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Comparison

GPT 5 Chat vs Kimi K2.5

Side-by-side comparison of OpenAI GPT 5 Chat and Moonshot Kimi K2.5. Pricing, quality benchmarks, and context windows.

Quality Benchmarks

LiveBench / 0-100

Coding85 / 60Math85 / 85Reasoning85 / 74Language85 / 64

GPT 5 Chat

85.1Frontier

Kimi K2.5

70.8Frontier

GPT 5 Chat
Kimi K2.5

Input Price (per 1M)

$1.25
$0.4000
68% less

Output Price (per 1M)

$10.00
$1.90
81% less

Context Window

128K
262.1K
2.0x

Max Output

16.4K
262.1K
16.0x

OpenAI

GPT 5 Chat

vs

Moonshot

Kimi K2.5

Pricing per 1M Tokens

$1.25

Input

Input

$0.4000

68% cheaper

Input

$10.00

Output

Output

$1.90

81% cheaper

Output

Token Limits

Context

128K

Context

Context

262.1K

Max Output

16.4K

Max Output

Max Output

262.1K

Vision
VisionTools

GPT 5 Chat Details

$1.25 in / $10.00 out

Kimi K2.5 Details

$0.4000 in / $1.90 out

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