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Pricing · Anthropic

Claude Opus 4.5

Anthropic's claude-opus-4-5-20251101, 200K tokens of context. Every number on this page was read off Anthropic's own pricing page — never estimated, never recalled from memory.

Status at Anthropic

Read on Anthropic's model page on September 30, 2026.

Pricing

Input $5.00 per 1M tokens
Output $25.00 per 1M tokens
Cached input $0.50 per 1M tokens · 0.1× the input price
Cache write (5 min TTL) $6.25 per 1M tokens
Cache write (1 h TTL) $10.00 per 1M tokens
Batch API −50% off input and output · verified September 16, 2026 against Anthropic's pricing page

At the calculator's starting volume, 1M input tokens and 200K output tokens with no cache hits, Claude Opus 4.5 costs $10.00: $5.00 for input and $5.00 for output, at the prices above. Same formula as the calculator; change the volume there.

Where this price sits

$5.00 per 1M input tokens is the 55th cheapest input price of the 67 current models with a verified price on this site, and the 6th of Anthropic's 14. Output costs 5.0× the input price.

Other current models in the Opus family:

Other price lists Anthropic publishes for Claude Opus 4.5

The prices above are Anthropic's Standard list, the one the table and the calculator use. Anthropic also sells Claude Opus 4.5 on one other list, each with a condition. Figures and wording are quoted from Anthropic's own pages as read on the date shown; this site computes none of them.

Recorded price changes

Every change this site has recorded for Claude Opus 4.5, with the date it took or takes effect and why. Corrections of our own reading are listed too, and say so.

Every price change recorded on this site →

Specifications

API model id claude-opus-4-5-20251101
Provider Anthropic
Family Opus
Context window 200K tokens
Max output 64K tokens
Released November 24, 2025
Status Current
Earliest retirement Not before November 24, 2026 — no firm date announced

Claude Opus 4.5 was released on November 24, 2025. It returns up to 64K tokens per response, against a context window of 200K tokens. Anthropic has committed not to retire it before November 24, 2026; no firm date is announced.

Questions about Claude Opus 4.5 pricing

How much does Claude Opus 4.5 cost per million tokens?
$5.00 per 1M input tokens and $25.00 per 1M output tokens, read on Anthropic's official pricing page on September 28, 2026.
What does a cached input token cost on Claude Opus 4.5?
$0.50 per 1M cached input tokens, 10% of the $5.00 input price; a 5-minute cache write costs $6.25, a 1-hour cache write costs $10.00 per 1M tokens.

Batch API discount (batchDiscount 0.5) verified by hand on 2026-09-16 against Anthropic's general pricing page, 'Batch processing' section: 'The Batch API allows asynchronous processing of large volumes of requests with a 50% discount on both input and output tokens', table row 'Claude Opus 4.5 $2.50 / MTok $12.50 / MTok'. Context window and max output read on Anthropic's model page (platform.claude.com/docs/en/models/opus-4-5/overview) on 2026-09-30: 'Claude Opus 4.5 This model Legacy | 200K | 64K | $5 / $25 |' ('Context window 200K tokens', 'Max output 64K tokens'). Release date corrected on 2026-09-30 from 2025-11-01 to 2025-11-24: Anthropic's model page (platform.claude.com/docs/en/models/opus-4-5/overview), read that day, prints 'Released November 24, 2025' (entry anthropic-opus-4-5-release-date-correction).

Verified September 28, 2026 against Anthropic's official pricing page. Confidence: confirmed. How the data is checked.

Other Anthropic models with a verified price

Cheaper or equally priced alternatives

Current models with an input price at or below $5.00 per 1M tokens.

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