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Flagship — best answers, highest costCommercial API
GPT-5.4 Pro Pricing
OpenAI · openai-gpt-5-4-pro
Input / 1M tokens
$30.00
Output / 1M tokens
$180.00
Context window
1050k tokens
≈ 1,400 pages of text
Max output
128k tokens
What it costs in practice
Typical request (1,200 in + 400 out tokens)$0.108
1,000 requests / month$108.00/mo10,000 requests / month$1,080.00/mo100,000 requests / month$10,800.00/moEstimate your own workloadOpens the calculator with GPT-5.4 Pro 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
Strong performance on long-context reasoning and large-scale structured output tasks enabled by 1M+ token context and 128k output capacity.
The business tradeoff
Output pricing at $180 per million tokens creates high per-request costs that restrict use in volume or latency-sensitive production workloads.
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.