Anthropic🚀 Flagship
Claude Sonnet 4.5
Optimal balance of intelligence, cost, and speed
💰 Pricing
Per million tokens (USD)
Input$3.00
Output$15.00
Cached Input
$0.30090% savings
Last updated: 2026-02-06
📊 Specifications
Context Window1.0M
Max Output64.0K
Features
VisionFunction CallingStreamingJSON Mode
🔗 Official Resources
📈 Price Comparison
Compare with similar models
| Model | Input | Output | vs Claude Sonnet 4.5 |
|---|---|---|---|
Claude Sonnet 4.5Current | $3.00 | $15.00 | — |
| GPT-5.2 | $1.75 | $14.00 | -7% |
| Gemini 3 Pro Preview | $2.00 | $12.00 | -20% |
| GPT-5.1 | $1.25 | $10.00 | -33% |
| GPT-4o | $2.50 | $10.00 | -33% |
| Gemini 2.5 Pro | $1.25 | $10.00 | -33% |
🧮 Example Costs
Typical use case estimates
Single Request
$0.0105
1.0K in / 500 out
1K Requests/day
$10.50
1.0M in / 500.0K out
10K Requests/day
$105.00
10.0M in / 5.0M out