Claude Opus 4
Hybrid reasoning model for coding, advanced reasoning, and AI agents
Claude Opus 4 is a specific Anthropic model release introduced in May 2025 as part of the Claude 4 generation. Anthropic describes it as a hybrid reasoning large language model focused on coding, advanced reasoning, and AI agent workflows; the API model name was claude-opus-4-20250514 and it is now retired on Anthropic-operated platforms.
Pricing
All prices are USD per million tokens (MTok). The same row lists 5-minute cache writes at $18.75/MTok, 1-hour cache writes at $30/MTok, and cache hits & refreshes at $1.50/MTok; Claude Opus 4 is marked retired except on Google Cloud.
Anthropic's official Claude Platform pricing page lists Claude Opus 4 as retired except on Google Cloud and explicitly prices it at $15 per million base input tokens and $75 per million output tokens.