AnthropicUse this model
Opus 4.8 API
A premium model for difficult reasoning, analysis, and agentic tasks.
Context
1M
Input
from $2.5 / 1M tokens
Output
from $12.5 / 1M tokens
deep reasoningagents
curl https://api.onemux.net/v1/chat/completions \
+ -H "Authorization: Bearer $ONEMUX_API_KEY" \
+ -H "Content-Type: application/json" \
+ -d '{"model":"gpt-4o","messages":[{"role":"user","content":"Hello OneMux"}]}'