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Comparison

GPT 5 Chat vs Kimi K2 0905

Side-by-side comparison of OpenAI GPT 5 Chat and Moonshot Kimi K2 0905. Pricing, quality benchmarks, and context windows.

Quality Benchmarks

LiveBench / 0-100

Coding85 / 50Math85 / 81Reasoning85 / 60Language85 / 62

GPT 5 Chat

85.1Frontier

Kimi K2 0905

63.4Strong

GPT 5 Chat
Kimi K2 0905

Input Price (per 1M)

$1.25
$0.6000
52% less

Output Price (per 1M)

$10.00
$2.50
75% less

Context Window

128K
262.1K
2.0x

Max Output

16.4K
262.1K
16.0x

OpenAI

GPT 5 Chat

vs

Moonshot

Kimi K2 0905

Pricing per 1M Tokens

$1.25

Input

Input

$0.6000

52% cheaper

Input

$10.00

Output

Output

$2.50

75% cheaper

Output

Token Limits

Context

128K

Context

Context

262.1K

Max Output

16.4K

Max Output

Max Output

262.1K

Vision
Tools

GPT 5 Chat Details

$1.25 in / $10.00 out

Kimi K2 0905 Details

$0.6000 in / $2.50 out

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More Comparisons

Top OpenAI pick

GPT 5 Codex vs Kimi K2 0905

$1.25/M in · Score 94

Top Moonshot pick

GPT 5 Chat vs Kimi K2.6

$0.6840/M in · Score 73.9

OpenAI

GPT 5 vs Kimi K2 0905$1.25/MGPT 5 Image vs Kimi K2 0905$10.00/MGPT 5.4 vs Kimi K2 0905$2.50/MGPT 5.5 vs Kimi K2 0905$5.00/M

Moonshot

GPT 5 Chat vs Kimi K2.5$0.4000/MGPT 5 Chat vs Kimi K2$0.5700/MGPT 5 Chat vs Kimi K2 Thinking$0.6000/M

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