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Comparison

GPT 5.5 vs GPT 5 Chat

Side-by-side comparison of OpenAI GPT 5.5 and OpenAI GPT 5 Chat. Pricing, quality benchmarks, and context windows.

Quality Benchmarks

LiveBench / 0-100

Coding67 / 85Math96 / 85Reasoning92 / 85Language77 / 85

GPT 5.5

83.0Frontier

GPT 5 Chat

85.1Frontier

GPT 5.5
GPT 5 Chat

Input Price (per 1M)

$5.00
$1.25
75% less

Output Price (per 1M)

$30.00
$10.00
67% less

Context Window

1.1M
8.2x
128K

Max Output

128K
7.8x
16.4K

OpenAI

GPT 5.5

vs

OpenAI

GPT 5 Chat

Pricing per 1M Tokens

$5.00

Input

Input

$1.25

75% cheaper

Input

$30.00

Output

Output

$10.00

67% cheaper

Output

Token Limits

Context

1.1M

Context

Context

128K

Max Output

128K

Max Output

Max Output

16.4K

VisionTools
Vision

GPT 5.5 Details

$5.00 in / $30.00 out

GPT 5 Chat Details

$1.25 in / $10.00 out

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$1.25/M in · Score 92.4

OpenAI

GPT 5 vs GPT 5 Chat$1.25/MGPT 5 Image vs GPT 5 Chat$10.00/MGPT 5 Chat vs GPT 5 Chat$1.25/MGPT 5.4 vs GPT 5 Chat$2.50/M

OpenAI

GPT 5.5 vs GPT 5$1.25/MGPT 5.5 vs GPT 5 Image$10.00/MGPT 5.5 vs GPT 5.4$2.50/MGPT 5.5 vs GPT 5.5$5.00/M

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