Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...
Specifications
| Provider | Anthropic |
|---|---|
| Intelligence Index | 56.0 (Artificial Analysis) |
| Context window | 1,000,000 tokens (1M) |
| Input price | $2 / 1M tokens |
| Output price | $10 / 1M tokens |
| Input modalities | text, image, file |
| Output modalities | text |
| Model ID | anthropic/claude-sonnet-5.5 |
Pricing is per 1M tokens, indicative pricing via OpenRouter (updated 2026-10-01); a provider's own list price may differ. Intelligence Index via Artificial Analysis.
Frequently asked questions
How capable is Claude Sonnet 5.5?
Claude Sonnet 5.5 scores 56.0 on the Artificial Analysis Intelligence Index, an aggregate of reasoning, knowledge, coding, and math benchmarks (higher is better). Compare it head-to-head with other models on the comparison pages below, or run it against them directly on Vincony.
How much does Claude Sonnet 5.5 cost?
Indicative pricing (via OpenRouter, updated 2026-10-01) is $2 per 1M input tokens and $10 per 1M output tokens. A provider's own list price may differ. On Vincony, Claude Sonnet 5.5 is available on credit-based pricing alongside 750+ other models.
What is Claude Sonnet 5.5's context window?
Claude Sonnet 5.5 supports a context window of up to 1,000,000 tokens (1M), which is how much text it can consider at once.
Who makes Claude Sonnet 5.5?
Claude Sonnet 5.5 is built by Anthropic. You can access it — and compare it against other providers' models — through Vincony's multi-model platform.
How do I use Claude Sonnet 5.5?
You can use Claude Sonnet 5.5 directly through Anthropic, or via Vincony, which aggregates 750+ models (including Claude Sonnet 5.5) into one interface with side-by-side comparison and credit-based pricing.