Add support for claude-haiku-4-5 (#11434)

frontend/src/mocks/handlers.ts

@@ -116,8 +116,10 @@ const openHandsHandlers = [
       "anthropic/claude-3.5",
       "anthropic/claude-sonnet-4-20250514",
       "anthropic/claude-sonnet-4-5-20250929",
+      "anthropic/claude-haiku-4-5-20251001",
       "openhands/claude-sonnet-4-20250514",
       "openhands/claude-sonnet-4-5-20250929",
+      "openhands/claude-haiku-4-5-20251001",
       "sambanova/Meta-Llama-3.1-8B-Instruct",
     ]),
   ),

frontend/src/utils/verified-models.ts

@@ -16,6 +16,7 @@ export const VERIFIED_MODELS = [
   "claude-3-7-sonnet-20250219",
   "claude-sonnet-4-20250514",
   "claude-sonnet-4-5-20250929",
+  "claude-haiku-4-5-20251001",
   "claude-opus-4-20250514",
   "claude-opus-4-1-20250805",
   "gemini-2.5-pro",
@@ -55,6 +56,7 @@ export const VERIFIED_ANTHROPIC_MODELS = [
   "claude-3-7-sonnet-20250219",
   "claude-sonnet-4-20250514",
   "claude-sonnet-4-5-20250929",
+  "claude-haiku-4-5-20251001",
   "claude-opus-4-20250514",
   "claude-opus-4-1-20250805",
 ];
@@ -72,6 +74,7 @@ export const VERIFIED_MISTRAL_MODELS = [
 export const VERIFIED_OPENHANDS_MODELS = [
   "claude-sonnet-4-20250514",
   "claude-sonnet-4-5-20250929",
+  "claude-haiku-4-5-20251001",
   "gpt-5-2025-08-07",
   "gpt-5-mini-2025-08-07",
   "claude-opus-4-20250514",

openhands-cli/pyproject.toml

@@ -100,5 +100,5 @@ disallow_untyped_defs = true
 ignore_missing_imports = true
 
 [tool.uv.sources]
-openhands-sdk = { git = "https://github.com/All-Hands-AI/agent-sdk.git", subdirectory = "openhands/sdk", rev = "50b094a92817e448ec4352d2950df4f19edd5a9f" }
+openhands-sdk = { git = "https://github.com/All-Hands-AI/agent-sdk.git", subdirectory = "openhands/sdk", rev = "4ffaa97a9a438b913b73696e192b5575419407bc" }
-openhands-tools = { git = "https://github.com/All-Hands-AI/agent-sdk.git", subdirectory = "openhands/tools", rev = "50b094a92817e448ec4352d2950df4f19edd5a9f" }
+openhands-tools = { git = "https://github.com/All-Hands-AI/agent-sdk.git", subdirectory = "openhands/tools", rev = "4ffaa97a9a438b913b73696e192b5575419407bc" }

openhands-cli/uv.lock

@@ -1281,7 +1281,7 @@ wheels = [
 [[package]]
 name = "litellm"
 version = "1.77.7"
-source = { git = "https://github.com/BerriAI/litellm.git?rev=v1.77.7.dev9#763d2f8ccdd8412dbe6d4ac0e136d9ac34dcd4c0" }
+source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "aiohttp" },
     { name = "click" },
@@ -1296,6 +1296,10 @@ dependencies = [
     { name = "tiktoken" },
     { name = "tokenizers" },
 ]
+sdist = { url = "https://files.pythonhosted.org/packages/5a/4b/4e9a204462687ca3796cc0fdaefbd624d7b2216edd4ad243d60a3b95127e/litellm-1.77.7.tar.gz", hash = "sha256:e3398fb2575b98726e787c0a1481daed5938d58cafdcd96fbca80c312221af3e", size = 10401706, upload-time = "2025-10-05T00:22:37.646Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/86/50/53df2244d4aca2af73d2f2c6ad21c731cf24bd0dbe89d896184a1eaa874f/litellm-1.77.7-py3-none-any.whl", hash = "sha256:1b3a1b17bd521a0ad25226fb62a912602c803922aabb4a16adf83834673be574", size = 9223061, upload-time = "2025-10-05T00:22:34.112Z" },
+]
 
 [[package]]
 name = "macholib"
@@ -1652,8 +1656,8 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "openhands-sdk", git = "https://github.com/All-Hands-AI/agent-sdk.git?subdirectory=openhands%2Fsdk&rev=50b094a92817e448ec4352d2950df4f19edd5a9f" },
+    { name = "openhands-sdk", git = "https://github.com/All-Hands-AI/agent-sdk.git?subdirectory=openhands%2Fsdk&rev=4ffaa97a9a438b913b73696e192b5575419407bc" },
-    { name = "openhands-tools", git = "https://github.com/All-Hands-AI/agent-sdk.git?subdirectory=openhands%2Ftools&rev=50b094a92817e448ec4352d2950df4f19edd5a9f" },
+    { name = "openhands-tools", git = "https://github.com/All-Hands-AI/agent-sdk.git?subdirectory=openhands%2Ftools&rev=4ffaa97a9a438b913b73696e192b5575419407bc" },
     { name = "prompt-toolkit", specifier = ">=3" },
     { name = "typer", specifier = ">=0.17.4" },
 ]
@@ -1676,8 +1680,8 @@ dev = [
 
