claude-opus-4-1

This page lists parameters from the ModelFold model catalog.

Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains...

Overview

Field	Value
Model ID	claude-opus-4-1
Family slug	claude-opus-4-1
Modality	Chat Models (chat)
Endpoint	POST /v1/chat/completions

Request example

export API_BASE="https://modelfold.ai/v1"
export MODELFOLD_API_KEY="mf-..."   # 在控制台 API Key 页面创建
curl -X POST "$API_BASE/chat/completions" \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-opus-4-1","messages":[{"role":"user","content":"Explain what a diffusion model does in two sentences."}],"max_tokens":512}'

Related models

• Model overview
• See all 325 chat models models
• aion-2-0
• aion-3-0
• aion-3-0-mini
• aion-3-5
• aion-3-5-mini
• aion-rp-llama-3-1-8b

See also

• API reference