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Comparison

Claude Opus 4.6 vs GPT 5.2 Codex

Side-by-side comparison of Anthropic Claude Opus 4.6 and OpenAI GPT 5.2 Codex. Pricing, quality benchmarks, and context windows.

Quality Benchmarks

LiveBench / 0-100

Coding68 / 61Math89 / 93Reasoning87 / 88Language70 / 68

Claude Opus 4.6

78.7Frontier

GPT 5.2 Codex

77.8Frontier

Claude Opus 4.6
GPT 5.2 Codex

Input Price (per 1M)

$5.00
$1.75
65% less

Output Price (per 1M)

$25.00
$14.00
44% less

Context Window

1M
2.5x
400K

Max Output

128K
128K

Anthropic

Claude Opus 4.6

vs

OpenAI

GPT 5.2 Codex

Pricing per 1M Tokens

$5.00

Input

Input

$1.75

65% cheaper

Input

$25.00

Output

Output

$14.00

44% cheaper

Output

Token Limits

Context

1M

Context

Context

400K

Max Output

128K

Max Output

Max Output

128K

VisionTools
VisionTools

Claude Opus 4.6 Details

$5.00 in / $25.00 out

GPT 5.2 Codex Details

$1.75 in / $14.00 out

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More Comparisons

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Claude Opus 4 vs GPT 5.2 Codex

$15.00/M in · Score 98

Top OpenAI pick

Claude Opus 4.6 vs GPT 5 Codex

$1.25/M in · Score 91.8

Anthropic

Claude Sonnet 4.6 vs GPT 5.2 Codex$3.00/MClaude Opus 4.5 vs GPT 5.2 Codex$5.00/MClaude 3.7 Sonnet vs GPT 5.2 Codex$3.00/MClaude 3.7 Sonnet:Thinking vs GPT 5.2 Codex$3.00/M

OpenAI

Claude Opus 4.6 vs GPT 5$1.25/MClaude Opus 4.6 vs GPT 5 Image$10.00/MClaude Opus 4.6 vs GPT 5 Chat$1.25/MClaude Opus 4.6 vs GPT 5.4$2.50/M

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