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OpenAIProprietary
GPT-5-mini
GPT-5-mini is a foundational model developed by OpenAI. It is equipped with a 400K vast context window and allows for efficient processing.
Parameters
Undisclosed
Context Window
400K
License
Proprietary
Release Date
2025-08-07
API Pricing
API pricing for this model is not yet available
Strengths
- ・400K long context understanding
- ・Advanced design by OpenAI
- ・Versatile as a foundational model
Weaknesses
- ・Is closed-source
- ・License has restrictions
- ・Internal structure is non-public
Use Cases
- ・Analyzing large volumes of text
- ・Processing long-context inputs
- ・Executing general AI tasks
Deep Analysis
Release Date
August 2025
SWE-bench Verified
64.7%
Context Window
400K tokens
Pricing
$0.25 / $2.00 per 1M tokens
Strengths
- ・Excellent price-to-performance at $0.25/$2.00
- ・400K context window
- ・Strong math (MATH Level 5: 97.8%)
- ・Good coding (SWE-bench 64.7%)
Weaknesses
- ・Superseded by GPT-5.4 mini
- ・No Arena Elo reported
- ・Lower reasoning than flagship GPT-5
Competitor Comparison
| Model | SWE | Price |
|---|---|---|
| GPT-5 Nano | 34.8% | $0.05/$0.40 |
| Claude 3.5 Sonnet | ~49% | $3/$15 |
| Gemini 2.0 Flash | $0.10/$0.40 |
GPT-5 Mini is a compact, cost-effective variant offering near-flagship context (400K) at 5x lower cost.
Sources
Analysis generated: 2026-05-24