Comparison

GPT 5.2 Codex vs GPT 5.3 Chat

Side-by-side comparison of OpenAI GPT 5.2 Codex and OpenAI GPT 5.3 Chat. Pricing, quality benchmarks, and context windows.

Quality Benchmarks

LiveBench / 0-100

GPT 5.2 Codex

77.8Frontier

GPT 5.3 Chat

74.4Frontier

GPT 5.2 Codex

GPT 5.3 Chat

Input Price (per 1M)

$1.75

Output Price (per 1M)

$14.00

Context Window

400K

3.1x

128K

Max Output

128K

7.8x

16.4K

OpenAI

GPT 5.2 Codex

OpenAI

GPT 5.3 Chat

Pricing per 1M Tokens

$1.75

Input

$1.75

Input

$14.00

Output

$14.00

Output

Token Limits

Context

400K

Context

128K

Max Output

128K

Max Output

16.4K

VisionTools

GPT 5.2 Codex Details

$1.75 in / $14.00 out

GPT 5.3 Chat Details

$1.75 in / $14.00 out

More Comparisons

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GPT 5.4 vs GPT 5.3 Chat

$2.50/M in · Score 83.1

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GPT 5.2 Codex vs GPT 5.4

$2.50/M in · Score 83.1

OpenAI

GPT 5.5 vs GPT 5.3 Chat$5.00/M GPT 5.2 Chat vs GPT 5.3 Chat$1.75/M GPT 5.2 vs GPT 5.3 Chat$1.75/M GPT 5.3 Chat vs GPT 5.3 Chat$1.75/M

OpenAI

GPT 5.2 Codex vs GPT 5.5$5.00/M GPT 5.2 Codex vs GPT 5.2 Codex$1.75/M GPT 5.2 Codex vs GPT 5.2 Chat$1.75/M GPT 5.2 Codex vs GPT 5.2$1.75/M

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