LLM7 model guide
LangChain with LLM7
Configure LangChain with LLM7: eligible models, setup instructions, and a copyable configuration.
Requirements and limitations
Only standard Chat Completions behavior is inferred. Provider-specific extensions and Responses API features are outside this template.
Setup
- Install the Python dependency with pip install langchain-openai.
- Set LLM7_API_KEY in your environment; the placeholder below must be replaced.
- Run the ChatOpenAI example. Bind tools only when the selected model reports tool support.
# Environment: LLM7_API_KEY=YOUR_LLM7_API_KEY
import os
from langchain_openai import ChatOpenAI
model = ChatOpenAI(
model="DeepSeek-V4-Flash-0731",
api_key=os.environ["LLM7_API_KEY"],
base_url="https://api.llm7.io/v1",
use_responses_api=False,
)
print(model.invoke("Hello!").content)| Model | Pricing | Context | Tool calling |
|---|---|---|---|
 | $0.02 USD input and $0.04 USD output per 1M tokens | 400,000 | Supported |
 | $1.00 USD input and $4.05 USD output per 1M tokens | 512,000 | Not supported |
| $0.50 USD input and $1.20 USD output per 1M tokens | 512,000 | Supported |
 | $0.04 USD input and $0.05 USD output per 1M tokens | 8,000 | Not supported |
 | $0.40 USD input and $2.00 USD output per 1M tokens | 256,000 | Supported |
| $1.00 USD input and $3.00 USD output per 1M tokens | 1,024,000 | Supported |
 | $4.50 USD input and $30.00 USD output per 1M tokens | 1,000,000 | Supported |
| $4.00 USD input and $15.00 USD output per 1M tokens | 1,000,000 | Supported |
| $0.04 USD input and $0.20 USD output per 1M tokens | 200,000 | Supported |
| $2.25 USD input and $12.19 USD output per 1M tokens | 1,000,000 | Supported |
| $2.50 USD input and $12.50 USD output per 1M tokens | 1,000,000 | Supported |
| $0.12 USD input and $0.45 USD output per 1M tokens | 1,000,000 | Supported |
| $0.45 USD input and $2.25 USD output per 1M tokens Minimum: $0.000784/request | 1,000,000 | Supported |
 | $0.01 USD input and $0.02 USD output per 1M tokens | 32,000 | Supported |
| $0.06 USD input and $0.18 USD output per 1M tokens | 1,024,000 | Supported |
| $0.18 USD input and $0.60 USD output per 1M tokens | 1,000,000 | Supported |
| $1.11 USD input and $3.33 USD output per 1M tokens | 1,000,000 | Supported |
 | $0.03 USD input and $0.08 USD output per 1M tokens | 1,048,576 | Supported |
| $0.02 USD input and $0.04 USD output per 1M tokens | 256,000 | Supported |
| $0.06 USD input and $0.30 USD output per 1M tokens | 1,000,000 | Supported |
| $0.05 USD input and $0.15 USD output per 1M tokens | 1,000,000 | Supported |
| gemma4:31b | $0.07 USD input and $0.23 USD output per 1M tokens | 262,000 | Supported |
 | $0.50 USD input and $2.00 USD output per 1M tokens | 1,000,000 | Supported |
| $0.15 USD input and $0.55 USD output per 1M tokens | 1,048,576 | Supported |
 | $0.20 USD input and $1.00 USD output per 1M tokens Minimum: $0.0001/request | 1,050,000 | Supported |
| $0.45 USD input and $0.58 USD output per 1M tokens | Unknown context | Supported |
| $1.92 USD input and $5.40 USD output per 1M tokens | 1,000,000 | Supported |
| $0.24 USD input and $1.00 USD output per 1M tokens | 1,000,000 | Supported |
| $5.00 USD input and $10.00 USD output per 1M tokens | 1,000,000 | Supported |
  | $0.30 USD input and $1.00 USD output per 1M tokens | 500,000 | Supported |
| $0.40 USD input and $0.50 USD output per 1M tokens | 500,000 | Supported |
  | $2.00 USD input and $10.00 USD output per 1M tokens | 1,000,000 | Supported |
| llama-4-maverick | $0.19 USD input and $0.75 USD output per 1M tokens | 1,048,576 | Supported |
 | $0.03 USD input and $0.05 USD output per 1M tokens | 180,000 | Supported |
| $0.03 USD input and $0.03 USD output per 1M tokens | 128,000 | Not supported |
| $0.06 USD input and $0.08 USD output per 1M tokens | 32,000 | Not supported |
 | $0.10 USD input and $0.40 USD output per 1M tokens | 250,000 | Supported |
Instructions reviewed 2026-09-14. Sources: LangChain documentation 1
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