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GPT-5.4 Mini Pricing
OpenAI · gpt-5-4-mini
Input / 1M tokens
$0.750
Output / 1M tokens
$4.50
Context window
400k tokens
≈ 533 pages of text
Max output
128k tokens
What it costs in practice
Typical request (1,200 in + 400 out tokens)$0.0027
1,000 requests / month$2.70/mo10,000 requests / month$27.00/mo100,000 requests / month$270.00/moEstimate your own workloadOpens the calculator with GPT-5.4 Mini preloaded — adjust volume and token counts there.
Price history
Only one price point recorded so far.
The staircase chart appears once a price change is detected.
What it excels at
Good default for everyday chat, summarization, and lightweight agent steps where GPT-5.4-level reasoning isn't required.
The business tradeoff
Quality gap widens on long, multi-hop reasoning tasks — needs careful prompt design to avoid silent failures on edge cases.
Cheaper from OpenAI
Head-to-head
Vendor list rates, as of Jun 15, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.