# Claude Sonnet 4

`claude-sonnet-4-20250514` — **anthropic** · CHAT

> Claude Sonnet 4 (claude-sonnet-4-20250514) is a chat model from anthropic with a 200K-token context window; proprietary (API-only); capabilities vision, tools, reasoning; input image, pdf, text.

| Field | Value |
| --- | --- |
| Vendor | anthropic |
| Kind | CHAT |
| Context window | 200,000 tokens |
| Max output tokens | 64,000 tokens |
| Indicative price (US list) | $3 in / $15 out per 1M tokens (indicative US list — verify with vendor) |
| Cited capability index | intelligence index 25.5 · math 38 (cited from Artificial Analysis — verify at the source) |
| Input modalities | image, pdf, text |
| Capabilities | vision, tools, reasoning |
| Weights | Proprietary (API-only) |
| Sources | artificial-analysis, committed, litellm, overrides |
| Last verified | 2026-07-24 |

*Part of the [Model Catalog](https://openviglet.github.io/model-catalog/) — [anthropic models](https://openviglet.github.io/model-catalog/models/anthropic/) · [Vendor JSON](https://openviglet.github.io/model-catalog/by-vendor/anthropic.json) · [HTML](https://openviglet.github.io/model-catalog/models/anthropic/claude-sonnet-4-20250514.html)*