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Claude Opus 4.5
by Anthropic · Language Models
Context 200K tokens
by Anthropic · Language Models
Claude Opus 4.5 is an Anthropic frontier model launched November 24, 2025, built for high-intelligence coding, agents and complex reasoning. It supports extended thinking and introduced a new effort parameter for controlling reasoning depth. Per Anthropic, it has a 200K-token context window, up to 64K max output tokens and a knowledge cutoff of March 2025, available through the Claude API, Amazon Bedrock, Google Vertex AI and Azure AI Foundry. Best suited for demanding reasoning, coding and agentic tasks where depth of thinking can be tuned.
$3.861 in · $19.305 out · $0.3861 cached / 1M
| Usage | Rate (USD) | Unit |
|---|---|---|
| Input tokens | $3.861 | per 1M tokens |
| Cached input (cache hit) | $0.3861 | per 1M tokens |
| Output tokens | $19.305 | per 1M tokens |
Official model pricing · currency: USD · pre-deduction settled by actual usage
OpenAI-compatible · base URL https://api.tunerouter.com/v1/
curl https://api.tunerouter.com/v1/chat/completions \
-H "Authorization: Bearer $TUNEROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "claude-opus-4-5-20251101", "messages": [{"role": "user", "content": "Hello!"}]}'Model ID: claude-opus-4-5-20251101 · works with OpenAI SDKs — just point base_url at api.tunerouter.com