All Claude Models in late 2025: complete list for web app, API, cloud platforms, and pro workflows

Claude’s model ecosystem in late 2025 is built around a structured hierarchy of Haiku, Sonnet, and Opus, each aligned with a different level of capability, access, and professional use. Anthropic distributes Claude across web, mobile, API, and enterprise environments, with each channel exposing specific model variants. In this landscape, Haiku 4.5 functions as the default free-tier model, Sonnet 4.5 powers professional and technical workloads, and Opus remains the high-capability frontier model for enterprise-level reasoning and extended tool use. The complete model list reflects a clear tiered strategy that aligns capacity, context, collaboration features, and compute cost.

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Claude’s 2025 model lineup is structured into Haiku, Sonnet, and Opus, with availability determined by plan type and product surface.

Anthropic organizes its models into a three-tier structure intended to help users select their preferred performance class. Haiku 4.5 is optimized for speed and general tasks; Sonnet 4.5 provides advanced coding, analysis, and agentic reasoning; and Opus offers the highest contextual depth and accuracy for complex projects. The models deployed in the web app, API, and enterprise layers reflect this progression and govern which capabilities users can access across free, Pro, Team, and Max plans.

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Claude Model Classes — late 2025

Model	Capability Tier	Primary Use	Availability
Haiku 4.5	Entry / Free	Everyday tasks, casual use	Web & mobile free tier
Sonnet 4.5	Professional	Coding, long context, agents	Pro, Team, API
Opus (4.x)	Frontier	Deep reasoning, enterprise use	Max, Enterprise
Legacy Haiku	Basic	Legacy support	Limited availability
Legacy 3.x	Historical	Deprecating	API-only in some cases

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The web and mobile Claude app expose Haiku 4.5 to free-tier users while unlocking Sonnet 4.5 and Opus for Pro, Team, and Max plans.

In the consumer-facing Claude app, Anthropic configures the available models based on user subscription level. Free users access Haiku 4.5 as the default model. Pro subscribers unlock Sonnet 4.5 for more capable analysis and coding tasks. Team and Max plans offer Sonnet 4.5 at scale, with Opus available in the highest tier. This ensures that everyday users have fast, reliable access, while professionals gain enhanced depth, multimodal reasoning, and longer document-handling capabilities.

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Claude App Model Availability

Plan	Default Model	Upgraded Models	Notes
Free	Haiku 4.5	None	Core capabilities
Pro	Sonnet 4.5	Occasional Opus previews	Advanced tasks
Team	Sonnet 4.5	Admin-controlled upgrades	Multi-user workflows
Max / Enterprise	Opus	Sonnet & Haiku fallback	High-end reasoning

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The API exposes Haiku, Sonnet, and Opus in structured endpoints, with Sonnet 4.5 positioned as the primary production model.

Developers using the Claude API interact with models through structured endpoints that reflect the full Anthropic hierarchy. Haiku provides lightweight, low-cost inference for everyday workloads; Sonnet 4.5 is treated as the mainline production model; and Opus endpoints remain available for strategic enterprise and research projects. API users select models based on performance, cost, and context requirements, with Sonnet 4.5 serving as the default backbone for scalable workloads.

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Claude API Model Endpoints — late 2025

Model Endpoint	Capability	Context Depth	Typical Use
Haiku 4.5	Fast, economical	Medium	Chatbots, utilities
Sonnet 4.5	Advanced reasoning	Long	Coding, agents, documents
Opus	Frontier-level	Largest	Enterprise analysis
Legacy Haiku	Basic	Limited	Backward compatibility
Legacy 3.x	Low	Very limited	Migration contexts

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Cloud and enterprise deployments incorporate Claude through platform integrations, typically powered by Sonnet 4.5 or Opus depending on organizational needs.

Enterprises using Claude through cloud platforms—whether directly via Anthropic’s enterprise suite or through integrated third-party cloud systems—generally receive access to Sonnet 4.5 as the standard model for organizational workflows. Opus is deployed in scenarios requiring maximum precision, long-context planning, or high-stakes interpretive accuracy. These environments include administrative controls, policy frameworks, and usage dashboards designed for compliance, auditability, and multi-user governance.

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Claude in Cloud and Enterprise Platforms

Deployment Type	Model Used	Purpose	Notes
Enterprise Cloud	Sonnet 4.5	Org-wide tasks	Standard tier
Enterprise Advanced	Opus	Strategic, high-stakes	Max plan
Partner Integrations	Sonnet or Haiku	Embedded AI	Depends on partner
Developer Cloud Tools	Haiku or Sonnet	Prototyping	Scalable endpoints

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Professional and team environments rely heavily on Sonnet 4.5 for coding, multi-file workflows, and extended tool use across collaborative contexts.

In Pro and Team workflows, Sonnet 4.5 is the primary model supporting large context windows, agentic execution, file interpretation, and multi-modal reasoning. These environments include features such as shared seats, multi-user project memory, versioned workspaces, and enhanced safety layers. Opus can be enabled for complex analysis or strategic consulting scenarios, while Haiku remains available for lightweight tasks that do not require advanced reasoning.

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Professional Workflow Model Distribution

Plan	Main Model	Secondary Models	Target Workflows
Pro	Sonnet 4.5	Haiku, occasional Opus	Coding, research
Team	Sonnet 4.5	Haiku fallback	Collaboration, shared context
Max	Opus	Sonnet	High-end reasoning
Enterprise Custom	Sonnet / Opus	Configurable	Regulated industries

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Anthropic’s full model ecosystem in 2025 reflects a tiered and structured design that aligns capability, cost, and context with user needs.

Haiku 4.5 establishes an accessible free baseline; Sonnet 4.5 drives professional user scenarios; and Opus anchors advanced enterprise and strategic applications. With distinct model surfaces across the web app, API endpoints, and cloud deployments, the entire Claude lineup supports a predictable, scalable progression from everyday assistance to frontier-grade analysis. The tiered model strategy ensures users understand not only what each model can do but also where each one fits within personal, professional, and enterprise workflows.

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