GPT-5.4
OpenAI's frontier model for complex professional work. 1M context window with reasoning.
ReasoningVisionToolsStructured output
Context window
1.1M
Max output
128K
Input price
$2.50 /1M
Output price
$15.00 /1M
Benchmarks
Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.
Intelligence Index56.8
Coding Index57.3
GPQA Diamond
92%
Humanity's Last Exam
42%
SciCode
57%
IFBench
74%
Long-context reasoning
74%
Terminal-Bench Hard
58%
τ²-Bench Telecom
87%
See full leaderboard →Benchmarks via Artificial Analysis · View on AA
Available routes
The same GPT-5.4 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 | $2.50 | $15.00 |
| 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 | $2.50 | $15.00 |
Human review: Abuse-flagged only