Comparison
GPT 5 Chat vs Claude Opus 4.5
Side-by-side comparison of OpenAI GPT 5 Chat and Anthropic Claude Opus 4.5. Pricing, quality benchmarks, and context windows.
Quality Benchmarks
LiveBench / 0-100
GPT 5 Chat
85.0Frontier
Claude Opus 4.5
78.0Frontier
GPT 5 Chat
Claude Opus 4.5
Input Price (per 1M)
$1.25
$5.00
Output Price (per 1M)
$10.00
$25.00
Context Window
128K
200K
Max Output
16.4K
64K
Pricing per 1M Tokens
$1.25
75% cheaper
Input
Input
$5.00
Input
$10.00
60% cheaper
Output
Output
$25.00
Output
Token Limits
Context
128K
Context
Context
200K
Max Output
16.4K
Max Output
Max Output
64K
Vision
VisionTools
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