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GPT-5 mini
🇺🇸OpenAI11mo
Context:400K tokens
Input:$0.25/1M
Output:$2/1M
Neura Index
50.7
Rank #147—
mediumCategory Profile
Benchmark Scores (4)
reasoning
| Benchmark | Score | Source |
|---|---|---|
| GPQA Diamond | 82.3 | verified |
| Humanity's Last Exam | 16.7 | verified |
math
| Benchmark | Score | Source |
|---|---|---|
| AIME 2025 | 91.1 | verified |
| FrontierMath | 22.1 | verified |
Performance History
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Frequently Asked Questions about GPT-5 mini
What is GPT-5 mini's Neura Intelligence Index score?▾
GPT-5 mini by OpenAI scores 50.7 out of 100 on the Neura Intelligence Index, ranking #147 among tracked AI models. This composite score is computed from 4 individual benchmarks across coding, math, reasoning, and language categories.
How much does GPT-5 mini cost to use?▾
GPT-5 mini costs $0.25/1M input tokens and $2/1M output tokens via API. At a typical 3:1 input-to-output ratio with 1M tokens/day usage, the estimated monthly cost is approximately $21.
Is GPT-5 mini open source?▾
No, GPT-5 mini is a proprietary model by OpenAI. It is only accessible via their API.
What is GPT-5 mini's context window?▾
GPT-5 mini supports a context window of 400K tokens, allowing it to process very long documents, codebases, and conversations in a single request.
What benchmark does GPT-5 mini perform best on?▾
GPT-5 mini achieves its highest score on AIME 2025 with a score of 91.1%. This benchmark evaluates american invitational mathematics examination 2025 — competition-level math problems.