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OpenAIProprietary
GPT-5.4 mini
GPT-5.4 mini is a reasoning model developed by OpenAI. It is offered as a foundation model that supports an extensive context window of 400K.
Parameters
Undisclosed
Context Window
400K
License
Proprietary
Release Date
2026-03-17
API Pricing
Input Price (per 1M tokens)
$0.75
Output Price (per 1M tokens)
$4.5
Billing Mode: standard
Strengths
- ・Maintains advanced reasoning ability
- ・400K long context
- ・Latest design from OpenAI
Weaknesses
- ・Non-public license
- ・Opaque source code
- ・Difficult for external verification
Use Cases
- ・Complex logical thinking tasks
- ・Analysis of lengthy documents
- ・Tasks requiring advanced reasoning
Deep Analysis
Release Date
March 17, 2026
GPQA Diamond
87.5%
SWE-bench Pro
54.4%
Context Window
400K tokens
Pricing
$0.75 / $4.50 per 1M tokens
Strengths
- ・Near-flagship intelligence (GPQA 87.5%) at fraction of cost
- ・400K context
- ・Optimized for coding and sub-agents
Weaknesses
- ・No Arena Elo published
- ・Lower SWE-bench than flagship
Competitor Comparison
| Model | GPQA | Price |
|---|---|---|
| GPT-5.4 | 92.8% | $2.50/$15 |
| Claude 3.5 Sonnet | $3/$15 |
GPT-5.4 Mini delivers near-flagship intelligence at excellent value.
Sources
Analysis generated: 2026-05-24