Claude Sonnet 4 vs Claude Opus 4.5: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
Anthropic
Claude Sonnet 4
Pricing (per 1M tokens)
Input$3.00
Output$15.00
Cached Input$0.3000
Batch Input$1.50
Batch Output$7.50
Context & Output
Context Window200K tokens
Max Output64K tokens
Capabilities
Categorymid
Multimodaltext + image
Fine-tuningNo
StreamingYes
Anthropic
Claude Opus 4.5
Pricing (per 1M tokens)
Input$5.00
Output$25.00
Cached Input$0.5000
Batch Input$2.50
Batch Output$12.50
Context & Output
Context Window200K tokens
Max Output64K tokens
Capabilities
Categoryflagship
Multimodaltext + image
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
Claude Sonnet 4
40.0% cheaper
Cheaper Output Price
Claude Sonnet 4
40.0% cheaper
Larger Context Window
Claude Opus 4.5
+0 tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
Claude Sonnet 4
$18.00
$3.00/1M input + $15.00/1M output
Claude Opus 4.5
$30.00
$5.00/1M input + $25.00/1M output
Claude Sonnet 4 is 40.0% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, Claude Sonnet 4 or Claude Opus 4.5?
For input tokens, Claude Sonnet 4 is cheaper at $3.00 per 1M tokens. For output tokens, Claude Sonnet 4 is cheaper at $15.00 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of Claude Sonnet 4 vs Claude Opus 4.5?
Claude Sonnet 4 has a context window of 200K tokens, while Claude Opus 4.5 has 200K tokens. Claude Sonnet 4 supports a larger context window of 200K tokens, which is beneficial for processing longer documents.
How do Claude Sonnet 4 and Claude Opus 4.5 compare for batch processing?
Both models support batch processing with discounted rates. Claude Sonnet 4 offers a better batch rate at $1.50 per 1M input tokens. Batch processing is ideal for non-time-sensitive workloads where you can wait for processing.
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