Model Cost Profile

OpenAI: GPT-5 Nano

Developer: openai

Pricing updated Mar 11, 2026

Input rank: #55Output rank: #107

Live Pricing

Input: $0.0500

Output: $0.4000

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Pricing via OpenRouter API · Last synced Mar 11, 2026 · MMLU score via public benchmark data

OpenAI's GPT-5 Nano offers a substantial context window of 400,000 tokens, making it suitable for applications requiring extensive text analysis or generation, such as legal document review and long-form content creation. With an input price of $0.05 per million tokens and an output price of $0.40 per million tokens, teams can optimize their budgeting for projects that demand high-volume data processing. This model is particularly advantageous for organizations needing to handle large datasets efficiently while maintaining cost-effectiveness in their API usage.

👁 Vision🔧 Tool Calling📋 Structured Output🧠 Reasoning

Context Window

400,000

Tokens

Input Price / 1M

$0.0500

Prompt tokens

Output Price / 1M

$0.4000

Completion tokens

Intelligence (MMLU)

78.0

Massive Multitask Language Understanding

Benchmark Scores

Standardized evaluation scores for OpenAI: GPT-5 Nano.

Benchmark	Score	Rank	Source
GPQA	67.6	#49 of 118	artificial_analysis
MMLU	78.0	#48 of 121	artificial_analysis

Side-by-Side Pricing Table

Usage Type	Price / 1M Tokens
Input (Prompt)	$0.0500
Output (Completion)	$0.4000

Compare with OpenAI: gpt-oss-120b Compare with AllenAI: Olmo 2 32B Instruct Compare with Mistral: Mistral Small 3

Price History

OpenAI: GPT-5 Nano Pricing Trend

Input / 1M tokens0.0%Output / 1M tokens0.0%

Mar 7 — Mar 11

Current Input / 1M

$0.0500

Current Output / 1M

$0.4000

Cost Calculator

Estimate monthly spend for OpenAI: GPT-5 Nano based on your workload.

Input tokens / month

01.0B

Output tokens / month

0500M

Estimated Monthly Cost

$6.05

25M input + 12M output tokens

Same Workload on Other Models

Arcee AI: Trinity Large Preview (free)$0.00−$6.05 Arcee AI: Trinity Mini (free)$0.00−$6.05 Google: Gemma 3 12B (free)$0.00−$6.05 Google: Gemma 3 27B (free)$0.00−$6.05

Cheaper Alternatives to Compare

Quick links for cost-down decisions before production rollout.

OpenAI: GPT-5 Nano vs Arcee AI: Trinity Large Preview (free)OpenAI: GPT-5 Nano vs Arcee AI: Trinity Mini (free)OpenAI: GPT-5 Nano vs Google: Gemma 3 12B (free)OpenAI: GPT-5 Nano vs Google: Gemma 3 27B (free)

FAQ

Common pricing and benchmark questions for OpenAI: GPT-5 Nano.

How much does OpenAI: GPT-5 Nano cost per 1M input tokens?

OpenAI: GPT-5 Nano input pricing is $0.0500 per 1M tokens based on the latest synced provider data.

How much does OpenAI: GPT-5 Nano cost per 1M output tokens?

OpenAI: GPT-5 Nano output pricing is $0.4000 per 1M tokens based on the latest synced provider data.

What context window does OpenAI: GPT-5 Nano support?

OpenAI: GPT-5 Nano supports a context window of 400,000 tokens.

How can I compare OpenAI: GPT-5 Nano with cheaper alternatives?

Use the comparison links on this page to open direct model-vs-model pricing and benchmark pages, then evaluate monthly spend projections for your workload.