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[Feat]Add day 0 claude sonnet 4.6 feat support #21448

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Merged
Sameerlite merged 6 commits into from
Feb 18, 2026
Merged

[Feat]Add day 0 claude sonnet 4.6 feat support #21448

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2bbae68
Add sonnet-4.6 for tool use
Sameerlite Feb 18, 2026
0cb56c9
Add mapping for thinking and response format
Sameerlite Feb 18, 2026
bdba316
Add inference_geo: us costing
Sameerlite Feb 18, 2026
892b9ac
Add other provider feats
Sameerlite Feb 18, 2026
e0b28a1
Add other provider feats
Sameerlite Feb 18, 2026
f6d3919
Merge branch 'main' into litellm_sonnet_4_6_feat
Sameerlite Feb 18, 2026
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8 changes: 6 additions & 2 deletions litellm/llms/anthropic/chat/transformation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -172,8 +172,8 @@ def convert_tool_use_to_openai_format(

@staticmethod
def _is_claude_opus_4_6(model: str) -> bool:
"""Check if the model is Claude Opus 4.5."""
return "opus-4-6" in model.lower() or "opus_4_6" in model.lower()
"""Check if the model is Claude Opus 4.5 or Sonnet 4.6."""
return "opus-4-6" in model.lower() or "opus_4_6" in model.lower() or "sonnet-4-6" in model.lower() or "sonnet_4_6" in model.lower() or "sonnet-4.6" in model.lower()

def get_supported_openai_params(self, model: str):
params = [
Expand Down Expand Up @@ -881,6 +881,10 @@ def map_openai_params( # noqa: PLR0915
"opus-4-5",
"opus-4.6",
"opus-4-6",
"sonnet-4.6",
"sonnet-4-6",
"sonnet_4.6",
"sonnet_4_6",
}
):
_output_format = (
Expand Down
7 changes: 1 addition & 6 deletions litellm/llms/bedrock/chat/converse_transformation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1277,12 +1277,7 @@ def _process_tools_and_beta(
# "computer-use-2025-01-24" for Claude Sonnet 4.5, Haiku 4.5, Opus 4.1, Sonnet 4, Opus 4, and Sonnet 3.7
# "computer-use-2024-10-22" for older models
model_lower = model.lower()
if (
"opus-4.6" in model_lower
or "opus_4.6" in model_lower
or "opus-4-6" in model_lower
or "opus_4_6" in model_lower
):
if "opus-4.6" in model_lower or "opus_4.6" in model_lower or "opus-4-6" in model_lower or "opus_4_6" in model_lower or "sonnet-4.6" in model_lower or "sonnet_4.6" in model_lower or "sonnet-4-6" in model_lower or "sonnet_4_6" in model_lower:
computer_use_header = "computer-use-2025-11-24"
elif (
"opus-4.5" in model_lower
Expand Down
8 changes: 8 additions & 0 deletions litellm/llms/bedrock/common_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -478,6 +478,14 @@ def is_claude_4_5_on_bedrock(model: str) -> bool:
"opus_4.5",
"opus-4-5",
"opus_4_5",
"sonnet-4.6",
"sonnet_4.6",
"sonnet-4-6",
"sonnet_4_6",
"opus-4.6",
"opus_4.6",
"opus-4-6",
"opus_4_6",
]
return any(pattern in model_lower for pattern in claude_4_5_patterns)

Expand Down
17 changes: 14 additions & 3 deletions litellm/llms/bedrock/messages/invoke_transformations/anthropic_claude3_transformation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -180,6 +180,14 @@ def _supports_extended_thinking_on_bedrock(self, model: str) -> bool:
"opus_4", # Opus 4
"sonnet-4",
"sonnet_4", # Sonnet 4
"sonnet-4.6",
"sonnet_4.6",
"sonnet-4-6",
"sonnet_4_6",
"opus-4.6",
"opus_4.6",
"opus-4-6",
"opus_4_6",
]

return any(pattern in model_lower for pattern in supported_patterns)
Expand Down Expand Up @@ -251,6 +259,11 @@ def _supports_tool_search_on_bedrock(self, model: str) -> bool:
"opus_4.6",
"opus-4-6",
"opus_4_6",
#sonnet 4.6
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@greptile-apps greptile-apps bot Feb 18, 2026

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Missing space in comment

Minor formatting issue — existing comments in this list use # Opus 4.5 format (space after #), but this one uses #sonnet 4.6 without a space and without capitalization.

