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7/20/2026
Claude 3.5 Sonnet is the New Default Workhorse

Claude 3.5 Sonnet is the New Default Workhorse

Short summary

Claude 3.5 Sonnet outperforms Claude 3 Opus on reasoning and coding benchmarks while running at twice the speed and significantly lower cost ($3/M input, $15/M output). It solved 64% of internal coding eval problems versus Opus's 38%, making complex agentic workflows viable in production. Anthropic also launched Artifacts on Claude.ai, a side panel for iterating on generated code and designs in real time.

  • •Claude 3.5 Sonnet beats Opus on reasoning and coding at 2x speed and lower cost
  • •Pricing at $3/M input and $15/M output tokens with 200K context window
  • •Artifacts feature provides a dedicated workspace for iterating on generated code and designs

Generated with AI, which can make mistakes.

#product-launch#ai-tools#ai-agents#open-source
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