Claude Sonnet 4.5
Anthropic
Claude Sonnet 4.5 by Anthropic costs — per 1M input tokens and — per 1M output tokens, with a —-token context window.
Pricing
Input (per 1M tokens)
—
Output (per 1M tokens)
—
Cached input (per 1M)
—
Specifications
- Provider
- Anthropic
- Context window
- —
- Parameters
- —
- Released
- Sep 2025
- Open weights
- No
- Frontier model
- No
Benchmarks
- LiveBenchreasoning/coding
- 67.9
- LMArena (Chatbot Arena) Elohuman-preference
- 1437.8
Compare Claude Sonnet 4.5 with…
Claude Sonnet 4.5 vs Anthropic: Claude Opus Latest$25.00/1MClaude Sonnet 4.5 vs Anthropic: Claude Fable Latest$50.00/1MClaude Sonnet 4.5 vs Anthropic: Claude Opus 4.8 (Fast)$50.00/1MClaude Sonnet 4.5 vs Anthropic: Claude Opus 4.8$25.00/1MClaude Sonnet 4.5 vs Anthropic: Claude Opus 4.7 (Fast)$150.00/1MClaude Sonnet 4.5 vs Anthropic: Claude Opus 4.6 (Fast)$150.00/1M
FAQ
Pricing is per 1M tokens (USD); confirm with the provider before production use.