OpenAI: GPT-5 Nano

by OpenAI

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.

Avg Score

79.5%

274 answers

Avg Latency

14.1s

36 runs

Pricing

$0.05

input

$0.40

output

per 1M tokens

Context

400K

tokens

Alternatives

Models with similar or better quality but different tradeoffs

Same Quality, Cheaper

Models with similar or better performance at a lower cost per token.

Model	Cost
Google: Gemini 2.0 Flash	-92%
DeepSeek: DeepSeek V3.2	-85%
Meta: Llama 4 Maverick	-83%
DeepSeek: DeepSeek V3 0324	-76%
Anthropic: Claude 3 Haiku	-76%

Same Quality, Faster

Models with similar or better performance but lower latency.

Model	Latency
Google: Gemini 2.0 Flash	-91%
Google: Gemini 2.5 Flash	-89%
Anthropic: Claude 3 Haiku	-88%
Google: Gemini 3 Flash Preview	-86%
Anthropic: Claude Haiku 4.5	-86%

Same Cost, Better

Models at a similar price point with higher benchmark scores.

Model	Score
Google: Gemini 3 Flash Preview	+11%
MoonshotAI: Kimi K2 Thinking	+2%
DeepSeek: DeepSeek V3.2 Speciale	+1%

Other Models from OpenAI

Compare performance with other models from the same creator

Model	Score	Latency	Cost/1M
OpenAI: GPT-5.2	87.1%	4.9s	$7.88
OpenAI: GPT-5.2 Pro	85.5%	18.4s	$94.50
OpenAI: GPT-5.2 Chat	85.0%	4.3s	$7.88
OpenAI: GPT-5 Mini	80.2%	9.0s	$1.13
OpenAI: gpt-oss-20b	73.9%	6.6s	$0.06
OpenAI: gpt-oss-120b	50.3%	12.0s	$0.11
OpenAI: GPT-5.1-Codex-Max	—	—	$5.63
OpenAI: GPT-5.1	—	—	$5.63
OpenAI: GPT-5.1 Chat	—	—	$5.63
OpenAI: GPT-5.1-Codex	—	—	$5.63
OpenAI: GPT-5.1-Codex-Mini	—	—	$1.13
OpenAI: gpt-oss-safeguard-20b	—	—	$0.19
OpenAI: GPT-5 Image Mini	—	—	$2.25
OpenAI: GPT-5 Image	—	—	$10.00
OpenAI: o3 Deep Research	—	—	$25.00
OpenAI: o4 Mini Deep Research	—	—	$5.00
OpenAI: GPT-5 Pro	—	—	$67.50
OpenAI: GPT-5 Codex	—	—	$5.63
OpenAI: GPT-4o Audio	—	—	$6.25
OpenAI: GPT-5 Chat	—	—	$5.63
OpenAI: GPT-5	—	—	$5.63
OpenAI: gpt-oss-120b	—	—	$0.0000
OpenAI: gpt-oss-120b	—	—	$0.11
OpenAI: gpt-oss-20b	—	—	$0.0000
OpenAI: o3 Pro	—	—	$50.00
OpenAI: Codex Mini	—	—	$3.75
OpenAI: o4 Mini High	—	—	$2.75
OpenAI: o3	—	—	$5.00
OpenAI: o4 Mini	—	—	$2.75
OpenAI: GPT-4.1	—	—	$5.00
OpenAI: GPT-4.1 Mini	—	—	$1.00
OpenAI: GPT-4.1 Nano	—	—	$0.25
OpenAI: o1-pro	—	—	$375.00
OpenAI: GPT-4o-mini Search Preview	—	—	$0.38
OpenAI: GPT-4o Search Preview	—	—	$6.25
OpenAI: o3 Mini High	—	—	$2.75
OpenAI: o3 Mini	—	—	$2.75
OpenAI: o1	—	—	$37.50
OpenAI: GPT-4o (2024-11-20)	—	—	$6.25
OpenAI: ChatGPT-4o	—	—	$10.00
OpenAI: GPT-4o (2024-08-06)	—	—	$6.25
OpenAI: GPT-4o-mini (2024-07-18)	—	—	$0.38
OpenAI: GPT-4o-mini	—	—	$0.38
OpenAI: GPT-4o (2024-05-13)	—	—	$10.00
OpenAI: GPT-4o	—	—	$6.25
OpenAI: GPT-4o	—	—	$12.00
OpenAI: GPT-4 Turbo	—	—	$20.00
OpenAI: GPT-3.5 Turbo (older v0613)	—	—	$1.50
OpenAI: GPT-4 Turbo Preview	—	—	$20.00
OpenAI: GPT-4 Turbo (older v1106)	—	—	$20.00
OpenAI: GPT-3.5 Turbo Instruct	—	—	$1.75
OpenAI: GPT-3.5 Turbo 16k	—	—	$3.50
OpenAI: GPT-4 (older v0314)	—	—	$45.00
OpenAI: GPT-4	—	—	$45.00
OpenAI: GPT-3.5 Turbo	—	—	$1.00

