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Anthropic
Claude Opus 4
Anthropic's most powerful model — frontier intelligence for the most complex research and coding.
Released
Context Window
200.0K
tokensMax Output
32.0K
tokensInput / 1M
$15.00
per 1M tokensOutput / 1M
$75.00
per 1M tokensCapabilities
Vision
Function Calling
Streaming
JSON Mode
System Prompt
Tool Use
Pricing Comparison
Quick Start
curl
curl -X POST https://api.nemorouter.ai/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer sk-your-api-key" \
-d '{
"model": "anthropic/claude-opus-4-20250514",
"messages": [
{"role": "system", "content": "You are a helpful assistant."},
{"role": "user", "content": "Hello!"}
],
"max_tokens": 256
}'Replace sk-your-api-key with your NemoRouter API key. Use anthropic/claude-opus-4-20250514 as the model identifier.