Claude Opus 5.5
vichar-opus-5.5
Anthropic Claude Opus 5.5, the strongest option for long agentic coding and analysis, with a 1M token context window.
- Context window
- 1M
- Max output
- 128k
- Input
- $4.00 /M tokens
- Output
- $20.00 /M tokens
Supported parameters
- max_tokens
- response_format
- reasoning_effort
- tools
- tool_choice
- reasoning
curl https://api.vichar.io/v1/chat/completions \
-H "Authorization: Bearer $VICHAR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "vichar-opus-5.5",
"messages": [{"role": "user", "content": "Hello"}]
}'