Benchmark Performance

How this model performs across different benchmarks

Benchmark	Score	Rank
moose	100.0%	2 / 17
Math Bench: Subtraction (1-10)	100.0%	4 / 35
Math Bench: Arithmetic (1-100)	100.0%	2 / 35
Product Recommendations	100.0%	1 / 17
Customer service	100.0%	2 / 17
Math Bench: Division (1-10)	100.0%	2 / 35
Testing_website	100.0%	3 / 17
Venture Capital Terms Benchmark	100.0%	2 / 25
Best bathroom technique	100.0%	2 / 17
Breakfast	100.0%	2 / 17
Repetitive Onomatopoeia Response Benchmark	100.0%	2 / 17
Math Bench: Addition (1-10)	100.0%	4 / 35
Customer support	100.0%	2 / 17
Cheeky_test	100.0%	2 / 17
Motor production test	100.0%	14 / 36
Customer Support Ticket Generation	100.0%	2 / 17
Math Bench: Multiplication (1-10)	100.0%	3 / 35
Smell test	100.0%	2 / 17
Math Bench: Arithmetic (1-1000)	100.0%	3 / 35
Define data taxonomy for product catalog suitable for PIM	95.0%	9 / 17
KUKA force Torque control programming skills	95.0%	4 / 17
Structured Customer Support Extraction	95.0%	15 / 17
Spatial Reasoning: Germany	90.9%	19 / 35
Enhancing FIDO UV Consistency with UXWG 2026 priority plan	90.0%	15 / 23
SaaS Customer Support Extraction and Strategy	90.0%	15 / 17
Character Frequency Bench	83.3%	19 / 35
solve n-queens in clojure in one shot	80.0%	9 / 17
Karlsruhe Local Knowledge Benchmark	73.7%	23 / 35
Product Recommendations	62.5%	26 / 36
Rust performance	60.0%	4 / 16
Money Boy Cultural Literacy Test	20.0%	24 / 35
German Memelord Bench	12.1%	22 / 35
Current Global Political Leaders	0.0%	14 / 17
Karl Lorey knowlege	0.0%	28 / 36

Price vs Performance

Compare cost efficiency across all models

Current model

Other models

X-axis uses log scale for better visualization of price range

Score Over Time

Performance trends across all benchmark runs

Benchmark Activity

Number of benchmark runs over time

Quickstart

Get started with this model using OpenRouter

View on OpenRouter

import { OpenRouter } from "@openrouter/sdk";

const openrouter = new OpenRouter({
  apiKey: "<OPENROUTER_API_KEY>"
});

const completion = await openrouter.chat.completions.create({
  model: "openai/gpt-5-nano",
  messages: [
    {
      role: "user",
      content: "Hello!"
    }
  ]
});

console.log(completion.choices[0].message.content);

Get your API key at openrouter.ai/keys