AI Model Watch
Models / Anthropic

Claude Opus 4.5

GA

API ID claude-opus-4-5-20251101 (alias claude-opus-4-5). Listed under 'Legacy models' on overview but Active in deprecations table. Extended thinking: Yes; adaptive thinking: No. 200k context (not 1M). Max output 64k. 5m cache $6.25, 1h cache $10, cache hits $0.50/MTok. Batch $2.50/$12.50. Reliable knowledge cutoff May 2025; training data cutoff Aug 2025. Snapshot date 20251101 implies a Nov 2025 release. Tentative retirement not sooner than November 24, 2026.

Provider
Anthropic
Status
GA
Input price
$5 / 1M tokens
Output price
$25 / 1M tokens
Cached input
$0.5 / 1M tokens
Blended price
$10 / 1M tokens
Context window
200,000 tokens (200K)
Max output
64,000 tokens
Modality
text, image, vision
Knowledge cutoff
2025-05
Released
—
API string
claude-opus-4-5-20251101

Source: Anthropic official documentation ↗

See also

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