GPT-5.4 Mini
OpenAI's strongest mini model for coding, computer use, and subagents. Optimized for high-volume workloads.
ReasoningVisionToolsStructured output
Context window
400K
Max output
128K
Input price
$0.75 /1M
Output price
$4.50 /1M
Benchmarks
Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.
Intelligence Index48.9
Coding Index51.5
GPQA Diamond
88%
Humanity's Last Exam
27%
SciCode
50%
IFBench
73%
Long-context reasoning
69%
Terminal-Bench Hard
52%
τ²-Bench Telecom
83%
See full leaderboard →Benchmarks via Artificial Analysis · View on AA
Available routes
The same GPT-5.4 Mini 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 | $0.75 | $4.50 |
| 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 | $0.75 | $4.50 |
Human review: Abuse-flagged only