ChatGPT
ChatGPT

GPT-5 Nano

Model ID:gpt-5-nano-2025-08-07
2025-08-07Proprietary Model
API
OverallNo.27
PopularityNo.161

GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger counterparts, it retains key instruction-following and safety features. It is the successor to GPT-4.1-nano and offers a lightweight option for cost-sensitive or real-time applications.

Knowledge Cutoff
2024-05-31

The date this AI finished learning. It may not know about things that happened after this date.

Input → Output Format

The types of content this AI can receive, and what it can produce in return.

Context Memory
400KIN128KOUT

The maximum amount of text the AI can read and process in a single request. A larger number means it can handle longer documents or conversations.

Cost/1M Words
$0.05IN$0.4OUT

The cost of using this AI directly in your own application. Shown in USD per 1 million units of text (tokens).

AI Performance Evaluation

Arena Overall Score
1337
±7
As of 2026-04-02
Overall Rank
No.161
8,319 Votes
Arena by Ability
Hard Prompts
1353±10No.156
Expert Knowledge
1353±34No.141
Instruction Following
1325±13No.154
Conversation Memory
1323±16No.171
Creative
1250±20No.220
Coding
1382±15No.159
Math
1343±27No.148
Arena by Occupation
Creative Writing
1290±14No.198
Social Sciences
1345±17No.170
Media
1278±16No.190
Business
1336±16No.158
Healthcare
1358±28No.149
Legal
1326±27No.195
Software
1371±11No.160
Mathematics
1351±28No.144
Reasoning Ability
AA Intelligence Index
26%↓13%
MMLU-Pro
77%↓5%
GPQA Diamond
67%↓15%
HLE
7.6%↓9%
Math
AA Math Index
78%↑4%
AIME 2025
78%↑4%
Coding Ability
AA Coding Index
23%↓14%
LiveCodeBench
76%↑11%
SciCode
34%↓8%
TerminalBench
17%↓17%
Instruction Following
IFBench
66%↑9%
환각률 (HHEM)
11%↑0%
사실 일관성 (HHEM)
90%↑0%
Long Context
AA-LCR
40%↓24%
Agentic AI Ability
TAU2
30%↓41%
Speed
Standard Mode
135tok/sec↑58
First Output 0.73s
Artificial Analysis
Reasoning Mode
144tok/sec↑71
First Output 57.13s
Artificial Analysis