Anthropic: Claude Opus 4

AnthropicID: anthropic/claude-opus-4

Claude Opus 4 is benchmarked as the world’s best coding model, at time of release, bringing sustained performance on complex, long-running tasks and agent workflows. It sets new benchmarks in software engineering, achieving leading results on SWE-bench (72.5%) and Terminal-bench (43.2%). Opus 4 supports extended, agentic workflows, handling thousands of task steps continuously for hours without degradation. Read more at the [blog post here](https://www.anthropic.com/news/claude-4)

Pricing per 1M Tokens

Input (Prompt)$15
Output (Completion)$75
Cache Read$1.50
Cache Write$19
ImageN/A

Specifications

Context Length200K
Max Output Tokens32K
Input ModalitiesImage + Text + File
Output ModalitiesText
TokenizerClaude
Instruct TypeN/A
Top Provider Context200K
Top Provider Max Output32K
ModeratedYes

Compare this model

See how Anthropic: Claude Opus 4 stacks up against other models.

vs Anthropic: Claude Sonnet 4.6vs Anthropic: Claude Opus 4.6vs Anthropic: Claude Opus 4.5vs Anthropic: Claude Haiku 4.5vs Anthropic: Claude Sonnet 4.5

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Anthropic: Claude Haiku 4.5
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Anthropic: Claude Sonnet 4.5
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Last updated: March 23, 2026

First tracked: March 23, 2026