OpenAI

GPT-5 Nano

CTX400K

55Quality

Reasoning · Vision · Tools

Input$0.05/M

Output$0.40/M

Tiny GPT-5 lane for routing, extraction, classification, and bulk jobs

PaidProprietary635/1044

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OpenAITextCommon

GPT-5 Nano

Tiny GPT-5 lane for routing, extraction, classification, and bulk jobs

gpt-5-nano

Type: Text
Quality: 55 · Top 45% on the Epoch Capabilities Index
Context window: 400,000 tokens
Max output: 128,000 tokens
Input price: $0.05 / 1M tokens
Output price: $0.40 / 1M tokens
Cache read: $0.005 / 1M tokens
Cache write: —
Released: Aug 7, 2025
Knowledge cutoff: May 2024
Takes in: Text, Image
Puts out: Text
Reasoning: Yes
Tool calling: Yes
Structured output: Yes
File attachments: Yes
Access: Paid
License: Proprietary
Rarity: Common
Set number: 635/1044

Open OpenAI docs Quality 55 Where to run it 32 Evolution 2/3 Meet its creature Battle Solar Mini 4

Weights aren’t public. Use is governed by OpenAI’s terms. Specs from models.dev, last changed Oct 19, 2026. Official source: platform.openai.com.

How good is it?

Public leaderboard scores for GPT-5 Nano, refreshed daily from Epoch AI and LMArena.

Top 45% of the 277 models on the Epoch Capabilities Index: #126.

Quality is the share of a leaderboard’s models this one beats, from 0 to 100. Chat models are rated on Epoch AI’s Capabilities Index when it lists them, otherwise on LMArena; image and video models on LMArena’s image and video arenas.

Leaderboards

Epoch Capabilities Index#126 of 277
One number fitted from dozens of hard benchmarks, from science questions to agentic coding.139.3 index
LMArena Text#232 of 416
People compare two anonymous answers and vote for the better one.1,320 rating
Listed as gpt-5-nano-high
LMArena Text · Coding#225 of 411
The text arena’s coding prompts only.1,351 rating
Listed as gpt-5-nano-high
LMArena Text · Math#223 of 400
The text arena’s math prompts only.1,317 rating
Listed as gpt-5-nano-high
LMArena Text · Creative writing#267 of 414
The text arena’s creative writing prompts only.1,249 rating
Listed as gpt-5-nano-high
LMArena Vision#113 of 165
Questions about images, voted by people.1,159 rating
Listed as gpt-5-nano-high

Benchmarks Epoch AI runs

Scores from Epoch AI and LMArena, licensed CC BY 4.0. Boards list models under their own names, so a close match is shown with the name it was scored under. Credits

Where to run it

32 providers sell GPT-5 Nano through an API. Prices are per million tokens, cheapest first.

CheapestJiekou.AI$0.045 in · $0.36 out
From the labOpenAI$0.05 in · $0.40 out

API providers

Provider	Input	Output	Context
Jiekou.AICheapest paid`gpt-5-nano`	$0.045	$0.36	400K
Poe`openai/gpt-5-nano`	$0.045	$0.36	400K
Abacus`gpt-5-nano`	$0.05	$0.40	400K
Azure`gpt-5-nano`	$0.05	$0.40	400K
Azure Cognitive Services`gpt-5-nano`	$0.05	$0.40	400K
Cloudflare AI Gateway`openai/gpt-5-nano`	$0.05	$0.40	128K
Databricks`databricks-gpt-5-nano`	$0.05	$0.40	400K
DevPass (LLM Gateway)`gpt-5-nano`	$0.05	$0.40	400K
Eden AI`openai/gpt-5-nano`	$0.05	$0.40	400K
FastRouter`openai/gpt-5-nano`	$0.05	$0.40	400K

Show 22 more providers

Provider	Input	Output	Context
Helicone`gpt-5-nano`	$0.05	$0.40	400K
Impossibl`openai/gpt-5-nano`	$0.05	$0.40	400K
Kilo Gateway`openai/gpt-5-nano`	$0.05	$0.40	400K
LLM Gateway`azure/gpt-5-nano`	$0.05	$0.40	400K
LowRouter`auto/openai/gpt-5-nano`	$0.05	$0.40	400K
Merge Gateway`openai/gpt-5-nano`	$0.05	$0.40	400K
NanoGPT`openai/gpt-5-nano`	$0.05	$0.40	400K
NEAR AI Cloud`openai/gpt-5-nano`	$0.05	$0.40	400K
Neon`gpt-5-nano`	$0.05	$0.40	400K
Ofox`openai/gpt-5-nano`	$0.05	$0.40	400K
OpenAIOfficial`gpt-5-nano`	$0.05	$0.40	400K
OpenCode`gpt-5-nano`	$0.05	$0.40	400K
OpenRouter`openai/gpt-5-nano`	$0.05	$0.40	400K
OrcaRouter`openai/gpt-5-nano`	$0.05	$0.40	400K
Pioneer`gpt-5-nano`	$0.05	$0.40	400K
Prime Inference`openai/gpt-5-nano`	$0.05	$0.40	400K
SAP AI Core`gpt-5-nano`	$0.05	$0.40	400K
Vercel AI Gateway`openai/gpt-5-nano`	$0.05	$0.40	400K
Cortecs`gpt-5-nano`	$0.06	$0.44	400K
Requesty`gpt-5-nano@eu`	$0.055	$0.44	200K
AI/ML API`openai/gpt-5-nano`	$0.065	$0.52	400K
Snowflake Cortex`openai-gpt-5-nano`	—	—	272K

From models.dev and Hugging Face, checked daily. Resellers’ listings can lag behind their price pages, so confirm with the provider before you commit.

Face off

Current text models from other labs at a similar output price.

GPT-5 Nano

GPT-5 Nano

How good is it?

Leaderboards

Benchmarks Epoch AI runs

Where to run it

API providers

Face off

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