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GPT 5 Pro (latest) API price
openai/gpt-5-pro
The cheapest GPT 5 Pro (latest) API is $15.00/M input at Official - OpenAI - all 3 providers compared below, per 1M tokens.
Rolling name - always points to the newest snapshot of this model. The pinned snapshots are priced separately: GPT 5 Pro (10-06 snapshot).
FlagshipOpenAI400K context3 sellers
Input
$15.00
per 1M tokens · Official - OpenAI
Output
$120.00
per 1M tokens · Official - OpenAI
Where to buy it
Cheapest GPT 5 Pro (latest) API providers compared - 3 sellers, from $15.00/M.
| Provider | Input $/M | Output $/M |
|---|---|---|
| Official - OpenAI | 15.00cheapest | 120.00 |
| Batch | 7.50 | 60.00 |
| OpenRouter (aggregator) | 15.00 | 120.00 |
| OrcaRouter (aggregator) | 15.00 | 120.00 |
Against its tier
- This model$135.00
- Cheapest · GLM 5.3 Flash$0.29
- Tier median · Kimi K3$9.00
- Dearest · GPT 5.5 Pro (04-23 snapshot)$330.00
#27 of 32 flagship · cheaper than 16%
Details
- Context window
- 400K400,000 tokens
- Developer
- OpenAI
- Sellers
- 3
- Cheapest at
- Official - OpenAI
- Combined
- $135.00in + out per 1M
- Last checked
- 2026-08-28