Claude Opus 5.5
New models ship as new constants in package releases.","displayNoNewLineWarning":false,"position":8,"left":88,"right":87},{"type":"ADDITION","blobLineNumber":88,"text":"+Constants mirror API model IDs (`.opus5_5` is `claude-opus-5-5`) and carry each model's capabilities. It takes precedence over the framework's per-request reasoning hints. The API defaults to `high` when no effort is sent:","html":" Pin a Claude effort level for every request with \u003cspan class=\"pl-s\"\u003e`\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003efixedEffort:\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e`\u003c/span\u003e.
- ▪New models ship as new constants in package releases.","displayNoNewLineWarning":false,"position":8,"left":88,"right":87},{"type":"ADDITION","blobLineNumber":88,"text":"+Constants mirror API model IDs (`.opus5_5` is `claude-opus-5-5`) and c
- ▪It takes precedence over the framework's per-request reasoning hints.
- ▪The API defaults to `high` when no effort is sent:","html":" Pin a Claude effort level for every request with \u003cspan class=\"pl-s\"\u003e`\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003efixedEffort:\u003c/span\u003e\u003cspan class=\"p
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| Original publisher | GitHub |
| Canonical URL | https://github.com/anthropics/ClaudeForFoundationModels/commit/5180901338a50bef050d5e9464583753ed3869a3 |
| Publication time | Tue, 22 Sep 2026 16:27:30 +0000 |
| Retrieval time | 2026-09-22T16:33:53.227Z |
| Last seen | 2026-09-22T16:33:53.227Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | None |
| Cluster logic | Not yet clustered, or no peer story found in the clustering window. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
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anthropics / ClaudeForFoundationModels Public Notifications You must be signed in to change notification settings Fork 29 Star 298 Code Issues 6 Pull requests 1 Actions Projects Security and quality 0 Insights Additional navigation options Code Issues Pull requests Actions Projects Security and quality Insights {"payload":{"commitRoute":{"commit":{"oid":"5180901338a50bef050d5e9464583753ed3869a3","url":"/anthropics/ClaudeForFoundationModels/commit/5180901338a50bef050d5e9464583753ed3869a3","authoredDate":"2026-09-17T17:14:24.000Z","committedDate":"2026-09-17T19:15:53.000Z","shortMessage":null,"shortMessageMarkdown":"\u003cdiv\u003efeat: add claude-opus-5-5\u003c/div\u003e","shortMessageMarkdownLink":null,"bodyMessageHtml":"","authors":[{"login":"dtmeadows-ant","displayName":"David…
Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.