Claude Sonnet 4.5
The previous mainstream model (September 2025), balanced across reasoning, writing, and coding, which took over Cursor-style defaults from Claude 3.5 Sonnet.
- Vendor
- Anthropic
- Modality
- textcode
- Tools using this model
- 12
Aliases and versions
Claude Sonnet 4.5claude-sonnet-4-5
Version lineage
- Earlier models it replaced
- Claude 3.5 SonnetClaude 3.5
Used by these tools
GitHub CopilotCoding assistant with a free plan and agent mode
AWS KiroSpec-driven agentic IDE from AWS
CodeRabbitLine-by-line AI pull-request review
ClineOpen-source VS Code agent, BYO keys
OpenHandsOpen-source autonomous SWE agent
QoderAgentic IDE with repo wiki and specs
ManusCredit-metered general purpose agent
Perplexity CometAI browser that acts inside pages
DiaAI browser acquired by Atlassian
FeloMultilingual answer engine with citations
KagiSubscription search engine with no ads
OpenRouterOne key, many models routing gateway
Where it is used in this directory
Everything below is derived from tools already listed in this directory: 12 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 Generation💻 Code Generation⚡ Productivity
- Platforms of the tools that use it
- VS CodeJetBrainsNeovimDesktopmacOSWindowsLinuxGitHubGitLabWebCLIAPIDockeriOSAndroidBrowser extension
- Output formats of the tools that use it
- All languagesCodeMarkdownJSONPDFXLSXHTMLPPTXTXT
Related models
Other models from the same vendor or modality.