 [[package]]
 name = "openhands-sdk"
-version = "1.0.0"
+version = "1.0.0a1"
-source = { git = "https://github.com/All-Hands-AI/agent-sdk.git?subdirectory=openhands%2Fsdk&rev=50b094a92817e448ec4352d2950df4f19edd5a9f#50b094a92817e448ec4352d2950df4f19edd5a9f" }
+source = { git = "https://github.com/All-Hands-AI/agent-sdk.git?subdirectory=openhands%2Fsdk&rev=4ffaa97a9a438b913b73696e192b5575419407bc#4ffaa97a9a438b913b73696e192b5575419407bc" }
 dependencies = [
     { name = "fastmcp" },
     { name = "httpx" },
@@ -1691,8 +1695,8 @@ dependencies = [
 
 [[package]]
 name = "openhands-tools"
-version = "1.0.0"
+version = "1.0.0a1"
-source = { git = "https://github.com/All-Hands-AI/agent-sdk.git?subdirectory=openhands%2Ftools&rev=50b094a92817e448ec4352d2950df4f19edd5a9f#50b094a92817e448ec4352d2950df4f19edd5a9f" }
+source = { git = "https://github.com/All-Hands-AI/agent-sdk.git?subdirectory=openhands%2Ftools&rev=4ffaa97a9a438b913b73696e192b5575419407bc#4ffaa97a9a438b913b73696e192b5575419407bc" }
 dependencies = [
     { name = "bashlex" },
     { name = "binaryornot" },

openhands/cli/utils.py

@@ -166,6 +166,7 @@ VERIFIED_OPENAI_MODELS = [
 VERIFIED_ANTHROPIC_MODELS = [
     'claude-sonnet-4-20250514',
     'claude-sonnet-4-5-20250929',
+    'claude-haiku-4-5-20251001',
     'claude-opus-4-20250514',
     'claude-opus-4-1-20250805',
     'claude-3-7-sonnet-20250219',
@@ -188,6 +189,7 @@ VERIFIED_MISTRAL_MODELS = [
 VERIFIED_OPENHANDS_MODELS = [
     'claude-sonnet-4-20250514',
     'claude-sonnet-4-5-20250929',
+    'claude-haiku-4-5-20251001',
     'gpt-5-2025-08-07',
     'gpt-5-mini-2025-08-07',
     'claude-opus-4-20250514',

openhands/llm/llm.py

@@ -148,10 +148,12 @@ class LLM(RetryMixin, DebugMixin):
                 logger.debug(
                     f'Gemini model {self.config.model} with reasoning_effort {self.config.reasoning_effort} mapped to thinking {kwargs.get("thinking")}'
                 )
-            elif 'claude-sonnet-4-5' in self.config.model:
+            elif any(
-                kwargs.pop(
+                k in self.config.model
-                    'reasoning_effort', None
+                for k in ('claude-sonnet-4-5', 'claude-haiku-4-5-20251001')
-                )  # don't send reasoning_effort to Claude Sonnet 4.5
+            ):
+                # don't send reasoning_effort to specific Claude Sonnet/Haiku 4.5 variants
+                kwargs.pop('reasoning_effort', None)
             else:
                 kwargs['reasoning_effort'] = self.config.reasoning_effort
             kwargs.pop(
@@ -511,6 +513,7 @@ class LLM(RetryMixin, DebugMixin):
                 'claude-3.7-sonnet',
                 'claude-sonnet-4',
                 'claude-sonnet-4-5-20250929',
+                'claude-haiku-4-5-20251001',
             ]
             if any(model in self.config.model for model in sonnet_models):
                 self.config.max_output_tokens = 64000  # litellm set max to 128k, but that requires a header to be set
@@ -819,9 +822,14 @@ class LLM(RetryMixin, DebugMixin):
                 message.force_string_serializer = True
             if 'kimi-k2-instruct' in self.config.model and 'groq' in self.config.model:
                 message.force_string_serializer = True
-            if 'openrouter/anthropic/claude-sonnet-4' in self.config.model:
+            if any(
-                message.force_string_serializer = True
+                k in self.config.model
-            if 'openrouter/anthropic/claude-sonnet-4-5-20250929' in self.config.model:
+                for k in (
+                    'openrouter/anthropic/claude-sonnet-4',
+                    'openrouter/anthropic/claude-sonnet-4-5-20250929',
+                    'openrouter/anthropic/claude-haiku-4-5-20251001',
+                )
+            ):
                 message.force_string_serializer = True
 
         # let pydantic handle the serialization

openhands/llm/model_features.py

@@ -104,6 +104,7 @@ REASONING_EFFORT_PATTERNS: list[str] = [
     # DeepSeek reasoning family
     'deepseek-r1-0528*',
     'claude-sonnet-4-5*',
+    'claude-haiku-4-5*',
 ]
 
 PROMPT_CACHE_PATTERNS: list[str] = [