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Sweep 28 Sep 2026 · 18:16Z Build v2.1.284 505 read Stable v2.1.277 Latest v2.1.284 Next v2.1.284 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Developer Platform 28 Sep 2026
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choosing-a-model changedabout-claude/models/choosing-a-model

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First seen 14 Aug 2026 this site's first read of the page
Recorded edits9to this page, all time

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6767| ------------------------------------------------------------------------- | ------------------------- | --------------------------------------------------------------------------------------------------------------------------------- |
6868| The highest available capability | Claude Fable 5.1 | Agent sessions that run for hours, multistep deep research, analysis carried through to a finished document, spreadsheet, or deck |
6969| Complex agentic coding and enterprise work | Claude Opus 5.5 | Multihour autonomous coding agents, large-scale refactoring, complex systems engineering, vision-heavy workflows, computer use |
70| Speed and capability for everyday coding, agent, and enterprise workloads | Claude Sonnet 5 | Code generation, data analysis, content creation, visual understanding, agentic tool use |
70| Speed and capability for everyday coding, agent, and enterprise workloads | Claude Sonnet 5.5 | Code generation, data analysis, content creation, visual understanding, agentic tool use |
7171| The lowest latency and price, with extended thinking | Claude Haiku 4.5 | Real-time applications, high-volume intelligent processing, cost-sensitive deployments needing strong reasoning, sub-agent tasks |
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107107 The latest Opus model: breaking changes, new features, and behavior differences
108108 </Card>
109109 
110 <Card title="What's new in Claude Sonnet 5.5" icon="sparkle" href="https://platform.claude.com/docs/en/models/sonnet-5-5/whats-new-sonnet-5-5">
111 The latest Sonnet model: breaking changes, new features, and behavior differences
112 </Card>
113 
110114 <Card title="What's new in Claude Sonnet 5" icon="sparkle" href="https://platform.claude.com/docs/en/models/sonnet-5/whats-new-sonnet-5">
111 For everyday workloads that balance speed and capability
115 New features and behavior changes in Claude Sonnet 5
112116 </Card>
113117 
114118 <Card title="Start building" icon="code" href="https://platform.claude.com/docs/en/get-started">
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