Claude Opus 4.7

First of the new-tokenizer Opus line; superseded by Opus 4.8 but still active.

API model ID	`claude-opus-4-7`
Context window	1M tokens
Max output	128K tokens
Input price	$5 per million tokens
Output price	$25 per million tokens
Knowledge cutoff	Jan 2026
Released	Apr 16, 2026
Tokenizer generation	New (Opus 4.7+)
Status	Active

From the announcement

The tokenizer changed: the same input can map to roughly 1.0 to 1.35x more tokens depending on content.
Shipped higher-resolution vision.

Read Anthropic's announcement

Count tokens for Claude Opus 4.7 Estimate your monthly cost Check what fits in its context window

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