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Claude Opus 4 Token Counter
Count tokens for Anthropic's Claude Opus 4. Get precise token counts, calculate API costs, and optimize prompts for the world's leading AI model for coding and complex agentic tasks.
How Claude Opus 4 Tokenization Works
The World's Best Coding Model
Claude Opus 4 is Anthropic's most powerful model and the best coding model in the world, leading on benchmarks like SWE-bench. It delivers sustained performance on long-running tasks that require focused effort and thousands of steps.
Hybrid Reasoning
Opus 4 features a hybrid model with near-instant responses and an “extended thinking” mode for deeper, step-by-step reasoning on complex problems.
Advanced Tool Use
The model can use tools like web search during extended thinking, alternating between reasoning and tool use to dramatically improve response quality.
Unleashing Agentic Capabilities
Claude Opus 4 is designed for sophisticated AI agents. It can handle long-running, high-context tasks like refactoring entire codebases, conducting independent research for hours, or orchestrating complex enterprise workflows with minimal oversight.
Premium Pricing for Frontier Performance
Claude Opus 4's pricing reflects its status as a frontier model, delivering state-of-the-art intelligence for the most demanding and mission-critical tasks.
Claude Opus 4 Pricing
Input Tokens
per 1 million tokens
Output Tokens
per 1 million tokens