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Update to support Claude Sonnet 4.5 as default model #528

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Update to support Claude Sonnet 4.5 as default model #528

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4 changes: 2 additions & 2 deletions backend/llm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ class Llm(Enum):
CLAUDE_3_5_SONNET_2024_06_20 = "claude-3-5-sonnet-20240620"
CLAUDE_3_5_SONNET_2024_10_22 = "claude-3-5-sonnet-20241022"
CLAUDE_3_7_SONNET_2025_02_19 = "claude-3-7-sonnet-20250219"
CLAUDE_4_SONNET_2025_05_14 = "claude-sonnet-4-20250514"
CLAUDE_4_5_SONNET_2025_09_29 = "claude-sonnet-4-5-20250929"
CLAUDE_4_OPUS_2025_05_14 = "claude-opus-4-20250514"
GEMINI_2_0_FLASH_EXP = "gemini-2.0-flash-exp"
GEMINI_2_0_FLASH = "gemini-2.0-flash"
Expand Down Expand Up @@ -57,7 +57,7 @@ class Completion(TypedDict):
Llm.CLAUDE_3_5_SONNET_2024_06_20: "anthropic",
Llm.CLAUDE_3_5_SONNET_2024_10_22: "anthropic",
Llm.CLAUDE_3_7_SONNET_2025_02_19: "anthropic",
Llm.CLAUDE_4_SONNET_2025_05_14: "anthropic",
Llm.CLAUDE_4_5_SONNET_2025_09_29: "anthropic",
Llm.CLAUDE_4_OPUS_2025_05_14: "anthropic",
# Gemini models
Llm.GEMINI_2_0_FLASH_EXP: "gemini",
Expand Down
2 changes: 1 addition & 1 deletion backend/models/claude.py
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Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,7 @@ async def stream_claude_response(
response = ""

if (
model_name == Llm.CLAUDE_4_SONNET_2025_05_14.value
model_name == Llm.CLAUDE_4_5_SONNET_2025_09_29.value
or model_name == Llm.CLAUDE_4_OPUS_2025_05_14.value
):
print(f"Using {model_name} with thinking")
Expand Down
16 changes: 7 additions & 9 deletions backend/routes/generate_code.py
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Original file line number Diff line number Diff line change
Expand Up @@ -359,13 +359,12 @@ def _get_variant_models(
gemini_api_key: str | None,
) -> List[Llm]:
"""Simple model cycling that scales with num_variants"""
claude_model = Llm.CLAUDE_4_5_SONNET_2025_09_29

claude_model = Llm.CLAUDE_3_7_SONNET_2025_02_19

# For text input mode, use Claude 4 Sonnet as third option
# For text input mode, use Claude 3.7 Sonnet as third option
# For other input modes (image/video), use Gemini as third option
if input_mode == "text":
third_model = Llm.CLAUDE_4_SONNET_2025_05_14
third_model = Llm.CLAUDE_3_7_SONNET_2025_02_19
else:
# Gemini only works for create right now
if generation_type == "create":
Expand Down Expand Up @@ -617,12 +616,11 @@ def _create_generation_tasks(
if self.anthropic_api_key is None:
raise Exception("Anthropic API key is missing.")

# For creation, use Claude Sonnet 3.7
# For updates, we use Claude Sonnet 3.5 until we have tested Claude Sonnet 3.7
# Use Sonnet 4.5 for both create and update tasks
if params["generationType"] == "create":
claude_model = Llm.CLAUDE_3_7_SONNET_2025_02_19
claude_model = Llm.CLAUDE_4_5_SONNET_2025_09_29
else:
claude_model = Llm.CLAUDE_3_5_SONNET_2024_06_20
claude_model = Llm.CLAUDE_4_5_SONNET_2025_09_29

tasks.append(
stream_claude_response(
Expand Down Expand Up @@ -956,4 +954,4 @@ async def stream_code(websocket: WebSocket):
pipeline.use(PostProcessingMiddleware())

# Execute the pipeline
await pipeline.execute(websocket)
await pipeline.execute(websocket)