feat(bedrock_mantle): add Claude Opus 5, Sonnet 5, and Haiku 4.5 support

The Mantle endpoint serves Claude models under dateless IDs
(anthropic.claude-opus-5, anthropic.claude-sonnet-5,
anthropic.claude-haiku-4-5 per the AWS model cards). Two gaps prevented
correct handling:

1. anthropic.claude-haiku-4-5 had no cost-map entry (only the dated
bedrock-runtime ID anthropic.claude-haiku-4-5-20251001-v1:0 exists), so
Mantle Haiku responses were cost-tracked at $0. Add the dateless entry
(200K in / 64K out, $1/$5 per 1M tokens, prompt caching).

2. strip_bedrock_routing_prefix did not strip the mantle/ routing
prefix, so get_model_info on bedrock/mantle/anthropic.claude-* resolved
generalization fallbacks (generic 200K/64K limits, no cache pricing, no
output_config capability flags) instead of the exact bare-model entries.
Add mantle/ to the prefix list; route detection is unaffected because
explicit route prefixes are matched before base-model resolution, and
the bedrock_mantle/ provider prefix is still left intact (segment-
boundary matching).

litellm/llms/bedrock/common_utils.py

@@ -604,7 +604,7 @@ def is_bedrock_application_inference_profile_arn(model: str) -> bool:
 
 def strip_bedrock_routing_prefix(model: str) -> str:
     """Strip LiteLLM routing prefixes from model name."""
-    for prefix in ["bedrock/", "converse/", "invoke/", "openai/", "nova-2/", "nova/"]:
+    for prefix in ["bedrock/", "converse/", "invoke/", "openai/", "mantle/", "nova-2/", "nova/"]:
         if model.startswith(prefix):
             model = model.split("/", 1)[1]
     return model

litellm/model_prices_and_context_window_backup.json

@@ -724,6 +724,31 @@
         "supports_tool_choice": true,
         "prompt_cache_min_tokens": 2048
     },
+    "anthropic.claude-haiku-4-5": {
+        "cache_creation_input_token_cost": 1.25e-06,
+        "cache_creation_input_token_cost_above_1hr": 2e-06,
+        "cache_read_input_token_cost": 1e-07,
+        "input_cost_per_token": 1e-06,
+        "litellm_provider": "bedrock",
+        "max_input_tokens": 200000,
+        "max_output_tokens": 64000,
+        "max_tokens": 64000,
+        "mode": "chat",
+        "output_cost_per_token": 5e-06,
+        "source": "https://docs.aws.amazon.com/bedrock/latest/userguide/model-card-anthropic-claude-haiku-4-5.html",
+        "supports_assistant_prefill": true,
+        "supports_computer_use": true,
+        "supports_function_calling": true,
+        "supports_pdf_input": true,
+        "supports_prompt_caching": true,
+        "supports_reasoning": true,
+        "supports_response_schema": true,
+        "supports_tool_choice": true,
+        "supports_vision": true,
+        "supports_native_structured_output": true,
+        "supports_parallel_tool_use_config": true,
+        "prompt_cache_min_tokens": 4096
+    },
     "anthropic.claude-haiku-4-5-20251001-v1:0": {
         "cache_creation_input_token_cost": 1.25e-06,
         "cache_creation_input_token_cost_above_1hr": 2e-06,

model_prices_and_context_window.json

@@ -724,6 +724,31 @@
         "supports_tool_choice": true,
         "prompt_cache_min_tokens": 2048
     },
+    "anthropic.claude-haiku-4-5": {
+        "cache_creation_input_token_cost": 1.25e-06,
+        "cache_creation_input_token_cost_above_1hr": 2e-06,
+        "cache_read_input_token_cost": 1e-07,
+        "input_cost_per_token": 1e-06,
+        "litellm_provider": "bedrock",
+        "max_input_tokens": 200000,
+        "max_output_tokens": 64000,
+        "max_tokens": 64000,
+        "mode": "chat",
+        "output_cost_per_token": 5e-06,
+        "source": "https://docs.aws.amazon.com/bedrock/latest/userguide/model-card-anthropic-claude-haiku-4-5.html",
+        "supports_assistant_prefill": true,
+        "supports_computer_use": true,
+        "supports_function_calling": true,
+        "supports_pdf_input": true,
+        "supports_prompt_caching": true,
+        "supports_reasoning": true,
+        "supports_response_schema": true,
+        "supports_tool_choice": true,
+        "supports_vision": true,
+        "supports_native_structured_output": true,
+        "supports_parallel_tool_use_config": true,
+        "prompt_cache_min_tokens": 4096
+    },
     "anthropic.claude-haiku-4-5-20251001-v1:0": {
         "cache_creation_input_token_cost": 1.25e-06,
         "cache_creation_input_token_cost_above_1hr": 2e-06,

