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Comparison

GPT 5.5 vs Claude Sonnet 4.6

Side-by-side comparison of OpenAI GPT 5.5 and Anthropic Claude Sonnet 4.6. Pricing, quality benchmarks, and context windows.

Quality Benchmarks

LiveBench / 0-100

Coding67 / 68Math96 / 87Reasoning92 / 92Language77 / 66

GPT 5.5

83.0Frontier

Claude Sonnet 4.6

78.1Frontier

GPT 5.5
Claude Sonnet 4.6

Input Price (per 1M)

$5.00
$3.00
40% less

Output Price (per 1M)

$30.00
$15.00
50% less

Context Window

1.1M
1.1x
1M

Max Output

128K
128K

OpenAI

GPT 5.5

vs

Anthropic

Claude Sonnet 4.6

Pricing per 1M Tokens

$5.00

Input

Input

$3.00

40% cheaper

Input

$30.00

Output

Output

$15.00

50% cheaper

Output

Token Limits

Context

1.1M

Context

Context

1M

Max Output

128K

Max Output

Max Output

128K

VisionTools
VisionTools

GPT 5.5 Details

$5.00 in / $30.00 out

Claude Sonnet 4.6 Details

$3.00 in / $15.00 out

Compare Models

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Anthropic

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