feat(api): Add support for claude-mythos-preview

Author: stainless-app[bot]

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 34
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic%2Fanthropic-efe26b096126c693462514b8cbd3ec3e376569232becbfb730cd26fb31c7c7e3.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic%2Fanthropic-04225437444990f383d0581df2f07022baab6ad510de0f3a8bd6b07c38d83cc9.yml
 openapi_spec_hash: cae9199aabfd7b87f0ff2dcc10760c92
-config_hash: e1ebf6470ea96e5b7bf02520fbeeed0a
+config_hash: fcc34074db6eaf64bc99b578c6c82c61

src/anthropic/types/model.py

@@ -7,6 +7,7 @@
 
 Model: TypeAlias = Union[
     Literal[
+        "claude-mythos-preview",
         "claude-opus-4-6",
         "claude-sonnet-4-6",
         "claude-haiku-4-5",

src/anthropic/types/model_param.py

@@ -9,6 +9,7 @@
 
 ModelParam: TypeAlias = Union[
     Literal[
+        "claude-mythos-preview",
         "claude-opus-4-6",
         "claude-sonnet-4-6",
         "claude-haiku-4-5",

tests/api_resources/beta/test_messages.py

@@ -396,7 +396,7 @@ def test_method_count_tokens(self, client: Anthropic) -> None:
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         )
         assert_matches_type(BetaMessageTokensCount, message, path=["response"])
 
@@ -409,7 +409,7 @@ def test_method_count_tokens_with_all_params(self, client: Anthropic) -> None:
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             cache_control={
                 "type": "ephemeral",
                 "ttl": "5m",
@@ -520,7 +520,7 @@ def test_raw_response_count_tokens(self, client: Anthropic) -> None:
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         )
 
         assert response.is_closed is True
@@ -537,7 +537,7 @@ def test_streaming_response_count_tokens(self, client: Anthropic) -> None:
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         ) as response:
             assert not response.is_closed
             assert response.http_request.headers.get("X-Stainless-Lang") == "python"
@@ -945,7 +945,7 @@ async def test_method_count_tokens(self, async_client: AsyncAnthropic) -> None:
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         )
         assert_matches_type(BetaMessageTokensCount, message, path=["response"])
 
@@ -958,7 +958,7 @@ async def test_method_count_tokens_with_all_params(self, async_client: AsyncAnth
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             cache_control={
                 "type": "ephemeral",
                 "ttl": "5m",
@@ -1069,7 +1069,7 @@ async def test_raw_response_count_tokens(self, async_client: AsyncAnthropic) ->
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         )
 
         assert response.is_closed is True
@@ -1086,7 +1086,7 @@ async def test_streaming_response_count_tokens(self, async_client: AsyncAnthropi
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         ) as response:
             assert not response.is_closed
             assert response.http_request.headers.get("X-Stainless-Lang") == "python"

tests/api_resources/test_completions.py

@@ -21,7 +21,7 @@ class TestCompletions:
     def test_method_create_overload_1(self, client: Anthropic) -> None:
         completion = client.completions.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
         )
         assert_matches_type(Completion, completion, path=["response"])
@@ -30,7 +30,7 @@ def test_method_create_overload_1(self, client: Anthropic) -> None:
     def test_method_create_with_all_params_overload_1(self, client: Anthropic) -> None:
         completion = client.completions.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
             metadata={"user_id": "13803d75-b4b5-4c3e-b2a2-6f21399b021b"},
             stop_sequences=["string"],
@@ -46,7 +46,7 @@ def test_method_create_with_all_params_overload_1(self, client: Anthropic) -> No
     def test_raw_response_create_overload_1(self, client: Anthropic) -> None:
         response = client.completions.with_raw_response.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
         )
 
