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GPT-5 Nano

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.

Benchmark scores

BenchmarkScore
AA-LCR41.7
AA-Omniscience Index-24.9
Agent Red Teaming k=100 (CAIS)88.5
AIME 2024 (avg@8)81.1
AIME 2024-202581.2
AIME 202578.3
AIME 2025 (avg@8)81.3
ALE-Bench1016
ARC-AGI-120.7
ARC-AGI-20.9
Arena Text — Business, Management & Financial Ops (No Style Control)1309
Arena Text — Chinese (No Style Control)1352
Arena Text — Creative Writing (No Style Control)1251
Arena Text — English (No Style Control)1323
Arena Text — Entertainment, Sports & Media (No Style Control)1269
Arena Text — Exclude Ties (No Style Control)1269
Arena Text — Exclude Ties (Style Controlled)1293
Arena Text — Expert (No Style Control)1321
Arena Text — German (No Style Control)1330
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 — Korean (No Style Control)1264
Arena Text — Legal & Government (No Style Control)1303
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)1333
Arena Text — Multi-turn (No Style Control)1312
Arena Text — Non-English (No Style Control)1313
Arena Text — Non-English (Style Controlled)1328
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