GPT-5 Nano

Name: GPT-5 Nano
Author: OpenAI

OpenAI · 2025-08-07

GPT-5 Nano is the smallest and fastest tier of OpenAI's GPT-5 generation, optimized for speed, low cost, and high-volume use. It targets simple tasks such as classification, extraction, and lightweight agentic subtasks. Its only published snapshot, and the API alias's default, is gpt-5-nano-2025-08-07.

Benchmark scores

Benchmark	Score
AA-LCR	41.7
AA-LCR v1.1	45.0
AA-Omniscience Index	-25.8
Agent Red Teaming k=100 (CAIS)	88.5
AIME 2024 (avg@8)	81.1
AIME 2024-2025	81.2
AIME 2025 (Artificial Analysis avg@10)	83.7
AIME 2025 (avg@8)	81.3
AIME 2025 (MathArena repeated-run mean)	85.0
ALE-Bench	1016
ARC-AGI-1 Semi-Private	20.7
ARC-AGI-2	2.6
Arena Text — Business, Management & Financial Ops (No Style Control)	1311
Arena Text — Chinese (No Style Control)	1356
Arena Text — Creative Writing (No Style Control)	1250
Arena Text — English (No Style Control)	1322
Arena Text — Entertainment, Sports & Media (No Style Control)	1269
Arena Text — Exclude Ties (No Style Control)	1268
Arena Text — Exclude Ties (Style Controlled)	1293
Arena Text — Expert (No Style Control)	1321
Arena Text — German (No Style Control)	1327
Arena Text — Hard Prompts (No Style Control)	1328
Arena Text — Hard Prompts English (No Style Control)	1339
Arena Text — Instruction Following (No Style Control)	1306
Arena Text — Japanese (No Style Control)	1227
Arena Text — Korean (No Style Control)	1269
Arena Text — Legal & Government (No Style Control)	1299
Arena Text — Life, Physical & Social Science (No Style Control)	1319
Arena Text — Longer Query (No Style Control)	1312
Arena Text — Medicine & Healthcare (No Style Control)	1336