Anthropic's frontier language model release for coding, agents, and reasoning.
Anthropic's Claude Opus 4.5 is a language model release announced on 2025-11-24, available on Anthropic apps, API, and major cloud platforms. Anthropic's docs list the Claude API ID as claude-opus-4-5-20251101, pricing at $5 input / $25 output per million tokens, and a 200k-token context window.
Standard API pricing from Anthropic’s first-party docs; prompt caching cache-hit/refresh price is listed separately at $0.50 per MTok.
Anthropic’s official pricing docs list Claude Opus 4.5 at $5 per 1M input tokens and $25 per 1M output tokens in USD, with cache hits & refreshes priced at $0.50 per 1M tokens. Anthropic’s launch announcement also states pricing is now $5/$25 per million tokens.
