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Flagship — best answers, highest costCommercial API
GPT-5 Pro Pricing
OpenAI · openai-gpt-5-pro
Input / 1M tokens
$15.00
Output / 1M tokens
$120.00
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)$0.066
1,000 requests / month$66.00/mo10,000 requests / month$660.00/mo100,000 requests / month$6,600.00/moEstimate your own workloadOpens the calculator with GPT-5 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
Excels at multi-step reasoning and synthesis over very large contexts with support for extended coherent outputs.
The business tradeoff
Output token pricing is substantially higher than prior GPT releases, constraining cost-effective use at scale.
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.