tests/test_litellm/llms/bedrock/test_mantle.py

@@ -687,3 +687,91 @@ async def test_mantle_anthropic_messages_streaming_sends_stream_and_passes_throu
     assert "event: message_start" in text
     assert '"text": "pong"' in text
     assert "event: message_stop" in text
+
+
+@pytest.fixture
+def local_cost_map(monkeypatch):
+    import litellm
+
+    original_model_cost = litellm.model_cost
+    try:
+        monkeypatch.setenv("LITELLM_LOCAL_MODEL_COST_MAP", "true")
+        litellm.model_cost = litellm.get_model_cost_map(url="")
+        litellm.get_model_info.cache_clear()
+        yield
+    finally:
+        litellm.model_cost = original_model_cost
+        litellm.get_model_info.cache_clear()
+
+
+@pytest.mark.parametrize(
+    "model_id,max_input,max_output,input_cost,output_cost",
+    [
+        ("anthropic.claude-opus-5", 1_000_000, 128_000, 5e-06, 2.5e-05),
+        ("anthropic.claude-sonnet-5", 1_000_000, 128_000, 2e-06, 1e-05),
+        ("anthropic.claude-haiku-4-5", 200_000, 64_000, 1e-06, 5e-06),
+    ],
+)
+def test_mantle_route_resolves_exact_model_info(
+    local_cost_map, model_id, max_input, max_output, input_cost, output_cost
+):
+    """The mantle/ routing prefix must resolve the exact bare-model cost-map
+    entry, not a generalization fallback. Before the fix,
+    strip_bedrock_routing_prefix left the mantle/ prefix in place, so
+    bedrock/mantle/anthropic.claude-opus-5 resolved generic 200k/64k limits
+    instead of the 1M/128k entry, and anthropic.claude-haiku-4-5 (the dateless
+    ID the Mantle endpoint uses) had no entry at all and cost $0."""
+    import litellm
+
+    info = litellm.get_model_info(f"bedrock/mantle/{model_id}")
+    assert info["max_input_tokens"] == max_input
+    assert info["max_output_tokens"] == max_output
+    assert info["input_cost_per_token"] == input_cost
+    assert info["output_cost_per_token"] == output_cost
+
+
+@pytest.mark.parametrize(
+    "model_id",
+    [
+        "anthropic.claude-opus-5",
+        "anthropic.claude-sonnet-5",
+        "anthropic.claude-haiku-4-5",
+    ],
+)
+def test_get_bedrock_route_mantle_claude_models(model_id):
+    assert BedrockModelInfo.get_bedrock_route(f"mantle/{model_id}") == "mantle"
+    assert BedrockModelInfo.get_bedrock_route(f"bedrock/mantle/{model_id}") == "mantle"
+
+
+def test_strip_bedrock_routing_prefix_strips_mantle_but_not_provider_prefix():
+    from litellm.llms.bedrock.common_utils import strip_bedrock_routing_prefix
+
+    assert (
+        strip_bedrock_routing_prefix("bedrock/mantle/anthropic.claude-opus-5")
+        == "anthropic.claude-opus-5"
+    )
+    assert (
+        strip_bedrock_routing_prefix("mantle/anthropic.claude-sonnet-5")
+        == "anthropic.claude-sonnet-5"
+    )
+    assert (
+        strip_bedrock_routing_prefix("bedrock_mantle/openai.gpt-5.5")
+        == "bedrock_mantle/openai.gpt-5.5"
+    )
+
+
+def test_mantle_haiku_4_5_cost_tracking(local_cost_map):
+    """Regression: the Mantle endpoint serves Haiku 4.5 under the dateless ID
+    anthropic.claude-haiku-4-5 (bedrock-runtime uses the dated
+    anthropic.claude-haiku-4-5-20251001-v1:0). Without a dateless entry,
+    completion_cost silently returned 0.0."""
+    import litellm
+    from litellm.types.utils import Choices, Message, ModelResponse, Usage
+
+    response = ModelResponse(
+        model="anthropic.claude-haiku-4-5",
+        choices=[Choices(message=Message(content="ok"))],
+        usage=Usage(prompt_tokens=1000, completion_tokens=1000),
+    )
+    cost = litellm.completion_cost(completion_response=response, custom_llm_provider="bedrock")
+    assert cost == pytest.approx(1000 * 1e-06 + 1000 * 5e-06)