Anthropic's flagship Claude 4 language model for coding and agents.
Anthropic's release of Claude Opus 4, a hybrid reasoning language model announced on May 22, 2025 as part of the Claude 4 launch. Anthropic described it as its most powerful model yet, optimized for coding, agentic search, and creative writing, with launch pricing of $15 per million input tokens and $75 per million output tokens.
Base token pricing from Anthropic’s official pricing pages; prompt caching write rate is $18.75/MTok and read rate is $1.50/MTok, with separate batch pricing available on the same pricing docs.
Anthropic’s official pricing pages list Claude Opus 4 as a current priced model with $15 per million input tokens and $75 per million output tokens. The same official pricing documentation also lists prompt-caching write/read rates for Opus 4, confirming the public token-based pricing.
Claude Code users reported steeper caps and week-long waits while sharing ways to cut usage, including /context audits, /clear, smaller models, and RTK log compression. The posts point to token burn from mounted MCP servers, long chat history, raw logs, and multi-agent concurrency, so teams may need to trim runtime load.
Public Anthropic draft posts described Claude Mythos as the company's most powerful model and placed a new Capybara tier above Opus 4.6. The documents also point to cybersecurity capability and compute cost as rollout constraints.
Anthropic made 1M-token context generally available for Opus 4.6 and Sonnet 4.6, removed the long-context premium, and raised media limits to 600 images or PDF pages. Use it for retrieval-heavy and codebase-scale workflows that previously needed beta headers or special long-context pricing.
