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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