Claude 4 Shutdown: Fix Your App in 5 Minutes

🔗 LangChain Easy — 1 line change

LangChain's ChatAnthropic class works identically with Opus 4.8. Just change the model name.

from langchain_anthropic import ChatAnthropic

llm = ChatAnthropic(
    model="claude-4-opus-20250514",
    temperature=0
)
response = llm.invoke("Hello!")

from langchain_anthropic import ChatAnthropic

llm = ChatAnthropic(
    model="claude-opus-4-8-20260615",
    temperature=0
)
response = llm.invoke("Hello!")

Switching to a different provider? Here's how to use GPT-5 with LangChain instead:

from langchain_openai import ChatOpenAI

llm = ChatOpenAI(
    model="gpt-5",
    temperature=0
)

Or switch to DeepSeek (99% cheaper):

from langchain_openai import ChatOpenAI

llm = ChatOpenAI(
    model="deepseek-v4-flash",
    base_url="https://api.deepseek.com/v1",
    api_key=os.environ["DEEPSEEK_API_KEY"],
    temperature=0
)

Don't forget: Run pip install --upgrade langchain-anthropic to get the latest model IDs.

📸 LlamaIndex Easy — 1 line change

LlamaIndex uses the same Anthropic LLM class. Update the model name and you're done.

from llama_index.llms.anthropic import Anthropic

llm = Anthropic(
    model="claude-4-opus-20250514",
    temperature=0
)

from llama_index.llms.anthropic import Anthropic

llm = Anthropic(
    model="claude-opus-4-8-20260615",
    temperature=0
)

Using LlamaIndex with OpenAI instead:

from llama_index.llms.openai import OpenAI

llm = OpenAI(model="gpt-5", temperature=0)

🧠 Anthropic Python/Node.js SDK Easy — 1 line change

The official Anthropic SDK is the most common way to use Claude. The fix is identical for Python and Node.js.

Python

import anthropic

client = anthropic.Anthropic()
message = client.messages.create(
    model="claude-4-opus-20250514",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)

import anthropic

client = anthropic.Anthropic()
message = client.messages.create(
    model="claude-opus-4-8-20260615",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)

Node.js

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic();
const message = await client.messages.create({
  model: "claude-4-opus-20250514",
  max_tokens: 1024,
  messages: [
    { role: "user", content: "Hello!" }
  ]
});

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic();
const message = await client.messages.create({
  model: "claude-opus-4-8-20260615",
  max_tokens: 1024,
  messages: [
    { role: "user", content: "Hello!" }
  ]
});

Tip: If you have the model ID in an environment variable, update it there:

# .env file
ANTHROPIC_MODEL=claude-opus-4-8-20260615

Then reference it in code:

model = os.environ.get("ANTHROPIC_MODEL", "claude-opus-4-8-20260615")

▲ Vercel AI SDK Easy — 1 line change

The Vercel AI SDK's Anthropic provider supports Opus 4.8 out of the box. Update the model ID in your provider config.

import { anthropic } from "@ai-sdk/anthropic";
import { generateText } from "ai";

const result = await generateText({
  model: anthropic("claude-4-opus-20250514"),
  prompt: "Hello!"
});

import { anthropic } from "@ai-sdk/anthropic";
import { generateText } from "ai";

const result = await generateText({
  model: anthropic("claude-opus-4-8-20260615"),
  prompt: "Hello!"
});

Switching to OpenAI with Vercel AI SDK:

import { openai } from "@ai-sdk/openai";
import { generateText } from "ai";

const result = await generateText({
  model: openai("gpt-5"),
  prompt: "Hello!"
});

Using Google Gemini:

import { google } from "@ai-sdk/google";
import { generateText } from "ai";

const result = await generateText({
  model: google("gemini-3-flash"),
  prompt: "Hello!"
});

👥 CrewAI Medium — Update agent config

CrewAI agents are configured with model names. Update the llm parameter in your agent definitions.

from crewai import Agent, Task, Crew

researcher = Agent(
    role="Research Analyst",
    goal="Research AI trends",
    llm="claude-4-opus-20250514",
    verbose=True
)

from crewai import Agent, Task, Crew

researcher = Agent(
    role="Research Analyst",
    goal="Research AI trends",
    llm="claude-opus-4-8-20260615",
    verbose=True
)

Using a non-Anthropic model in CrewAI:

from crewai import Agent

# Using GPT-5
researcher = Agent(
    role="Research Analyst",
    llm="gpt-5",
    verbose=True
)

# Using DeepSeek (cheapest option)
writer = Agent(
    role="Content Writer",
    llm="deepseek-v4-flash",
    verbose=True
)

🏗️ Haystack Easy — Update component config

Haystack's Anthropic integration uses a component-based approach. Update the model name in your pipeline.

from haystack.components.generators.chat import AnthropicChatGenerator

generator = AnthropicChatGenerator(
    model="claude-4-opus-20250514"
)

from haystack.components.generators.chat import AnthropicChatGenerator

generator = AnthropicChatGenerator(
    model="claude-opus-4-8-20260615"
)

🌐 OpenAI SDK (Cross-Provider Migration) Medium — New SDK + config

If you're migrating from Claude to OpenAI (GPT-5), you'll need to switch SDKs entirely. The code structure is similar but requires a few more changes.

import anthropic

client = anthropic.Anthropic()
message = client.messages.create(
    model="claude-4-opus-20250514",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)
print(message.content[0].text)

from openai import OpenAI

client = OpenAI()
response = client.chat.completions.create(
    model="gpt-5",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)
print(response.choices[0].message.content)

Key differences:

• messages.create() → chat.completions.create()
• message.content[0].text → response.choices[0].message.content
• API key env var: ANTHROPIC_API_KEY → OPENAI_API_KEY
• System prompt: pass as first message with role: "system"

🌊 Langflow Easy — Update node config

In Langflow, click on the Anthropic node and update the model name in the configuration panel.

{
  "type": "Anthropic",
  "model": "claude-4-opus-20250514",
  "temperature": 0
}

{
  "type": "Anthropic",
  "model": "claude-opus-4-8-20260615",
  "temperature": 0
}