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GPT-5 Nano API Pricing and Cost Calculator

Current OpenAI GPT-5 Nano API prices, latest update, quick estimate, price history, similar models, and a prefilled calculator path.

Use this model pricing page for the single-model question first: current input and output price, when it was updated, whether the source is traceable, what a reference workload costs, and where to calculate your own spend.

gpt-5-nano · text · active

Calculate Cost Open compare Provider pricing page Provider changes

GPT-5 Nano Calculator Card

Estimate Monthly Cost directly from this model page. Inputs update the result and the share link immediately.

Default expanded
Monthly Cost $144.60 1,000 requests per day · 1,000 input · 500 output · 30 days
Open full calculator

Current API pricing

If you searched GPT-5 Nano API pricing, start with the current stored prices below, then use Calculate Cost for workload-specific monthly spend.

Updated Jul 21, 22:05
Input price
$0.050 per 1M tokens
Output price
$0.400 per 1M tokens
Cached input
$0.0050 per 1M tokens
Blended price
$0.138 75 / 25 input-output mix
GPT-5 Nano API pricing answer GPT-5 Nano currently lists $0.050 input and $0.400 output per 1M tokens. Latest stored update: Jul 21, 22:05. Source: PricePerToken OpenAI.
Open compare Calculate Cost Provider pricing page Provider changes

Display currency

Current prices, reference costs, recent deltas, and history values switch to the selected display currency when FX is available.

Using USD display for price cards and history values.

Pricing context and trust

This block answers the context questions around the current price: where it came from, how fresh it is, whether history is still warming up, and whether cache or batch pricing is explicitly listed.

Latest snapshot Jul 21, 22:05 Most recent stored public pricing point for this model.
Source PricePerToken OpenAI Source page Keep the source link visible so the latest stored number stays manually verifiable.
Source mode Fallback source Verified fallback is in use because the preferred official page is not consistently crawlable right now.
History signal Usable signal Stored history is deep enough to use trend language with more confidence. 6 stored points across 113 days. 7d, 30d, and 90d windows are already ready. No tracked window is currently blocked by missing depth. The latest stored comparison already shows a sharp move input move.
Cached pricing $0.0050 Cached input pricing only appears when the source exposes it clearly.
Batch discount Not listed Shown only when a provider-listed batch price is normalized. Do not mix it with realtime pricing assumptions.

Change intelligence

This strip answers the practical questions: has this model moved, how meaningful was the move, is history deep enough, and which page should you open next.

Calculate Cost Open compare
Latest move Sharp move Input changed +100% on Jul 21, 22:05.
Stored history 6 points · 113 days Trend-ready. Stored history is deep enough to read short-term movement with more confidence.
Strongest window 7d change looks flat This window looks stable. Use the current price card and broader history depth to decide.
Recommended next step Run in calculator The latest stored move is an increase, so cost impact is the first question to answer.

Quick Estimate

2k input + 1k output, 20% cache hit, 300k requests / month

Calculate Cost
Single request estimate $0.0005
Monthly estimate $144.60
Batch discount Not listed
How to read this estimate The reference workload is a fast sanity check, not a forecast. If your prompt shape, cache ratio, or monthly traffic differs, jump to the calculator with this model preselected and adjust the assumptions there.

Similar Models

Open alternatives in compare or calculator with the same display currency before committing to this model.

Open compare
Cheaper cross-provider check Gemini 2.5 Flash-Lite Compare against another low-cost model before assuming GPT-5 Nano is the cheapest fit. Compare budget models
Calculator path Prefilled workload Estimate GPT-5 Nano first, then add alternatives after your token and traffic assumptions are set. Calculate Cost

Latest detected changes

Compared against the previous recorded snapshot for this model.

Jul 21, 22:05

Latest detected move: Input +100%. The latest stored move is an increase, so cost impact is the first question to answer.

Input price +100% Sharp move $0.025 -> $0.050 Delta +$0.025 Jul 20, 22:05 -> Jul 21, 22:05 1 days between stored points This move raises spend assumptions. Re-run your workload in the calculator before committing budget.
Output price +100% Sharp move $0.200 -> $0.400 Delta +$0.200 Jul 20, 22:05 -> Jul 21, 22:05 1 days between stored points This move raises spend assumptions. Re-run your workload in the calculator before committing budget.
Cached input price +100% Sharp move $0.0025 -> $0.0050 Delta +$0.0025 Jul 20, 22:05 -> Jul 21, 22:05 1 days between stored points This move raises spend assumptions. Re-run your workload in the calculator before committing budget.

Pricing history

Chronological snapshots captured from the active pricing source for this model.

6 points
Open glossary Data sources Export CSV

Stored history is deep enough to read short-term movement with more confidence.

7d change Jul 8, 22:05 -> Jul 21, 22:05
Input 0% Output 0% Cached 0%
8 stored points across 12 days This window looks stable. Use the current price card and broader history depth to decide.
30d change Jun 20, 22:05 -> Jul 21, 22:05
Input 0% Output 0% Cached 0%
24 stored points across 30 days This window looks stable. Use the current price card and broader history depth to decide.
90d change Apr 21, 22:05 -> Jul 21, 22:05
Input 0% Output 0% Cached 0%
64 stored points across 91 days This window looks stable. Use the current price card and broader history depth to decide.
Tracking span Mar 30, 12:00 -> Jul 21, 22:05 113 stored days covered by the visible history.
Latest detected change Input +100% Driven only by stored deltas, not guessed from one point.
History status Trend-ready Stored history is deep enough to read short-term movement with more confidence.
Input Output Cached

Shared scale across visible pricing lines. Use the table below for exact values.

