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GPT-5.4

ZenMux

GPT-5.4 by ZenMux costs $3.75 per 1M input tokens and $18.75 per 1M output tokens, with a 1.1M-token context window.

Pricing

Input (per 1M tokens)
$3.75
Output (per 1M tokens)
$18.75
Cached input (per 1M)

Specifications

Provider
ZenMux
Context window
1.1M tokens
Parameters
Released
Mar 2026
Open weights
No
Frontier model
No

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FAQ

Pricing is per 1M tokens (USD); confirm with the provider before production use.