Claude Sonnet 5.5
by Vertex (Anthropic) · family claude-sonnet · listed Sep 2026RTV
Fast Claude model for everyday coding, agents, and knowledge work
Current rates USD per 1M tokens
Input$2.00
Output$10.00
Cache read$0.20
Cache write$2.50
Against the market
Input price vs. maker flagships ($/1M tokens)Output price vs. maker flagships ($/1M tokens)On the record
- Model id
claude-sonnet-5-5@default- Context window
- 1M tokens
- Max output
- 128K tokens
- Input modalities
- text, image, pdf
- Output modalities
- text
- Reasoning
- yes
- Tool calls
- yes
- Open weights
- no
- Knowledge cutoff
- Jun 2026
- Released
- 2026-09-28
- Last updated
- 2026-09-28
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