RELEASE EVIDENCE
Check this vendor claim before you install
Quote the claim, name one install, and write the questions the page leaves open.
anthropic.com published this account (2026-09-22): Anthropic introduced Claude Opus 5.5 (API id claude-opus-5-5) on 22 September 2026 at $4/$20 per million input/output tokens, $0.20 cache reads, $5 cache writes, and $8/$40 fast mode. Stated availability includes Claude Pro/Max/Team/Enterprise, the Claude Platform, AWS, Google Cloud, and Microsoft Foundry.
This guide uses that public page as the example. This site did not run the test, close the deal, or measure the product.
Write only what the page says
The page's claim is: Anthropic introduced Claude Opus 5.5 (API id claude-opus-5-5) on 22 September 2026 at $4/$20 per million input/output tokens, $0.20 cache reads, $5 cache writes, and $8/$40 fast mode. Stated availability includes Claude Pro/Max/Team/Enterprise, the Claude Platform, AWS, Google Cloud, and Microsoft Foundry.
Put the URL under that sentence. If a later recap adds a number or a date, keep the original page as the record.
Quote the claim, name one install, and write the questions the page leaves open.
Do the site's check on this one page. Fill a line only when the page supports it. Where the page is silent, write Not stated.
A finished note names the page, the date, and the limit of the claim. It does not borrow a result from a different story.
Stop at the untested line
Anything you did not open, install, or count stays untested. Leave that line visible.
Source page: Anthropic released Claude Opus 5.5 with lower Opus-class token prices.
Source: Anthropic released Claude Opus 5.5 with lower Opus-class token prices.