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AI model family

Claude 5 model family

Anthropic's Claude 5 family, documented for text and image input, multilingual work, and multiple hosted deployment surfaces.

Editorially reviewedVerified 2026-08-112 official or primary sources

What the family record covers

Anthropic documents Claude as a model family with separate current models for different workload profiles. Current models accept text and image input and return text, but their identifiers, reasoning behavior, cloud availability, and lifecycle rules must be checked independently.

Do not infer the model behind a Claude product session from the product name alone. For evaluation, record the API model identifier or product surface and separate vendor descriptions from observed task results.

Documented access paths

  • Claude API
  • Documented cloud-platform distribution, subject to model and region availability
  • Distinct model identifiers for different capability and latency profiles

Capabilities to verify

  • Long-document instruction adherence and evidence traceability
  • Coding or agentic task completion under bounded permissions
  • Image interpretation on domain-specific visual material
  • Behavior consistency across the exact first-party or cloud endpoint in scope

Decision questions

  1. Which Claude model ID and hosting surface will be approved?
  2. Does the workload benefit from a capability-oriented model or a faster operating profile?
  3. How will the team retest before a model migration or deprecation date?

Evaluation cautions

  • Claude product access and Claude API model access are different decision surfaces.
  • Cloud identifiers and routing choices can differ from first-party API identifiers.
  • Published context or capability limits do not prove reliability across a full document set.

Related decisions

Move from a family name to the product, provider, workflow, comparison, or protocol that defines the real choice.

Sources checked

Open the original pages before relying on a time-sensitive product decision.

  1. Claude models overviewAnthropic
  2. Claude model IDs and versioningAnthropic
Version · v4.3.4-indexnow-root-proof

Latest releases

IndexNow root-proof request compatibility

After v4.3.3, the exact root-level {key}.txt proof returned HTTP 200, but a full request carrying keyLocation still returned HTTP 403; a minimal homepage request with the same production key and no keyLocation returned HTTP 202. This release omits that field, while the automatic full run and idempotent rerun remain deployment checks.

IndexNow key-proof compatibility

Changed IndexNow verification to the official root-level {key}.txt convention after the first production notification returned HTTP 403; revalidation remains pending, while the website, sitemaps, and Bing sitemap processing are unaffected.

Bing sitemap discovery and IndexNow change notifications

Prepared canonical sitemap discovery for Bing and added automatic IndexNow change notifications while keeping segmented sitemaps authoritative and making no claim that a notified URL has been crawled or indexed.

View all releases