Describe the problem/error/question
apparently you can’t use the claude 3.7 with enabled thinking in basic llm nodes.
An error occurs when executing the Anthropic Chat Model node (type: @n8n/n8n-nodes-langchain.lmChatAnthropic, version 1.3) configured to use the model “claude-3-7-sonnet-20250219” with the “thinking” option enabled. The attached workflow JSON reproduces the issue.
What is the error message (if any)?
{
“nodes”: [
{
“parameters”: {
“model”: {
“__rl”: true,
“mode”: “list”,
“value”: “claude-3-7-sonnet-20250219”,
“cachedResultName”: “Claude 3.7 Sonnet”
},
“options”: {
“thinking”: true
}
},
“type”: “@n8n/n8n-nodes-langchain.lmChatAnthropic”,
“typeVersion”: 1.3,
“position”: [
540,
220
],
“id”: “6728d52d-8b1f-4ea4-acb9-1666bb461812”,
“name”: “Anthropic Chat Model”,
“credentials”: {
“anthropicApi”: {
“id”: “6IpHJEoyxWoeAvSy”,
“name”: “hacheng1 Anthropic account”
}
}
}
],
“connections”: {
“Anthropic Chat Model”: {
“ai_languageModel”: [
]
}
},
“pinData”: {},
“meta”: {
“templateCredsSetupCompleted”: true,
“instanceId”: “f91b0b942f68abc36946915b0c9cffe661493bd31ec6576b820cb389080a2205”
}
}
Please share your workflow
{
"nodes": [
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
0,
0
],
"id": "54566109-d246-48c1-9f51-491481c9fcb1",
"name": "When clicking ‘Test workflow’"
},
{
"parameters": {
"promptType": "define",
"text": "give me the top 3 marketing strategies for dentists"
},
"type": "@n8n/n8n-nodes-langchain.chainLlm",
"typeVersion": 1.6,
"position": [
440,
0
],
"id": "c2b84b22-9f13-43bc-b3e3-becb4ee116ae",
"name": "Basic LLM Chain"
},
{
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "claude-3-7-sonnet-20250219",
"cachedResultName": "Claude 3.7 Sonnet"
},
"options": {
"thinking": true
}
},
"type": "@n8n/n8n-nodes-langchain.lmChatAnthropic",
"typeVersion": 1.3,
"position": [
540,
220
],
"id": "6728d52d-8b1f-4ea4-acb9-1666bb461812",
"name": "Anthropic Chat Model",
"credentials": {
"anthropicApi": {
"id": "6IpHJEoyxWoeAvSy",
"name": "hacheng1 Anthropic account"
}
}
}
],
"connections": {
"When clicking ‘Test workflow’": {
"main": [
[
{
"node": "Basic LLM Chain",
"type": "main",
"index": 0
}
]
]
},
"Anthropic Chat Model": {
"ai_languageModel": [
[
{
"node": "Basic LLM Chain",
"type": "ai_languageModel",
"index": 0
}
]
]
}
},
"pinData": {},
"meta": {
"templateCredsSetupCompleted": true,
"instanceId": "f91b0b942f68abc36946915b0c9cffe661493bd31ec6576b820cb389080a2205"
}
}
(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)
Share the output returned by the last node
Information on your n8n setup
- n8n version: 1.84.3
- Database (default: SQLite):
- n8n EXECUTIONS_PROCESS setting (default: own, main):
- Running n8n via (Docker, npm, n8n cloud, desktop app): selfhosted
- Operating system: mac os