Usage › Claude Sonnet 4.5
Anthropic · LLM
An LLM from Anthropic, released Sep 29, 2025. It’s outside the top 30 in usage over the last 7 days and isn’t in the performance ranking (Arena top) yet.
| Performance rank | Not ranked |
| Usage rank | Outside top 30 |
| Output price | $15 per 1M tokens |
| Input price | $3 per 1M tokens |
| Context length | 1M tokens |
| Released | Sep 29, 2025 |
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Source: OpenRouter (usage Sep 27 – Oct 3 · prices), Arena (performance · quality) · CC BY 4.0. Prices are converted at fixed exchange rates.