Claude Sonnet 4.5 vs GPT-5.2 Pro: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
Anthropic
Claude Sonnet 4.5
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
OpenAI
GPT-5.2 Pro
Pricing (per 1M tokens)
Input$10.50
Output$84.00
Context & Output
Context Window400K tokens
Max Output128K tokens
Capabilities
Categoryflagship
Multimodaltext + image + audio
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
Claude Sonnet 4.5
71.4% cheaper
Cheaper Output Price
Claude Sonnet 4.5
82.1% cheaper
Larger Context Window
GPT-5.2 Pro
+200K tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
Claude Sonnet 4.5
$18.00
$3.00/1M input + $15.00/1M output
GPT-5.2 Pro
$94.50
$10.50/1M input + $84.00/1M output
Claude Sonnet 4.5 is 81.0% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, Claude Sonnet 4.5 or GPT-5.2 Pro?
For input tokens, Claude Sonnet 4.5 is cheaper at $3.00 per 1M tokens. For output tokens, Claude Sonnet 4.5 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 4.5 vs GPT-5.2 Pro?
Claude Sonnet 4.5 has a context window of 200K tokens, while GPT-5.2 Pro has 400K tokens. GPT-5.2 Pro supports a larger context window of 400K tokens, which is beneficial for processing longer documents.
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