Anthropic · LLM
Claude Sonnet 4.5
Anthropic's coding- and agent-focused flagship in the Claude 4 family.
Capabilities
- ▸agentic coding
- ▸computer use
Use cases
coding agents · automation
Lineage
View the full Claude lineage →Claude Sonnet 4.5 head-to-head comparisons
- Claude Sonnet 4.5 vs GPT-4oA 2025 coding-focused model against the 2024 fast multimodal workhorse: Sonnet 4.5 is far stronger on software work, GPT-4o is cheaper and quicker for everyday chat.
- GPT-5 vs Claude Sonnet 4.5GPT-5 and Claude Sonnet 4.5 target similar frontier assistant workloads but differ on context length, coding posture and agentic tooling.
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Sources & verification
Information is compiled from official announcements, documentation and reputable industry coverage.
Last verified Sep 10, 2026