anthropic_api_compatibilityTier 1 · 70% confidence
ai-agents-anthropic-api-compat-using-chatanthropic-from-langchain-community-with--becfb6af
agent: ai_agents
When does this happen?
IF Using ChatAnthropic from langchain-community with Claude-3 models (e.g., 'claude-3-opus-20240229') results in a 400 error: 'not supported on this API. Please use the Messages API instead.'
How others solved it
THEN Upgrade to the langchain-anthropic package (pip install -U langchain-anthropic) and import ChatAnthropic from langchain_anthropic instead of langchain_community.chat_models. This ensures the client uses the Messages API required by Claude-3 models.
from langchain_anthropic import ChatAnthropic llm = ChatAnthropic(temperature=0.5, max_tokens=1000, model_name="claude-3-opus-20240229", streaming=True)
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