GPT-5.2 vs Claude Sonnet 4.5
Side-by-side comparison of pricing, features, and capabilities
Pricing
Input / 1M tokens
$1.75
$3.00
Output / 1M tokens
$14.00
$15.00
Avg. Cost / 1M
$7.88
$9.00
Specifications
Context Window
128K
200K
Tier
frontier
high
Provider
OpenAI
Anthropic
Capabilities
Feature
gpt-5.2
claude-sonnet-4.5
text
code
vision
reasoning
long context
Verdict
Best for Cost
gpt-5.2 is 14% cheaper on average
Best for Quality
gpt-5.2 (frontier tier) is positioned as higher quality
Best for Long Documents
claude-sonnet-4.5 has a larger context window (200K)
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