GPT-5 Nano API Pricing Calculator

Keep track of GPT-5 Nano pricing across platforms and ensure transparency for low-resource, budget-sensitive AI projects.

GPT-5 Nano is a legacy multimodal model from OpenAI, kept available since its release on 7 August 2025. It is due to be replaced by GPT-5.6 Luna on 11 December 2026. A 400,000-token context window feeds responses of up to 128,000 tokens. It costs between $0.025 and $0.05 per million input tokens, depending on service tier.

Last updated Oct 3, 2026

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Model Details

Released
Aug 7, 2025
Status
Legacysunset Dec 11, 2026
Context Length
400,000
Max Output
128,000
Superseded By
GPT-5.6 Luna

Where is GPT-5 Nano a perfect fit?

GPT-5 Nano is tailored for minimal-resource environments where cost and efficiency are critical. Ideal for lightweight AI solutions and micro-scale applications. Use cases include:
- Embedded systems or IoT devices
- Low-budget AI experiments or startups
- Quick-response bots with minimal overhead
- Mobile or edge computing AI integrations
- Projects requiring compact models with essential language capabilities

Quick Model Estimate

(USD 0.0500 per 1M tokens)
(USD 0.4000 per 1M tokens)

Your GPT-5 Nano Cost Estimate

💰 Total Cost

—

for 1000 input + 1000 output tokens

📥 Input (1000 × $0.050000) —
📤 Output (1000 × $0.400000) —

Cost Breakdown

📥 Input 📤 Output

Prices are watched for changes and checked against the provider's own page.

Pricing

Provider ↕
Modality ↕
Service Tier ↕
Input Price
(per 1M tokens) ↕
Output Price
(per 1M tokens) ↕
Cached Input
(per 1M tokens) ↕
Context Size ↕
View
OpenAI LogoOpenAITextStandard$0.0500$0.4000$0.0050400,000 tokens→
OpenAI LogoOpenAITextBatch$0.0250$0.2000$0.0025400,000 tokens→
OpenAI LogoOpenAITextFlex$0.0250$0.2000$0.0025400,000 tokens→

Recent changes

When GPT-5 Nano was newly listed on a provider, moved to legacy or deprecated, or retired.

  1. Legacy

    OpenAI moved GPT-5 Nano to legacy, retiring it on 11th Dec 2026, with GPT-5.6 Luna as the suggested replacement.

See all changes, new releases and retirements →

Other Models in the GPT-5 Family

GPT-5

Legacy

Multimodal · 400,000 context

GPT-5 Chat Latest

Deprecated

Chat · 128,000 context

GPT-5 Codex

Deprecated

Code · 400,000 context

GPT-5 Mini

Legacy

Multimodal · 400,000 context

GPT-5 Pro

Legacy

Multimodal · 400,000 context

GPT-5 Search API

Active

Search · 128,000 context

FAQs about GPT-5 Nano

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

GPT-5 Nano costs between $0.025 and $0.05 per million input tokens, and between $0.20 and $0.40 per million output tokens. The range covers Standard, Batch and Flex pricing.

What does a typical workload cost with GPT-5 Nano?

1,000 requests of 2,000 input and 500 output tokens each — 2,000,000 input and 500,000 output tokens in total — costs $0.15 with GPT-5 Nano at its lowest rates. Use the calculator on this page for your own volumes.

Where can I use GPT-5 Nano?

GPT-5 Nano is available through OpenAI, from $0.025 per million input tokens.

Is there cheaper GPT-5 Nano pricing than the standard rate?

Yes. Batch pricing for GPT-5 Nano starts at $0.025 per million input tokens against $0.05 on the standard tier, about 50% lower.

What is GPT-5 Nano's context window?

GPT-5 Nano has a context window of 400,000 tokens, and returns up to 128,000 tokens in a single response.

Is GPT-5 Nano still available?

GPT-5 Nano is a legacy model and is scheduled for retirement on 11 December 2026. The replacement is GPT-5.6 Luna.