reroute

Anthropic: Claude Opus 4.5

anthropic/claude-opus-4.5
Compare API Try this model

Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...

Modalities
In / Out Price
$5 / $25 per 1M
Context
200K
Released
Nov 24, 2025
Knowledge Cutoff
—

API

Reroute speaks the OpenAI Chat Completions format. Point any OpenAI SDK at https://www.reroute.wtf/api/v1 and use anthropic/claude-opus-4.5 as the model.

You need an API key
Keys start with sk-rr-v1- and are shown once.
Create API key
curl https://www.reroute.wtf/api/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $REROUTE_API_KEY" \
  -d '{
  "model": "anthropic/claude-opus-4.5",
  "messages": [
    { "role": "user", "content": "What is the meaning of life?" }
  ]
}'

Streaming

Set stream: true to receive server-sent events. The final chunk carries usage and cost.

curl -N https://www.reroute.wtf/api/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $REROUTE_API_KEY" \
  -d '{ "model": "anthropic/claude-opus-4.5", "stream": true,
        "messages": [{ "role": "user", "content": "Count to five" }] }'