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fix(bedrock_mantle): register xai.grok-4.3 for SigV4 Responses API routing #31374

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fix(bedrock_mantle): register xai.grok-4.3 for SigV4 Responses API routing #31374

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20 changes: 20 additions & 0 deletions litellm/model_prices_and_context_window_backup.json
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Original file line number Diff line number Diff line change
Expand Up @@ -42795,6 +42795,26 @@
"supports_tool_choice": true,
"supports_vision": true
},
"bedrock_mantle/xai.grok-4.3": {
"input_cost_per_token": 1.25e-06,
"output_cost_per_token": 2.5e-06,
"litellm_provider": "bedrock_mantle",
"max_input_tokens": 1000000,
"max_output_tokens": 128000,
"max_tokens": 128000,
"mode": "chat",
"use_openai_responses_path": true,
"supported_endpoints": ["/v1/chat/completions", "/v1/responses"],
"supported_modalities": ["text", "image"],
"supported_output_modalities": ["text"],
"supports_function_calling": true,
"supports_none_reasoning_effort": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_tool_choice": true,
"supports_vision": true,
"source": "https://docs.aws.amazon.com/bedrock/latest/userguide/model-card-xai-grok-4-3.html"
},
"volcengine/doubao-seed-2-0-pro-260215": {
"litellm_provider": "volcengine",
"max_input_tokens": 256000,
Expand Down
20 changes: 20 additions & 0 deletions model_prices_and_context_window.json
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Original file line number Diff line number Diff line change
Expand Up @@ -43197,6 +43197,26 @@
"supports_tool_choice": true,
"supports_vision": true
},
"bedrock_mantle/xai.grok-4.3": {
"input_cost_per_token": 1.25e-06,
"output_cost_per_token": 2.5e-06,
"litellm_provider": "bedrock_mantle",
"max_input_tokens": 1000000,
"max_output_tokens": 128000,
"max_tokens": 128000,
"mode": "chat",
"use_openai_responses_path": true,
"supported_endpoints": ["/v1/chat/completions", "/v1/responses"],
"supported_modalities": ["text", "image"],
"supported_output_modalities": ["text"],
"supports_function_calling": true,
"supports_none_reasoning_effort": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_tool_choice": true,
"supports_vision": true,
"source": "https://docs.aws.amazon.com/bedrock/latest/userguide/model-card-xai-grok-4-3.html"
},
"volcengine/doubao-seed-2-0-pro-260215": {
"litellm_provider": "volcengine",
"max_input_tokens": 256000,
Expand Down
30 changes: 30 additions & 0 deletions tests/test_litellm/llms/bedrock_mantle/test_bedrock_mantle_responses_transformation.py
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Expand Up @@ -714,6 +714,20 @@ class TestMantleSupportsResponses:
{"bedrock_mantle/google.gemma-3-27b-it": {"mode": "chat"}},
False,
),
# grok-4.3 on mantle openai/v1 responses path
(
"xai.grok-4.3",
{
"bedrock_mantle/xai.grok-4.3": {
"mode": "chat",
"supported_endpoints": [
"/v1/chat/completions",
"/v1/responses",
],
}
},
True,
),
# absent from model_cost -> no signal -> not supported
("somelab.unmapped", {}, False),
(None, {}, False),
Expand Down Expand Up @@ -759,6 +773,10 @@ def test_gemma_4_uses_openai_responses_path(self, local_cost_map, model):
url = self._url_for(model)
assert url == "https://bedrock-mantle.us-east-2.api.aws/openai/v1/responses"

def test_grok_4_3_uses_openai_responses_path(self, local_cost_map):
url = self._url_for("xai.grok-4.3")
assert url == "https://bedrock-mantle.us-east-2.api.aws/openai/v1/responses"


class TestBedrockMantleEndpointHonoring:
def test_plain_chat_call_to_gpt_oss_is_not_bridged(self, local_cost_map):
Expand Down Expand Up @@ -1230,3 +1248,15 @@ def test_gpt_5_4_pricing_and_mode(self, local_cost_map):
def test_models_registered(self, local_cost_map):
assert "bedrock_mantle/openai.gpt-5.5" in litellm.bedrock_mantle_models
assert "bedrock_mantle/openai.gpt-5.4" in litellm.bedrock_mantle_models
assert "bedrock_mantle/xai.grok-4.3" in litellm.bedrock_mantle_models

def test_grok_4_3_pricing_and_capabilities(self, local_cost_map):
info = litellm.get_model_info("bedrock_mantle/xai.grok-4.3")
assert info["mode"] == "chat"
assert info["input_cost_per_token"] == pytest.approx(1.25e-06)
assert info["output_cost_per_token"] == pytest.approx(2.5e-06)
assert info["max_input_tokens"] == 1000000
assert info["supports_none_reasoning_effort"] is True
from litellm.llms.bedrock_mantle.common_utils import mantle_base_segment

assert mantle_base_segment("xai.grok-4.3", litellm.model_cost) == "openai/v1"