@@ -59,7 +59,7 @@ def test_raw_response_create_overload_1(self, client: Anthropic) -> None:
     def test_streaming_response_create_overload_1(self, client: Anthropic) -> None:
         with client.completions.with_streaming_response.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
         ) as response:
             assert not response.is_closed
@@ -74,7 +74,7 @@ def test_streaming_response_create_overload_1(self, client: Anthropic) -> None:
     def test_method_create_overload_2(self, client: Anthropic) -> None:
         completion_stream = client.completions.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
             stream=True,
         )
@@ -84,7 +84,7 @@ def test_method_create_overload_2(self, client: Anthropic) -> None:
     def test_method_create_with_all_params_overload_2(self, client: Anthropic) -> None:
         completion_stream = client.completions.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
             stream=True,
             metadata={"user_id": "13803d75-b4b5-4c3e-b2a2-6f21399b021b"},
@@ -100,7 +100,7 @@ def test_method_create_with_all_params_overload_2(self, client: Anthropic) -> No
     def test_raw_response_create_overload_2(self, client: Anthropic) -> None:
         response = client.completions.with_raw_response.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
             stream=True,
         )
@@ -113,7 +113,7 @@ def test_raw_response_create_overload_2(self, client: Anthropic) -> None:
     def test_streaming_response_create_overload_2(self, client: Anthropic) -> None:
         with client.completions.with_streaming_response.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
             stream=True,
         ) as response:
@@ -135,7 +135,7 @@ class TestAsyncCompletions:
     async def test_method_create_overload_1(self, async_client: AsyncAnthropic) -> None:
         completion = await async_client.completions.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
         )
         assert_matches_type(Completion, completion, path=["response"])
@@ -144,7 +144,7 @@ async def test_method_create_overload_1(self, async_client: AsyncAnthropic) -> N
     async def test_method_create_with_all_params_overload_1(self, async_client: AsyncAnthropic) -> None:
         completion = await async_client.completions.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
             metadata={"user_id": "13803d75-b4b5-4c3e-b2a2-6f21399b021b"},
             stop_sequences=["string"],
@@ -160,7 +160,7 @@ async def test_method_create_with_all_params_overload_1(self, async_client: Asyn
     async def test_raw_response_create_overload_1(self, async_client: AsyncAnthropic) -> None:
         response = await async_client.completions.with_raw_response.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
         )
 
@@ -173,7 +173,7 @@ async def test_raw_response_create_overload_1(self, async_client: AsyncAnthropic
     async def test_streaming_response_create_overload_1(self, async_client: AsyncAnthropic) -> None:
         async with async_client.completions.with_streaming_response.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
         ) as response:
             assert not response.is_closed
@@ -188,7 +188,7 @@ async def test_streaming_response_create_overload_1(self, async_client: AsyncAnt
     async def test_method_create_overload_2(self, async_client: AsyncAnthropic) -> None:
         completion_stream = await async_client.completions.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
             stream=True,
         )
@@ -198,7 +198,7 @@ async def test_method_create_overload_2(self, async_client: AsyncAnthropic) -> N
     async def test_method_create_with_all_params_overload_2(self, async_client: AsyncAnthropic) -> None:
         completion_stream = await async_client.completions.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
             stream=True,
             metadata={"user_id": "13803d75-b4b5-4c3e-b2a2-6f21399b021b"},
@@ -214,7 +214,7 @@ async def test_method_create_with_all_params_overload_2(self, async_client: Asyn
     async def test_raw_response_create_overload_2(self, async_client: AsyncAnthropic) -> None:
         response = await async_client.completions.with_raw_response.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
             stream=True,
         )
@@ -227,7 +227,7 @@ async def test_raw_response_create_overload_2(self, async_client: AsyncAnthropic
     async def test_streaming_response_create_overload_2(self, async_client: AsyncAnthropic) -> None:
         async with async_client.completions.with_streaming_response.create(
             max_tokens_to_sample=256,
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             prompt="\n\nHuman: Hello, world!\n\nAssistant:",
             stream=True,
         ) as response:

tests/api_resources/test_messages.py

@@ -318,7 +318,7 @@ def test_method_count_tokens(self, client: Anthropic) -> None:
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         )
         assert_matches_type(MessageTokensCount, message, path=["response"])
 
@@ -331,7 +331,7 @@ def test_method_count_tokens_with_all_params(self, client: Anthropic) -> None:
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             cache_control={
                 "type": "ephemeral",
                 "ttl": "5m",
@@ -407,7 +407,7 @@ def test_raw_response_count_tokens(self, client: Anthropic) -> None:
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         )
 
         assert response.is_closed is True
@@ -424,7 +424,7 @@ def test_streaming_response_count_tokens(self, client: Anthropic) -> None:
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         ) as response:
             assert not response.is_closed
             assert response.http_request.headers.get("X-Stainless-Lang") == "python"
@@ -737,7 +737,7 @@ async def test_method_count_tokens(self, async_client: AsyncAnthropic) -> None:
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         )
         assert_matches_type(MessageTokensCount, message, path=["response"])
 
@@ -750,7 +750,7 @@ async def test_method_count_tokens_with_all_params(self, async_client: AsyncAnth
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
             cache_control={
                 "type": "ephemeral",
                 "ttl": "5m",
@@ -826,7 +826,7 @@ async def test_raw_response_count_tokens(self, async_client: AsyncAnthropic) ->
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         )
 
         assert response.is_closed is True
@@ -843,7 +843,7 @@ async def test_streaming_response_count_tokens(self, async_client: AsyncAnthropi
                     "role": "user",
                 }
             ],
-            model="claude-opus-4-6",
+            model="claude-mythos-preview",
         ) as response:
             assert not response.is_closed
             assert response.http_request.headers.get("X-Stainless-Lang") == "python"