Implementation:Langchain ai Langchain Anthropic Model Profiles

Knowledge Sources	Langchain_ai_Langchain
Domains	LLM Framework, Anthropic, Model Configuration
Last Updated	2026-02-11 00:00 GMT

Overview

The _profiles.py module provides an auto-generated dictionary of Anthropic Claude model profiles, defining capability metadata such as token limits, supported input/output modalities, and feature flags for each model variant.

Description

This file is an auto-generated data module within the langchain-anthropic partner package. It contains a single dictionary _PROFILES that maps Claude model identifiers (e.g., "claude-opus-4-6", "claude-sonnet-4-5") to their capability profiles. These profiles are derived from the models.dev project and are generated by the langchain-profiles CLI tool. The data is consumed by ChatAnthropic to automatically configure model-specific settings.

Usage

This module is consumed internally by the langchain_anthropic package. It should not be imported directly by end users. The profiles are used to populate ModelProfile instances on ChatAnthropic.

Code Reference

Source Location

• Repository: Langchain_ai_Langchain
• File: libs/partners/anthropic/langchain_anthropic/data/_profiles.py
• Lines: 1-437

Signature

_PROFILES: dict[str, dict[str, Any]] = {
    "claude-opus-4-0": { ... },
    "claude-sonnet-4-5": { ... },
    "claude-haiku-4-5": { ... },
    # ... 22 model entries total
}

Import

# Internal usage only
from langchain_anthropic.data._profiles import _PROFILES

I/O Contract

Inputs

Name	Type	Required	Description
(none)	N/A	N/A	This is a data-only module with no function inputs

Outputs

Name	Type	Description
_PROFILES	dict[str, dict[str, Any]]	Dictionary mapping model name strings to their capability profile dictionaries

Profile Schema

Each model profile entry contains the following fields:

Field	Type	Description
max_input_tokens	int	Maximum number of input tokens (all models: 200,000)
max_output_tokens	int	Maximum number of output tokens (ranges from 4,096 to 128,000)
text_inputs	bool	Whether the model accepts text inputs
image_inputs	bool	Whether the model accepts image inputs
audio_inputs	bool	Whether the model accepts audio inputs
pdf_inputs	bool	Whether the model accepts PDF inputs
video_inputs	bool	Whether the model accepts video inputs
text_outputs	bool	Whether the model produces text outputs
image_outputs	bool	Whether the model produces image outputs
audio_outputs	bool	Whether the model produces audio outputs
video_outputs	bool	Whether the model produces video outputs
reasoning_output	bool	Whether the model supports extended thinking / reasoning
tool_calling	bool	Whether the model supports tool/function calling
image_url_inputs	bool	Whether the model accepts image URLs as inputs
pdf_tool_message	bool	Whether the model supports PDFs in tool messages
image_tool_message	bool	Whether the model supports images in tool messages
structured_output	bool	Whether the model supports structured output natively

Covered Models

The module includes profiles for 22 Claude model variants:

Model Family	Variants	Max Output Tokens	Reasoning
Claude Opus 4.6	claude-opus-4-6	128,000	Yes
Claude Opus 4.5	claude-opus-4-5, claude-opus-4-5-20251101	64,000	Yes
Claude Opus 4.1	claude-opus-4-1, claude-opus-4-1-20250805	32,000	Yes
Claude Opus 4.0	claude-opus-4-0, claude-opus-4-20250514	32,000	Yes
Claude Sonnet 4.5	claude-sonnet-4-5, claude-sonnet-4-5-20250929	64,000	Yes
Claude Sonnet 4.0	claude-sonnet-4-0, claude-sonnet-4-20250514	64,000	Yes
Claude Haiku 4.5	claude-haiku-4-5, claude-haiku-4-5-20251001	64,000	Yes
Claude 3.7 Sonnet	claude-3-7-sonnet-20250219, claude-3-7-sonnet-latest	64,000	Yes
Claude 3.5 Sonnet	claude-3-5-sonnet-20241022, claude-3-5-sonnet-20240620	8,192	No
Claude 3.5 Haiku	claude-3-5-haiku-latest, claude-3-5-haiku-20241022	8,192	No
Claude 3 Opus	claude-3-opus-20240229	4,096	No
Claude 3 Haiku	claude-3-haiku-20240307	4,096	No
Claude 3 Sonnet	claude-3-sonnet-20240229	4,096	No

Usage Examples

Basic Usage

# Internal usage within langchain_anthropic
from langchain_anthropic.data._profiles import _PROFILES

# Look up a model's profile
profile = _PROFILES.get("claude-sonnet-4-5")
print(profile["max_output_tokens"])  # 64000
print(profile["reasoning_output"])   # True
print(profile["tool_calling"])       # True

Related Pages

• AnthropicLLM implementation
• langchain_anthropic.chat_models.ChatAnthropic
• Auto-generated from models.dev project data