Claude Haiku 5.5
Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we’ve ever released.Claude Haiku 5.5 is designed for high-volume, cost-sensitive tasks. It reliably handles quick and repetitive workloads (like summaries, compactions, database queries, and classification requests). It pairs well with Opus 5.5 and Sonnet 5.5 as a subagent on coding work.
- ▪Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we’ve ever released.Claude Haiku 5.5 is designed for high-volume, cost-sensitive tasks.
- ▪It reliably handles quick and repetitive workloads (like summaries, compactions, database queries, and classification requests).
- ▪It pairs well with Opus 5.5 and Sonnet 5.5 as a subagent on coding work.
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Story provenance
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Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | Anthropic |
| Canonical URL | https://www.anthropic.com/claude-haiku-5-5 |
| Publication time | Wed, 07 Oct 2026 18:01:32 +0000 |
| Retrieval time | 2026-10-07T20:57:28.885Z |
| Last seen | 2026-10-07T20:57:38.091Z |
| 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 |
Rights status (four layers)
WeSearch handling by dimension
| 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.
Opening excerpt (first ~120 words) tap to expand
Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we’ve ever released.Claude Haiku 5.5 is designed for high-volume, cost-sensitive tasks. It reliably handles quick and repetitive workloads (like summaries, compactions, database queries, and classification requests). It pairs well with Opus 5.5 and Sonnet 5.5 as a subagent on coding work. And, since it’s also our fastest model to date, it works especially well for speed-sensitive tasks like live customer support and browser use.¹Haiku 5.5 is available at a much lower price than Haiku 4.5. On average, it now costs around 75% less to run.²Along with this launch, we’re making improvements to the value of our model range.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Anthropic.
