Claude Sonnet 5.5
Release Date: Sept 28, 2026 Creator: Anthropic
Claude Sonnet 5.5 is faster and cheaper than Opus 5.5, best suited for everyday tasks, bug fixes, working with documents and agentic workflows.
Access Claude Sonnet 5.5 securely with complete privacy. Our local-first approach means your text chats and prompts are stored exclusively on your browser via IndexedDB, never on a remote server. When you delete a chat, it is permanently wiped locally, and we ensure zero prompt training is used across all model endpoints.
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| Model Specifications | ||
|---|---|---|
| Knowledge Cutoff | June 2026 | N/A |
| Context (VividLLM) | 128,000 Tokens | N/A |
| With a context window of 128,000 tokens, this model can 'remember' and analyze up to 192 pages of data at once. This makes it a top choice for debugging entire codebases and summarizing full-length books. | ||
| Context (Native) | 1,000,000 Tokens | N/A |
| Input Modalities | TextImagePDF | TextImagePDF |
| Tool Calling | yes | N/A |
| Output Type | Text | Text |
| Default Max Output | 8192 | 8192 |
| Input Weight | 1.000 x (Pro) | N/A |
| Output Weight | 1.667 x (Pro) | N/A |
Disclaimer: We are providing Image Upload options to only limit models as of now, so some models which have image upload options might now have that feature on our site.