Captured at Input / 1M Output / 1M Cached / 1M Source
Mar 30, 12:00 $0.050 $0.400 $0.0050 OpenAI
Jul 8, 22:05 $0.050 $0.400 $0.0050 PricePerToken OpenAI
Jul 16, 22:05 $0.025 $0.200 $0.0025 PricePerToken OpenAI
Jul 18, 22:05 $0.050 $0.400 $0.0050 PricePerToken OpenAI
Jul 20, 22:05 $0.025 $0.200 $0.0025 PricePerToken OpenAI
Jul 21, 22:05 $0.050 $0.400 $0.0050 PricePerToken OpenAI

Change log

Event timeline generated from stored snapshot deltas for this model.

8 events
GPT-5 Nano cached_input_price_per_million increased
cached_input_price_per_million changed from USD 0.0025 / 1M to USD 0.005 / 1M
Sharp move · Run in calculator
+100%
Jul 21, 22:05 $0.0025 -> $0.0050
GPT-5 Nano output_price_per_million increased
output_price_per_million changed from USD 0.2 / 1M to USD 0.4 / 1M
Sharp move · Run in calculator
+100%
Jul 21, 22:05 $0.200 -> $0.400
GPT-5 Nano input_price_per_million increased
input_price_per_million changed from USD 0.025 / 1M to USD 0.05 / 1M
Sharp move · Run in calculator
+100%
Jul 21, 22:05 $0.025 -> $0.050
GPT-5 Nano cached_input_price_per_million decreased
cached_input_price_per_million changed from USD 0.005 / 1M to USD 0.0025 / 1M
Sharp move · Open compare
-50%
Jul 19, 22:05 $0.0050 -> $0.0025
GPT-5 Nano output_price_per_million decreased
output_price_per_million changed from USD 0.4 / 1M to USD 0.2 / 1M
Sharp move · Open compare
-50%
Jul 19, 22:05 $0.400 -> $0.200
GPT-5 Nano input_price_per_million decreased
input_price_per_million changed from USD 0.05 / 1M to USD 0.025 / 1M
Sharp move · Open compare
-50%
Jul 19, 22:05 $0.050 -> $0.025
GPT-5 Nano cached_input_price_per_million increased
cached_input_price_per_million changed from USD 0.0025 / 1M to USD 0.005 / 1M
Sharp move · Run in calculator
+100%
Jul 17, 22:05 $0.0025 -> $0.0050
GPT-5 Nano output_price_per_million increased
output_price_per_million changed from USD 0.2 / 1M to USD 0.4 / 1M
Sharp move · Run in calculator
+100%
Jul 17, 22:05 $0.200 -> $0.400

Source and limits

Source PricePerToken OpenAI PricePerToken OpenAI
Recorded check Checked Jul 21, 22:05
Parser version pricepertoken-payload-v1
Context window 400000
Output limit 128000
Trust policy This page stays official-first whenever the provider page is crawlable. If not, verified fallback or baseline states stay explicit so the source trace never over-claims a live official crawl.
Source note Fallback snapshot from PricePerToken because OpenAI official pricing pages currently return an anti-bot challenge to server-side crawlers. Source updated at 2026-07-21T08:27:19.580574Z.

When this model detail is enough

Use this page when you need a single-model read: current price, source traceability, recent change strength, and enough stored history to judge whether the latest move is actionable.

When to escalate to compare

If a recent price cut or a stable multi-point window makes this model newly competitive, move to compare so every candidate runs against the same workload assumptions.

When to escalate to calculator

If a recent price increase changes spend assumptions or history is still thin, use calculator next so you can replace the reference workload with your own traffic, cache ratio, and budget ceiling.

GPT-5 Nano API pricing FAQ

Short answers for cost, monthly estimates, user-scale planning, and cheaper alternatives.

Site FAQ
How much does GPT-5 Nano cost? Current price

GPT-5 Nano currently costs $0.050 per 1M input tokens and $0.400 per 1M output tokens in the latest stored snapshot.

What is the monthly cost for GPT-5 Nano? Quick Estimate

The built-in quick estimate uses 2k input + 1k output, 20% cache hit, 300k requests / month and returns $144.60 per month. Use Calculate Cost to adjust token counts, request volume, cache ratio, batch mode, and budget.

Can GPT-5 Nano support 100 users? Workload fit

A 100-user estimate depends on how many requests each user sends and how large the prompts and responses are. This page lists context window and output limit; the calculator link is prefilled with GPT-5 Nano so you can model real traffic.

Is there a cheaper alternative to GPT-5 Nano? Similar Models

Use the Similar Models section above to open a shortlist in compare, then move to calculator once your workload assumptions are set. The page does not guess a winner from price alone because cached input, output mix, and batch mode can change the result.