Claude Sonnet 5

by Anthropic

Claude 5 family

Parameters

—

Context window

200K tokens

Released

2026-02-01

Input price / 1M tok

$3.00

Output price / 1M tok

$15.00

Modality

multimodal, vision, tools

About Claude Sonnet 5

Anthropic's next-gen mid-tier. Same context window as Opus but 5x cheaper and faster. Best price/performance for production RAG, chat, and coding workloads. Sonnet 5 outperforms the prior Sonnet 4 on almost every benchmark while keeping the same API contract.

Strengths

Excellent price/performance
Fast enough for interactive UX
Same 200K context as Opus
Native vision

Weaknesses

Slightly weaker at hardest reasoning vs Opus
No native audio
No open weights

Best for

Production chatbotsRAG assistantsCoding copilotsVision Q&A

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