GPT-5 Nano
GPT-5 Nano via Azure OpenAI (EU region)
VisionToolsStructured output
Context window
272K
Max output
128K
Input price
$0.05 /1M
Output price
$0.40 /1M
Benchmarks
Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.
Intelligence Index26.8
Coding Index20.3
Math Index83.7
MMLU-Pro
78%
GPQA Diamond
68%
Humanity's Last Exam
8%
LiveCodeBench
79%
SciCode
37%
AIME 2025
84%
IFBench
68%
Long-context reasoning
42%
Terminal-Bench Hard
12%
τ²-Bench Telecom
37%
See full leaderboard →Benchmarks via Artificial Analysis · View on AA
Available routes
The same GPT-5 Nano runs on 2 different routes through the Opper gateway. Each route has its own data-handling posture.
| Provider | Region | Zero data retention | Training | Logging | Contract | Input | Output |
|---|---|---|---|---|---|---|---|
| Azure OpenAI | EU | Opt-in | No | Up to 30 days for abuse monitoring | EA/MCA-E | $0.05 | $0.40 |
| OpenAI | US | Opt-in | No (opt-in) | Up to 30 days for abuse monitoring on stateless endpoints. Stateful endpoints (Conversations, ChatKit, Vector Stores) retain until deleted. | Enterprise | $0.05 | $0.40 |
Human review: Abuse-flagged only