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Claude Sonnet 4.5

The claude-sonnet-4-5-20250929 snapshot was deprecated on 2026-09-30 for retirement on 2026-11-30; it is not yet shut down at this review.

Marked deprecated by vendor

Vendor
Anthropic
Modality
textcode
Directory associations
12

Sources and review scope

Official identity and task scope checked

A specifically named model entry; the sources define what was checked.

Checks cover only the names and tasks supported by the linked sources. They do not verify benchmarks, rankings, licensing, or another tool's current configuration.

Checked:

Article updated:

Directory matching names

These names match legacy directory records; they are not automatically official aliases or identical snapshots.

Claude Sonnet 4.5claude-sonnet-4-5claude-sonnet-4-5-20250929

Tools with checked model relationships

GitHub CopilotCoding assistant with a free plan and agent mode
KagiAd-free search paid for by users

Unverified directory associations

Legacy links remain useful for discovery; they do not establish that a tool currently uses this model.

AWS Kiroturning requirements into executable specs for agentic engineering
CodeRabbitadding review and governance around agent-produced code
Clineusing one open agent in the editor and terminal
OpenHandsorganizing repetitive software-delivery steps as agent workflows
Qoderswitching between completion, chat and delegated development
Manus 2.0checking tasks currently executable by the Manus agent
Perplexity Cometcombining search and delegated web tasks in a browser
Diaturning tabs and work-tool context into briefings
Felousing multilingual search to understand information and create
OpenRouteraccessing different model services through one interface

Where it is used in this directory

Everything below is derived from tools already listed in this directory: 2 tools note Claude Sonnet 4.5, covering the media types, platforms, and output formats on this page. Check each tool's official documentation for capabilities and integration details.

Media types covered
Text GenerationCode Generation
Platforms of the tools that use it
VS CodeJetBrainsNeovimWebiOSAndroidBrowser extension
Output formats of the tools that use it
All languagesHTMLPDF

Related models

Other models from the same vendor or modality.

Claude Fable 5.1AnthropicOfficial identity and task scope checkedListed as available by vendorClaude Opus 5.5AnthropicOfficial identity and task scope checkedListed as available by vendorClaude Sonnet 5.5AnthropicOfficial identity and task scope checkedListed as available by vendorClaude Haiku 5.5AnthropicOfficial identity and task scope checkedListed as available by vendor

FAQ

What is Claude Sonnet 4.5?

The claude-sonnet-4-5-20250929 snapshot was deprecated on 2026-09-30 for retirement on 2026-11-30; it is not yet shut down at this review.

What kind of entry is this?

A specifically named model entry; the sources define what was checked.

Which tool relationships are checked or unverified?

Checked model relationships: GitHub Copilot, Kagi. There are also 10 unverified directory associations; they do not establish current usage.