ALTERNATIVES • CURATED

Claude Sonnet 4.5 Alternatives (2026)

We've curated 10 top llms AI tools that are alternatives to Claude Sonnet 4.5. Each tool is hand-picked for quality, reliability, and unique capabilities.

ALTERNATIVES
10 tools • curated

About Claude Sonnet 4.5

Anthropic's Sonnet-tier model announced on September 29, 2025, with major coding, instruction-following, and agentic improvements at the same price as Sonnet 4. The same announcement added the context editing feature and a memory tool to the Claude API.

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