GPT-5 Codex vs Kimi K2 0905
GPT-5 Codex offers 400K tokens context vs 262K tokens, Kimi K2 0905 is more cost-effective, GPT-5 Codex includes advanced reasoning. Compare full specs, pricing, and choose the best model for your use case.
Quick Overview
Detailed Comparison
Specification
GPT-5 Codex
Kimi K2 0905
Provider
ZenMux
ZenMux
Context Window
400K tokens
262K tokens
Max Output Tokens
128K tokens
16K tokens
Input Pricing (per 1M tokens)
$1.25
$0.60
Output Pricing (per 1M tokens)
$10.00
$2.50
Release Date
Sep 2025
Sep 2025
Capabilities
Capability
GPT-5 Codex
Kimi K2 0905
Text Generation
Vision
Function Calling
Advanced Reasoning
File Attachments
Which Model Should You Choose?
Choose GPT-5 Codex if:
- • You need a larger context window
- • You need advanced reasoning
Choose Kimi K2 0905 if:
- • Cost efficiency is a priority