[reportIncompatibleVariableOverride]
+    name: Literal["str_replace_based_edit_tool"] = "str_replace_based_edit_tool"  # pyright: ignore[reportIncompatibleVariableOverride]
+
+
 class EditTool20241022(EditTool20250124):
     api_type: Literal["text_editor_20250429"] = "text_editor_20250429"  # pyright: ignore[reportIncompatibleVariableOverride]

computer-use-demo/computer_use_demo/tools/groups.py

@@ -4,7 +4,7 @@
 from .base import BaseAnthropicTool
 from .bash import BashTool20241022, BashTool20250124
 from .computer import ComputerTool20241022, ComputerTool20250124
-from .edit import EditTool20241022, EditTool20250124, EditTool20250429
+from .edit import EditTool20241022, EditTool20250429, EditTool20250728
 
 ToolVersion = Literal[
     "computer_use_20250124", "computer_use_20241022", "computer_use_20250429"
@@ -29,7 +29,7 @@ class ToolGroup:
     ),
     ToolGroup(
         version="computer_use_20250124",
-        tools=[ComputerTool20250124, EditTool20250124, BashTool20250124],
+        tools=[ComputerTool20250124, EditTool20250728, BashTool20250124],
         beta_flag="computer-use-2025-01-24",
     ),
     ToolGroup(