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Anthropic

Claude Opus 4.5

Claude Opus 4.5 from Anthropic — 200K-token context, multimodal vision, function calling.

Released

Context Window

200.0K

tokens
Max Output

8K

tokens
Input / 1M

$5.00

per 1M tokens
Output / 1M

$25.00

per 1M tokens

Capabilities

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-nemo-..." \
  -d '{
    "model": "claude-opus-4-5-20251101",
    "messages": [
      {"role": "system", "content": "You are a helpful assistant."},
      {"role": "user", "content": "Hello!"}
    ],
    "max_tokens": 256
  }'

Replace sk-nemo-... with your Nemo Router API key. Use claude-opus-4-5-20251101 as the model identifier.