Anthropic: Claude Sonnet 4.5anthropic
Bottom Line
Anthropic: Claude Sonnet 4.5: $3.00/1M input, $15.00/1M output, 1.0M context. Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...
API Pricing (per 1M tokens)
| Input | $3.00 |
| Output | $15.00 |
| Cache Read | — |
| Cache Write | — |
| Blended (3:1) | $6.00 |
Specs & Performance
| Context Length | 1.0M |
| Max Output | 64K |
| Intelligence | — |
| Coding | — |
| Math | — |
| Speed | — |
| TTFT | — |
| CPS Grade | — |
| Input / Output Modalities | text, image, file → text |
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FAQ
How much does the Anthropic: Claude Sonnet 4.5 API cost?
Anthropic: Claude Sonnet 4.5 costs $3.00/1M input tokens and $15.00/1M output tokens. Blended cost at a 3:1 ratio is about $6.00/1M tokens.
What is the context window of Anthropic: Claude Sonnet 4.5?
Anthropic: Claude Sonnet 4.5 supports a 1.0M token context window with up to 64K output tokens.
Is Anthropic: Claude Sonnet 4.5 worth it?
Anthropic: Claude Sonnet 4.5 has a CPS grade of — (score —), intelligence index —, coding index —. Use the compare page to benchmark against rivals.