Suggested change
#sonnet 4.6
# Sonnet 4.6

"sonnet-4.6",
"sonnet_4.6",
"sonnet-4-6",
"sonnet_4_6",
]

return any(pattern in model_lower for pattern in supported_patterns)
Expand Down Expand Up @@ -285,7 +298,7 @@ def _get_tool_search_beta_header_for_bedrock(
programmatic_tool_calling_used or input_examples_used
):
beta_set.discard(ANTHROPIC_TOOL_SEARCH_BETA_HEADER)
if "opus-4" in model.lower() or "opus_4" in model.lower():
if self._supports_tool_search_on_bedrock(model):
beta_set.add("tool-search-tool-2025-10-19")

def _convert_output_format_to_inline_schema(
Expand Down Expand Up @@ -420,10 +433,8 @@ def transform_anthropic_messages_request(
beta_set=beta_set,
)

# --- Custom logic: if tool-search-tool-2025-10-19 is present, add tool-examples-2025-10-29 ---
if "tool-search-tool-2025-10-19" in beta_set:
beta_set.add("tool-examples-2025-10-29")
# ------------------------------------------------------------------------------

if beta_set:
anthropic_messages_request["anthropic_beta"] = list(beta_set)
Expand Down
31 changes: 31 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 @@ -8294,6 +8294,37 @@
"supports_vision": true,
"tool_use_system_prompt_tokens": 346
},
"us/claude-sonnet-4-6": {
"cache_creation_input_token_cost": 4.125e-06,
"cache_creation_input_token_cost_above_200k_tokens": 8.25e-06,
"cache_read_input_token_cost": 3.3e-07,
"cache_read_input_token_cost_above_200k_tokens": 6.6e-07,
"input_cost_per_token": 3.3e-06,
"input_cost_per_token_above_200k_tokens": 6.6e-06,
"litellm_provider": "anthropic",
"max_input_tokens": 200000,
"max_output_tokens": 64000,
"max_tokens": 64000,
"mode": "chat",
"output_cost_per_token": 1.65e-05,
"output_cost_per_token_above_200k_tokens": 2.475e-05,
"search_context_cost_per_query": {
"search_context_size_high": 0.01,
"search_context_size_low": 0.01,
"search_context_size_medium": 0.01
},
"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,
"tool_use_system_prompt_tokens": 346,
"inference_geo": "us"
},
"claude-sonnet-4-5-20250929-v1:0": {
"cache_creation_input_token_cost": 3.75e-06,
"cache_read_input_token_cost": 3e-07,
Expand Down
31 changes: 31 additions & 0 deletions model_prices_and_context_window.json
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -8294,6 +8294,37 @@
"supports_vision": true,
"tool_use_system_prompt_tokens": 346
},
"us/claude-sonnet-4-6": {
"cache_creation_input_token_cost": 4.125e-06,
"cache_creation_input_token_cost_above_200k_tokens": 8.25e-06,
"cache_read_input_token_cost": 3.3e-07,
"cache_read_input_token_cost_above_200k_tokens": 6.6e-07,
"input_cost_per_token": 3.3e-06,
"input_cost_per_token_above_200k_tokens": 6.6e-06,
"litellm_provider": "anthropic",
"max_input_tokens": 200000,
"max_output_tokens": 64000,
"max_tokens": 64000,
"mode": "chat",
"output_cost_per_token": 1.65e-05,
"output_cost_per_token_above_200k_tokens": 2.475e-05,
"search_context_cost_per_query": {
"search_context_size_high": 0.01,
"search_context_size_low": 0.01,
"search_context_size_medium": 0.01
},
"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,
"tool_use_system_prompt_tokens": 346,
"inference_geo": "us"
},
"claude-sonnet-4-5-20250929-v1:0": {
"cache_creation_input_token_cost": 3.75e-06,
"cache_read_input_token_cost": 3e-07,
Expand Down
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