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GPT 5.4 Mini (Fast)

openai·openai/gpt-5.4-mini-fast·GA·Closed·gpt-mini series
Strong small GPT for coding subagents, quick tool use, and high-volume work

Specs & pricing

Input / output per 1M tokens
Reference price·Vercel AI Gateway
$1.50 / $9.00
Blended $3.38 · Cache read $0.15
Lowest paid·Vercel AI GatewayCloud
$1.50 / $9.00
Blended $3.38
Context
400,000
Output limit
128,000
Knowledge cutoff
2025-08-31
Released / updated
2026-03-17 / 2026-03-17
Capabilities
✓ Reasoning✓ Tool use✓ Structured output✓ Temperature✓ Attachments
Modalities
TextImagePDF

Available at 1 providers1 with public prices

ProviderTierInputOutputCache readCache writeContextOutput limitStatus
Vercel AI GatewayCloud$1.50$9.00$0.15—400,000128,000

Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.

Reasoning control

effort = noneeffort = minimaleffort = loweffort = mediumeffort = higheffort = xhigh

Your usage cost

1Vercel AI Gateway$588.00
The cheapest paid channel is the only channel.

Price historyone sample accumulated per data sync

Input list $1.50Output list $9.00Min blended $3.38

Price history accumulates from each data sync; currently only 1 sample(s) (2026-08-19). Each future sync adds a point, and once accumulated a line is drawn here.

Related models

GPT Mini Latestsame series$0.75 / $4.50GPT-5.4 minisame series$0.75 / $4.50Agentic Chat (GPT-5.4 Mini)same series$0 / $0GLM-5.3-Flashcheaper alternative$0.15 / $0.50DeepSeek V4.1 Flashcheaper alternative$0.15 / $0.60DeepSeek V4 Flash 0731cheaper alternative$0.45 / $1.34GPT-5.6 Lunacheaper alternative$0.20 / $1.20
Data partly from models.dev (MIT) · Vercel AI Gateway official docs ↗