Claude Opus 4.5 vs GPT-5 Pro: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
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
OpenAI
GPT-5 Pro
Pricing (per 1M tokens)
Input$15.00
Output$120.00
Context & Output
Context Window400K tokens
Max Output128K tokens
Capabilities
Categoryflagship
Multimodaltext + image + audio
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
Claude Opus 4.5
66.7% cheaper
Cheaper Output Price
Claude Opus 4.5
79.2% cheaper
Larger Context Window
GPT-5 Pro
+200K tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
Claude Opus 4.5
$30.00
$5.00/1M input + $25.00/1M output
GPT-5 Pro
$135.00
$15.00/1M input + $120.00/1M output
Claude Opus 4.5 is 77.8% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, Claude Opus 4.5 or GPT-5 Pro?
For input tokens, Claude Opus 4.5 is cheaper at $5.00 per 1M tokens. For output tokens, Claude Opus 4.5 is cheaper at $25.00 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of Claude Opus 4.5 vs GPT-5 Pro?
Claude Opus 4.5 has a context window of 200K tokens, while GPT-5 Pro has 400K tokens. GPT-5 Pro supports a larger context window of 400K tokens, which is beneficial for processing longer documents.
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