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  • Release: Claude 3.5 Sonnet was released by Anthropic as part of their Claude 3.5 model family.

  • Performance: It is twice as fast as the previous Claude 3 Opus model and offers substantial improvements in intelligence, speed, and cost-effectiveness.

  • Capabilities: Claude 3.5 Sonnet excels in writing, editing, and executing program code, and is particularly adept at understanding nuance, humor, and complex instructions.

  • Languages: The model has strong comprehension and fluency in multiple languages, including Japanese.

  • Availability: Claude 3.5 Sonnet is available for free on and the Claude iOS app, with higher rate limits for Pro and Team plan subscribers.

  • Use Cases: Ideal for complex tasks such as context-sensitive customer support, orchestrating multistep workflows, and updating legacy applications.

Release Date [1]

  • Announcement: Claude 3.5 Sonnet was announced by Anthropic on a Thursday.

  • Timeline: It is the first model in the updated Claude 3.5 family, with Haiku and Opus to follow later in the year.

  • Previous Models: Claude 3 Opus was released in March 2024.

Performance [2]

  • Speed: Claude 3.5 Sonnet operates at twice the speed of Claude 3 Opus.

  • Cost: It is more cost-effective, making it ideal for large-scale deployments.

  • Benchmarks: Outperforms competitors like OpenAI's GPT-4o and Google's Gemini 1.5 on key evaluations.

Capabilities [3]

  • Writing: Exceptional at writing high-quality content with a natural, relatable tone.

  • Coding: Adept at code translations, making it effective for updating legacy applications.

  • Complex Instructions: Shows marked improvement in understanding nuance, humor, and complex instructions.

Languages [1]

  • Japanese: Claude 3.5 Sonnet has strong comprehension and fluency in Japanese.

  • Other Languages: Also proficient in Spanish, French, German, Italian, Dutch, and Russian.

Availability [4]

  • Free Access: Available for free on and the Claude iOS app.

  • Subscription Plans: Higher rate limits for Pro and Team plan subscribers.

  • API: Available via the Anthropic API, Amazon Bedrock, and Google Cloud's Vertex AI.

Use Cases [2]

  • Customer Support: Ideal for context-sensitive customer support.

  • Workflows: Effective in orchestrating multistep workflows.

  • Legacy Applications: Useful for updating legacy applications and migrating codebases.

  • Sales: Product recommendations, forecasting, and targeted marketing.

  • Data Processing: Search and retrieval over vast amounts of knowledge.

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