57 pages for claude-sonnet-4-5-20250929.
Titles and paths first, then pages whose text carries it. Each row opens that page as this site last read it.
overview
Claude Developer Platform · in the page
release-notes/overview
…ion`. * We announced the deprecation of the Claude Sonnet 4.5 model (`claude-sonnet-4-5-20250929`), with retirement on the Claude API scheduled for November 30, 2026. We recommend migrating to [Claude…
claude-haiku-4-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-haiku-4-5
…5, the exact model strings for which are 'claude-opus-4-5-20251101', 'claude-sonnet-4-5-20250929', and 'claude-haiku-4-5-20251001' respectively.** Claude is accessible via Claude Code, a command line…
claude-opus-4-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-4-5
…5, the exact model strings for which are 'claude-opus-4-5-20251101', 'claude-sonnet-4-5-20250929', and 'claude-haiku-4-5-20251001' respectively. Claude is accessible via Claude Code, a command line to…
claude-opus-4-6
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-4-6
…Haiku 4.5, the exact model strings for which are 'claude-opus-4-6', 'claude-sonnet-4-5-20250929', and 'claude-haiku-4-5-20251001' respectively. Claude is accessible via Claude Code, a command line to…
claude-sonnet-4-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-4-5
…5, the exact model strings for which are 'claude-opus-4-5-20251101', 'claude-sonnet-4-5-20250929', and 'claude-haiku-4-5-20251001' respectively.** Claude is accessible via Claude Code, a command line…
Claude Code on Amazon Bedrock
Claude Code CLI · in the page
amazon-bedrock
…` region | | Small/fast model | Sonnet 4.5, for example `us.anthropic.claude-sonnet-4-5-20250929-v1:0` in a `us-*` region | Background tasks such as session title generation use the small/fast model,…
Model configuration
Claude Code CLI · in the page
model-config
…rsion prefix such as `claude-sonnet-4-5`, or a full model ID such as `claude-sonnet-4-5-20250929`. A version prefix also matches later model IDs that extend it with another segment, so `claude-fable-5…