GPT-5.4 nano
OpenAI · released 2026 · proprietary API
- 400K context
- Text + image in
OpenAI's small, latency-focused tier for simple, high-volume calls; GPT-5.6 Luna matches its input price and undercuts its output, so it is no longer the cheapest OpenAI row.
Context window
400K
400,000 tokens
Input price
$0.20
per 1M tokens
Output price
$1.25
per 1M tokens
Blended
$0.46
3:1 in:out mix
Weights
Proprietary
API only
Released
2026
OpenAI
Where it ranks
Of 40 models tracked.
Cost to run
#9
of 40
Input price
#7(tied)
of 40
Context window
#33(tied)
of 40
Compare with
The nearest models by blended cost to run.
Put it to work
Specs from BitByteCore's hand-verified Frontier Ledger (v2026-09-26), this row verified 3 Sep 2026 against OpenAI's official pricing ↗. Model pricing moves fast, so confirm with OpenAI before you rely on a figure.