Claude Sonnet 5 developer decision guide. Sections: What changed from Sonnet 4.6 (agentic capabilities, tool use, longer output stability), Sonnet 5 vs Opus 4.8 vs DeepSeek V4 for coding tasks (decision matrix, not benchmark table), accessing Sonnet 5 via API (model ID: claude-sonnet-5, available on Claude API, Bedrock, Vertex AI), Claude Code integration (how Sonnet 5 performs as default CLI model), the August 31 pricing transition ($2/$10 intro → $3/$15 standard), and what ‘agentic’ means for your daily coding (real examples of Sonnet 5 autonomous workflow capabilities).
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Claude Sonnet 5: The Developer’s Guide to Anthropic’s New Default Model
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